title
Java Classes | Java Tutorial for Beginners | Java Classes and Objects | Java Training | Edureka

description
🔥 Java Training - https://www.edureka.co/java-j2ee-training-course This Edureka 'Java Classes' tutorial video (Java Blog Series: https://goo.gl/12JH8n) will take you through in-depth details of Java classes and different key-components in Java. It is ideal for both beginners and professionals who want to learn or brush up the basics of Java. Below are the topics covered in this tutorial: 1:16 Classes in Java 7:23 Constructors 13:04 Structure of a Class 14:14 Overview of Objects 15:16 Working with Objects 18:30 Multiple classes 21:39 OOPS concepts: Inheritance, Encapsulation, Abstraction, Interface #Java #Javaclasses #Javatutorial #Javaonlinetraining #Javaforbeginners How it Works? 1. This is a 7 Week Instructor led Online Course, 45 hours of assignment and 20 hours of project work 2. We have a 24x7 One-on-One LIVE Technical Support to help you with any problems you might face or any clarifications you may require during the course. 3. At the end of the training you will be working on a real time project for which we will provide you a Grade and a Verifiable Certificate! - - - - - - - - - - - - - - - - - About the Course Edureka's Advanced Java J2EE and SOA training and certification course is designed for students and professionals who want to be a Java Developer. This is a 42 hour course which will cover both core and advanced Java concepts like Database connectivity, Threads, Exception Handling, Collections, JSP, Servlets, XML Handling etc. We will also learn various Java frameworks like Hibernate and Spring. During our Java/ Certification training, our instructors will help you: 1. Develop the code with various Java data types, conditions and loops. 2. Implement arrays, functions and string handling techniques. 3. Understand object oriented programming through Java using Classes, Objects and various Java concepts like Abstract, Final etc. 4. Implement multi-threading and exception handling. 5. Use parse XML files using DOM and SAX in Java. 6. Write a code in JDBC to communicate with Database. 7. Develop web applications and JSP pages. 8. Interact with the database using hibernate framework. 9. Write code with spring framework components like Dependency Injection and Auto Wiring. 10. Implement SOA using web services. - - - - - - - - - - - - - - - - - - - Who should go for this course? This course is designed for professionals aspiring to become Java Developers. Programmers, Web Developers, Web Designers, Programming Hobbyists, Database Administrators, Youngsters who want to kick start their career are the key beneficiaries of this course. - - - - - - - - - - - - - - - - Why learn Java? Java is a general-purpose, class-based, object-oriented computer programming language that was designed by James Gosling at Sun Microsystems in 1995. Key Highlights of Java: Platform Independent: This allows programmers to develop applications that can run on any operating system. Usability of Java: Java is most widely used programming language. It is present everywhere. It really doesn't matter which domain you are working in, you will surely come across Java sooner or later! Open Source: The good news is that Java is available for free! All the development tools and the environment (JRE & JDK) that is used to develop Java applications are absolutely free of cost. Android: Irrespective of the fact that you are tech savvy or not, most of us are badly bitten by the Android bug! Android is in great demand today and fortunately you need Java for Android development. Hence, the importance of Java has increased even more. Hadoop: Hadoop is one of the most trending framework for processing Big Data. It has been designed and developed in Java. In spite of having a tough competition on the server side from Microsoft and other companies, Java is doing extremely well on mobile platforms, thanks to Android! It has also been the primary language for Hadoop Developers. For Java Training and Certification, please write back to us at sales@edureka.co or call us at IND: 9606058406 / US: 18338555775 (toll free). Facebook: https://www.facebook.com/edurekaIN/ Twitter: https://twitter.com/edurekain LinkedIn: https://www.linkedin.com/company/edureka

detail
{'title': 'Java Classes | Java Tutorial for Beginners | Java Classes and Objects | Java Training | Edureka', 'heatmap': [{'end': 367.628, 'start': 296.444, 'weight': 0.962}, {'end': 958.999, 'start': 909.364, 'weight': 1}, {'end': 1304.647, 'start': 1272.654, 'weight': 0.733}], 'summary': 'This java tutorial covers java classes, objects, constructors, inheritance, encapsulation, abstraction, interfaces, and practical implementations, providing a comprehensive understanding of java programming with real-life examples and syntax explanations.', 'chapters': [{'end': 249.693, 'segs': [{'end': 102.589, 'src': 'embed', 'start': 20.757, 'weight': 0, 'content': [{'end': 25.503, 'text': 'After that, we will be learning about constructors and how they play a major role in a class.', 'start': 20.757, 'duration': 4.746}, {'end': 32.049, 'text': 'Moving on, we will see the structure of a class, where I will be summarizing the above two concepts with a programmatical example.', 'start': 25.503, 'duration': 6.546}, {'end': 38.357, 'text': 'Next, we will see another key concept in a class, that is, objects, and how can you work with them, How can you create them,', 'start': 32.049, 'duration': 6.308}, {'end': 40.3, 'text': 'access them and play around with objects?', 'start': 38.357, 'duration': 1.943}, {'end': 42.599, 'text': 'Towards the later half of the session,', 'start': 41.118, 'duration': 1.481}, {'end': 49.965, 'text': "we'll be going through slightly advanced concepts where I'll be talking about multiple classes and object-oriented concepts such as inheritance,", 'start': 42.599, 'duration': 7.366}, {'end': 53.387, 'text': 'abstraction, encapsulation and how can you work with them.', 'start': 49.965, 'duration': 3.422}, {'end': 60.352, 'text': 'So are we all clear with the agenda? Kindly give me a quick confirmation by writing down in the chat box so that I can proceed.', 'start': 54.148, 'duration': 6.204}, {'end': 63.615, 'text': "Okay, so I'm getting confirmations.", 'start': 62.133, 'duration': 1.482}, {'end': 65.976, 'text': 'So Tyler says it looks fine.', 'start': 64.515, 'duration': 1.461}, {'end': 67.678, 'text': 'Anamika says a yes.', 'start': 66.617, 'duration': 1.061}, {'end': 69.399, 'text': 'Sameer says go ahead.', 'start': 68.418, 'duration': 0.981}, {'end': 71.759, 'text': 'All right, so we are good to go.', 'start': 70.518, 'duration': 1.241}, {'end': 76.402, 'text': 'Topic is getting an introduction to a class, or what is a class?', 'start': 71.779, 'duration': 4.623}, {'end': 82.285, 'text': 'So class in Java is a blueprint which includes all your data that is present around you.', 'start': 77.803, 'duration': 4.482}, {'end': 89.37, 'text': "Now if I have to give you an idea of what a class is, let's see this real life example of a car that we see in day to day life.", 'start': 82.986, 'duration': 6.384}, {'end': 92.452, 'text': 'Now, have you ever thought of how a car is created??', 'start': 90.23, 'duration': 2.222}, {'end': 97.346, 'text': 'At first you need a design wherein you can put all the functionalities to it.', 'start': 93.263, 'duration': 4.083}, {'end': 102.589, 'text': 'So, for example, you must know where a tyre should be or a steering wheel is placed in a car.', 'start': 97.346, 'duration': 5.243}], 'summary': 'Learning about classes, constructors, objects, and advanced concepts like inheritance and encapsulation in java programming.', 'duration': 81.832, 'max_score': 20.757, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk420757.jpg'}, {'end': 186.493, 'src': 'embed', 'start': 123.157, 'weight': 2, 'content': [{'end': 125.598, 'text': 'so you might be wondering what an object is.', 'start': 123.157, 'duration': 2.441}, {'end': 129.578, 'text': "so don't worry, guys, we will be learning the whole concept of objects in a while.", 'start': 125.598, 'duration': 3.98}, {'end': 135.32, 'text': 'but here, to give you a quick overview of an object, an object, basically, is everything you see around.', 'start': 129.578, 'duration': 5.742}, {'end': 141.021, 'text': 'for example, dog is an object of animal class, or you can say i am an object of human class.', 'start': 135.32, 'duration': 5.701}, {'end': 144.922, 'text': 'similarly, they can be different objects to the same car class.', 'start': 141.021, 'duration': 3.901}, {'end': 147.203, 'text': 'now moving towards the syntax of a class.', 'start': 144.922, 'duration': 2.281}, {'end': 149.223, 'text': 'or how can you define a class in a java code?', 'start': 147.203, 'duration': 2.02}, {'end': 153.168, 'text': 'So a class logically groups our data and functions together.', 'start': 149.966, 'duration': 3.202}, {'end': 157.431, 'text': 'So if we go in technical term, these are called as variables and methods.', 'start': 153.768, 'duration': 3.663}, {'end': 165.936, 'text': 'So we learn about these things in detail, but if I have to relate to the same example here, my variable here are color, model, and price.', 'start': 158.131, 'duration': 7.805}, {'end': 169.298, 'text': 'So variable is nothing but an attribute of a class.', 'start': 166.537, 'duration': 2.761}, {'end': 171.34, 'text': 'Then we talk about method.', 'start': 170.219, 'duration': 1.121}, {'end': 174.082, 'text': 'They are just the functionality of a given class.', 'start': 171.88, 'duration': 2.202}, {'end': 177.204, 'text': 'Here the main function to make a car move is speed.', 'start': 174.642, 'duration': 2.562}, {'end': 179.285, 'text': 'So I declare a method speedup.', 'start': 177.844, 'duration': 1.441}, {'end': 186.493, 'text': "Similarly, you need to gear up whenever you speed up a car, So if you don't do, you will end up killing up your engine.", 'start': 179.969, 'duration': 6.524}], 'summary': 'Objects are everything around us, like a dog in the animal class or a car in the car class. classes group data and functions, such as variables like color, model, and price, and methods like speedup for functionality.', 'duration': 63.336, 'max_score': 123.157, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk4123157.jpg'}], 'start': 0.029, 'title': 'Java classes and syntax', 'summary': 'Introduces java classes, covering constructors, objects, and advanced concepts like inheritance, abstraction, and encapsulation. it explains the concept of classes and objects using a real-life example of a car and discusses the syntax and structure of a java class, including variables and methods with examples.', 'chapters': [{'end': 82.285, 'start': 0.029, 'title': 'Java classes introduction', 'summary': 'Introduces java classes, covering topics such as constructors, objects, and advanced concepts like inheritance, abstraction, and encapsulation, with a brief overview of the agenda and participant confirmations.', 'duration': 82.256, 'highlights': ['The session covers Java class basics, including constructors, objects, and advanced concepts like inheritance, abstraction, and encapsulation.', 'The agenda includes discussions on the components of a class, constructors, class structure, objects, and advanced object-oriented concepts.', 'Participant confirmations were received from Tyler, Anamika, and Sameer before proceeding with the session introduction.']}, {'end': 144.922, 'start': 82.986, 'title': 'Understanding classes and objects', 'summary': 'Explains the concept of classes and objects using a real-life example of a car, emphasizing how a class provides structure and minimizes redundancy, while objects represent real-world entities and instances of a class.', 'duration': 61.936, 'highlights': ['A class provides structure and minimizes redundancy by enabling the design of functionalities, such as the placement of tires and steering wheel in a car.', 'Objects represent real-world entities and instances of a class, for example, a dog being an object of the animal class and a person being an object of the human class.', 'The chapter also introduces the concept of objects, which will be covered in detail later.']}, {'end': 249.693, 'start': 144.922, 'title': 'Java class syntax and structure', 'summary': 'Discusses the syntax and structure of a java class, explaining the concept of variables and methods, using a car class as an example, and then delving into the details of variables as data storage units with examples of color, model, and price.', 'duration': 104.771, 'highlights': ['A class logically groups data and functions together, represented by variables and methods. Explains that a class logically groups data and functions together, represented by variables and methods.', 'Variables like color, model, and price are attributes of a class, used to store data values. Illustrates that variables like color, model, and price are attributes of a class, used to store data values with examples of different car attributes.', "Methods in a class are the functionalities, exemplified by the 'speedup' method for car movement. Describes methods in a class as functionalities, exemplified by the 'speedup' method for car movement."]}], 'duration': 249.664, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk429.jpg', 'highlights': ['The session covers Java class basics, including constructors, objects, and advanced concepts like inheritance, abstraction, and encapsulation.', 'A class provides structure and minimizes redundancy by enabling the design of functionalities, such as the placement of tires and steering wheel in a car.', 'Variables like color, model, and price are attributes of a class, used to store data values.', 'The agenda includes discussions on the components of a class, constructors, class structure, objects, and advanced object-oriented concepts.', 'Objects represent real-world entities and instances of a class, for example, a dog being an object of the animal class and a person being an object of the human class.', 'Participant confirmations were received from Tyler, Anamika, and Sameer before proceeding with the session introduction.', 'A class logically groups data and functions together, represented by variables and methods. Explains that a class logically groups data and functions together, represented by variables and methods.', "Methods in a class are the functionalities, exemplified by the 'speedup' method for car movement. Describes methods in a class as functionalities, exemplified by the 'speedup' method for car movement.", 'The chapter also introduces the concept of objects, which will be covered in detail later.']}, {'end': 920.088, 'segs': [{'end': 280.007, 'src': 'embed', 'start': 250.653, 'weight': 1, 'content': [{'end': 255.934, 'text': 'Now coming back to the slide, a member variable is a variable that belongs to a specific class.', 'start': 250.653, 'duration': 5.281}, {'end': 261.976, 'text': 'So these memory variable are classified into three types, local, instance, and a class variable.', 'start': 256.555, 'duration': 5.421}, {'end': 265.51, 'text': "So let's see what exactly they are and how they are used.", 'start': 262.967, 'duration': 2.543}, {'end': 270.616, 'text': 'So local variable is a variable that can be accessed within a function.', 'start': 266.952, 'duration': 3.664}, {'end': 274.04, 'text': 'So in this variable, scope remains still a function.', 'start': 271.257, 'duration': 2.783}, {'end': 280.007, 'text': 'So just to remind you guys, a function is again a set of rules that you wish to operate with the different values.', 'start': 274.62, 'duration': 5.387}], 'summary': 'Explaining types of member variables: local, instance, and class variables within a class.', 'duration': 29.354, 'max_score': 250.653, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk4250653.jpg'}, {'end': 345.251, 'src': 'embed', 'start': 296.444, 'weight': 0, 'content': [{'end': 298.946, 'text': 'It shares only one copy that is taken by everyone.', 'start': 296.444, 'duration': 2.502}, {'end': 301.93, 'text': 'So let us see how we can implement them practically.', 'start': 299.587, 'duration': 2.343}, {'end': 306.825, 'text': 'So this is my car class which has some variable and methods to it.', 'start': 303.584, 'duration': 3.241}, {'end': 310.906, 'text': 'Now a local variable is a variable that is declared within a method.', 'start': 307.505, 'duration': 3.401}, {'end': 316.887, 'text': "So I created a method called as display where I've passed an argument as m.", 'start': 311.546, 'duration': 5.341}, {'end': 321.868, 'text': 'Now my local variable is model here which has a value m associated to it.', 'start': 316.887, 'duration': 4.981}, {'end': 324.248, 'text': "And here I've just printed this value.", 'start': 322.428, 'duration': 1.82}, {'end': 327.349, 'text': 'Then second I have instance variable.', 'start': 325.009, 'duration': 2.34}, {'end': 331.57, 'text': 'Now these variables are declared outside any class, constructor or anything.', 'start': 327.809, 'duration': 3.761}, {'end': 337.066, 'text': 'So in this case color is my instance variable which has a value black to it.', 'start': 332.543, 'duration': 4.523}, {'end': 341.729, 'text': 'Third is my static variable which has one copy which is shared by all.', 'start': 337.926, 'duration': 3.803}, {'end': 345.251, 'text': 'So in my example all cars are having 4 tires right.', 'start': 342.169, 'duration': 3.082}], 'summary': 'Demonstration of different types of variables in a car class, including local, instance, and static variables, with 4 tires shared by all cars.', 'duration': 48.807, 'max_score': 296.444, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk4296444.jpg'}, {'end': 367.628, 'src': 'heatmap', 'start': 296.444, 'weight': 0.962, 'content': [{'end': 298.946, 'text': 'It shares only one copy that is taken by everyone.', 'start': 296.444, 'duration': 2.502}, {'end': 301.93, 'text': 'So let us see how we can implement them practically.', 'start': 299.587, 'duration': 2.343}, {'end': 306.825, 'text': 'So this is my car class which has some variable and methods to it.', 'start': 303.584, 'duration': 3.241}, {'end': 310.906, 'text': 'Now a local variable is a variable that is declared within a method.', 'start': 307.505, 'duration': 3.401}, {'end': 316.887, 'text': "So I created a method called as display where I've passed an argument as m.", 'start': 311.546, 'duration': 5.341}, {'end': 321.868, 'text': 'Now my local variable is model here which has a value m associated to it.', 'start': 316.887, 'duration': 4.981}, {'end': 324.248, 'text': "And here I've just printed this value.", 'start': 322.428, 'duration': 1.82}, {'end': 327.349, 'text': 'Then second I have instance variable.', 'start': 325.009, 'duration': 2.34}, {'end': 331.57, 'text': 'Now these variables are declared outside any class, constructor or anything.', 'start': 327.809, 'duration': 3.761}, {'end': 337.066, 'text': 'So in this case color is my instance variable which has a value black to it.', 'start': 332.543, 'duration': 4.523}, {'end': 341.729, 'text': 'Third is my static variable which has one copy which is shared by all.', 'start': 337.926, 'duration': 3.803}, {'end': 345.251, 'text': 'So in my example all cars are having 4 tires right.', 'start': 342.169, 'duration': 3.082}, {'end': 349.393, 'text': 'So I have declared a static variable that is tire which has a value 4.', 'start': 345.551, 'duration': 3.842}, {'end': 352.735, 'text': 'So I hope you guys are clear with different types of variable.', 'start': 349.393, 'duration': 3.342}, {'end': 360.52, 'text': "Let's see how a variable is initialized in a method or how can you create your own method and put in different functionalities to it.", 'start': 353.476, 'duration': 7.044}, {'end': 367.628, 'text': 'So as we discussed earlier, methods basically is a set of rules or operations that describes the behavior.', 'start': 361.923, 'duration': 5.705}], 'summary': 'The transcript explains different types of variables in a car class, including local, instance, and static variables, with specific examples and explanations.', 'duration': 71.184, 'max_score': 296.444, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk4296444.jpg'}, {'end': 433.922, 'src': 'embed', 'start': 407.028, 'weight': 2, 'content': [{'end': 411.63, 'text': 'So this is how you can overcome the problem and use methods instead of writing it again and again.', 'start': 407.028, 'duration': 4.602}, {'end': 417.173, 'text': 'So Tyler asked me how does methods affect the performance of a program?', 'start': 413.311, 'duration': 3.862}, {'end': 425.157, 'text': 'So, as I just discussed, Tyler, methods are used to reduce the code redundancy or you can just reduce the complexity in your program.', 'start': 418.234, 'duration': 6.923}, {'end': 430.04, 'text': 'Because the good part of method here is you can send in different values to the same function.', 'start': 425.718, 'duration': 4.322}, {'end': 433.922, 'text': "So don't be confused because the methods and functions are same.", 'start': 430.64, 'duration': 3.282}], 'summary': 'Using methods reduces code redundancy and complexity, improving program performance.', 'duration': 26.894, 'max_score': 407.028, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk4407028.jpg'}, {'end': 501.357, 'src': 'embed', 'start': 471.563, 'weight': 6, 'content': [{'end': 473.625, 'text': "So let's see how these constructors are classified.", 'start': 471.563, 'duration': 2.062}, {'end': 478.971, 'text': 'Majorly there are two types of constructor, default constructor and parameterized constructor.', 'start': 474.306, 'duration': 4.665}, {'end': 480.993, 'text': "So let's know more about them.", 'start': 479.732, 'duration': 1.261}, {'end': 486.879, 'text': "So default constructor is something that is created automatically when you don't create a constructor.", 'start': 482.054, 'duration': 4.825}, {'end': 490.012, 'text': "So here you don't pass any argument to it.", 'start': 487.731, 'duration': 2.281}, {'end': 492.993, 'text': 'Also it is further classified into two types.', 'start': 490.792, 'duration': 2.201}, {'end': 496.655, 'text': 'The one which is automatically created and the other is user defined.', 'start': 493.213, 'duration': 3.442}, {'end': 501.357, 'text': 'Whereas in a parametrized constructor is where you pass parameters to a constructor.', 'start': 496.975, 'duration': 4.382}], 'summary': 'Two main types of constructors: default (automatically created) and parameterized (user defined).', 'duration': 29.794, 'max_score': 471.563, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk4471563.jpg'}, {'end': 660.624, 'src': 'embed', 'start': 631.811, 'weight': 4, 'content': [{'end': 636.214, 'text': "So, to understand that, let's talk about the next topic, that is, an access specifier.", 'start': 631.811, 'duration': 4.403}, {'end': 638.216, 'text': 'Public is an access specifier.', 'start': 636.735, 'duration': 1.481}, {'end': 642.393, 'text': 'Similarly, we have three more, private, protected and default.', 'start': 638.951, 'duration': 3.442}, {'end': 647.356, 'text': "So I'll give you a simple understanding of what these are and why they're important and useful for us.", 'start': 642.893, 'duration': 4.463}, {'end': 650.398, 'text': 'So my first specifier is public.', 'start': 648.697, 'duration': 1.701}, {'end': 654.14, 'text': 'So public as the name says, it is accessible from everywhere.', 'start': 651.058, 'duration': 3.082}, {'end': 660.624, 'text': 'So if you declare a class, method or a variable as public, these can be accessed from any other class or package.', 'start': 654.54, 'duration': 6.084}], 'summary': 'Public is an access specifier in java, accessible from everywhere.', 'duration': 28.813, 'max_score': 631.811, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk4631811.jpg'}, {'end': 884.444, 'src': 'embed', 'start': 855.421, 'weight': 3, 'content': [{'end': 859.344, 'text': 'So an object basically is a child entity that has a state and a behavior.', 'start': 855.421, 'duration': 3.923}, {'end': 862.867, 'text': 'By state, what do we mean? Basically it refers to a variable.', 'start': 859.885, 'duration': 2.982}, {'end': 864.868, 'text': "And by behavior, it's your method.", 'start': 863.327, 'duration': 1.541}, {'end': 875.637, 'text': 'Now, if we take the same example of a car where this is just a blueprint and this is actually an object of a car where each state variable has a corresponding value to it.', 'start': 865.549, 'duration': 10.088}, {'end': 881.441, 'text': 'So where we see color, model, and price earlier, now we have seen objects that has a value.', 'start': 876.277, 'duration': 5.164}, {'end': 884.444, 'text': 'Say, color of my car is orange.', 'start': 882.282, 'duration': 2.162}], 'summary': 'An object is a child entity with state (variables) and behavior (methods).', 'duration': 29.023, 'max_score': 855.421, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk4855421.jpg'}], 'start': 250.653, 'title': 'Class variables, methods, constructors & objects', 'summary': 'Covers class variables including local, instance, and class variables, along with their definitions, practical implementations, and examples. additionally, it discusses the significance of methods in reducing code redundancy, the role of constructors in object creation, and the concept of access specifiers. it also provides insights into objects and their state and behavior, with a focus on implementing them in java.', 'chapters': [{'end': 367.628, 'start': 250.653, 'title': 'Types of class variables', 'summary': 'Discusses the types of class variables - local, instance, and class variables - including their definitions and practical implementations, with examples of their usage and associated values.', 'duration': 116.975, 'highlights': ['The chapter emphasizes the distinction between local, instance, and class variables, explaining their definitions and specific use cases, such as local variables being accessible within a function and instance variables being unique to instances.', 'The practical implementation of these variables is demonstrated through examples, such as creating a car class with specific variables and methods, showcasing the initialization and usage of local, instance, and static variables.', 'An example is provided to illustrate the use of static variables, with the specific instance of all cars having 4 tires, effectively demonstrating the shared nature of class variables.']}, {'end': 920.088, 'start': 368.449, 'title': 'Methods, constructors & objects', 'summary': 'Discusses the importance of using methods to reduce code redundancy and complexity, the role of constructors in object creation, and the concept of access specifiers. it also provides a brief understanding of objects and their state and behavior, with a focus on implementing them in java.', 'duration': 551.639, 'highlights': ['The chapter discusses the importance of using methods to reduce code redundancy and complexity. Methods are used to reduce code redundancy and complexity in a program, allowing different values to be sent to the same function.', 'The role of constructors in object creation is explained, with a focus on default and parameterized constructors. Constructors are used to create objects, and they can be classified as default (automatically created when no constructor is defined) and parameterized (where parameters are passed to the constructor).', 'The concept of access specifiers is introduced, including public, private, protected, and default modifiers, and their respective scopes are explained. Access specifiers such as public, private, protected, and default are discussed, with explanations of their scopes and accessibility within classes and packages.', 'The concept of objects and their state and behavior is introduced, highlighting the implementation of objects in Java. Objects are described as entities with state (variables) and behavior (methods), and their implementation in Java is emphasized.']}], 'duration': 669.435, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk4250653.jpg', 'highlights': ['The practical implementation of these variables is demonstrated through examples, such as creating a car class with specific variables and methods, showcasing the initialization and usage of local, instance, and static variables.', 'The chapter emphasizes the distinction between local, instance, and class variables, explaining their definitions and specific use cases, such as local variables being accessible within a function and instance variables being unique to instances.', 'The chapter discusses the importance of using methods to reduce code redundancy and complexity. Methods are used to reduce code redundancy and complexity in a program, allowing different values to be sent to the same function.', 'The concept of objects and their state and behavior is introduced, highlighting the implementation of objects in Java. Objects are described as entities with state (variables) and behavior (methods), and their implementation in Java is emphasized.', 'The concept of access specifiers is introduced, including public, private, protected, and default modifiers, and their respective scopes are explained. Access specifiers such as public, private, protected, and default are discussed, with explanations of their scopes and accessibility within classes and packages.', 'An example is provided to illustrate the use of static variables, with the specific instance of all cars having 4 tires, effectively demonstrating the shared nature of class variables.', 'The role of constructors in object creation is explained, with a focus on default and parameterized constructors. Constructors are used to create objects, and they can be classified as default (automatically created when no constructor is defined) and parameterized (where parameters are passed to the constructor).']}, {'end': 1467.442, 'segs': [{'end': 945.951, 'src': 'embed', 'start': 920.088, 'weight': 0, 'content': [{'end': 924.45, 'text': 'you have your declaration, instantiation and initialization.', 'start': 920.088, 'duration': 4.362}, {'end': 928.673, 'text': 'so this is basically a syntax of how you can create a new object.', 'start': 924.45, 'duration': 4.223}, {'end': 930.854, 'text': 'so you use a new keyword.', 'start': 928.673, 'duration': 2.181}, {'end': 936.758, 'text': "now you've already seen this, so let me go back and explain you what each part of syntax is for.", 'start': 930.854, 'duration': 5.904}, {'end': 940.36, 'text': 'so this is my class name, that is, student, followed by the object name.', 'start': 936.758, 'duration': 3.602}, {'end': 945.951, 'text': 'Then there is this new keyword, which basically allocates the memory for the object.', 'start': 941.328, 'duration': 4.623}], 'summary': "Syntax for creating a new object with class name 'student' and new keyword allocating memory.", 'duration': 25.863, 'max_score': 920.088, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk4920088.jpg'}, {'end': 1039.387, 'src': 'embed', 'start': 1013.348, 'weight': 1, 'content': [{'end': 1020.354, 'text': 'Now it has an ID as a parameter so let me put an ID say to and a name that can be.', 'start': 1013.348, 'duration': 7.006}, {'end': 1024.157, 'text': 'So this is how you can pass values to a method.', 'start': 1021.976, 'duration': 2.181}, {'end': 1029.042, 'text': 'Then the third way of initializing is calling by a reference variable.', 'start': 1025.742, 'duration': 3.3}, {'end': 1034.845, 'text': 'Now what it is? Now what we have done is actually passed the value to a constructor or a method.', 'start': 1029.583, 'duration': 5.262}, {'end': 1039.387, 'text': 'But how about creating an object or you can say a reference variable to access them.', 'start': 1035.365, 'duration': 4.022}], 'summary': 'The transcript discusses ways of passing values to a method and initializing by a reference variable.', 'duration': 26.039, 'max_score': 1013.348, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk41013348.jpg'}, {'end': 1143.685, 'src': 'embed', 'start': 1116.713, 'weight': 2, 'content': [{'end': 1121.095, 'text': 'Now just take this to higher level where we understand how to work with multiple classes.', 'start': 1116.713, 'duration': 4.382}, {'end': 1127.417, 'text': 'Now you may be wondering why do we need these multiple classes? So no Java code is written with just a single class.', 'start': 1121.735, 'duration': 5.682}, {'end': 1132.839, 'text': "And when you're looking at real time project, you may be having thousands of classes as part of your code.", 'start': 1128.098, 'duration': 4.741}, {'end': 1136.081, 'text': "So what we'll be doing today, we'll work with two classes.", 'start': 1133.46, 'duration': 2.621}, {'end': 1143.685, 'text': 'So this is just a reference to understand where I have created two classes, which contains a constructor and a method in both of them.', 'start': 1136.943, 'duration': 6.742}], 'summary': 'Understanding the necessity of multiple classes in java, as real projects may consist of thousands of classes; practicing with two classes, each containing a constructor and a method.', 'duration': 26.972, 'max_score': 1116.713, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk41116713.jpg'}, {'end': 1318.117, 'src': 'heatmap', 'start': 1272.654, 'weight': 3, 'content': [{'end': 1278.617, 'text': "so the first thing that I've called is the constructor of class A, that is, this is a constructor of class A.", 'start': 1272.654, 'duration': 5.963}, {'end': 1281.258, 'text': "then I've called a constructor of class B.", 'start': 1278.617, 'duration': 2.641}, {'end': 1283.339, 'text': 'this is the constructor of class B.', 'start': 1281.258, 'duration': 2.081}, {'end': 1287.641, 'text': "then again I've called the method of class B, which says this is the method of class B.", 'start': 1283.339, 'duration': 4.302}, {'end': 1289.637, 'text': 'So I hope you guys are clear.', 'start': 1288.496, 'duration': 1.141}, {'end': 1291.758, 'text': 'with multiple classes and how do they work?', 'start': 1289.637, 'duration': 2.121}, {'end': 1296.402, 'text': 'So again the output I have just shown in my IDE.', 'start': 1293.56, 'duration': 2.842}, {'end': 1304.647, 'text': "So now let us focus on oops concepts, where I'll be talking about inheritance, abstraction,", 'start': 1299.884, 'duration': 4.763}, {'end': 1308.35, 'text': 'encapsulation and how can you achieve them using a class in Java.', 'start': 1304.647, 'duration': 3.703}, {'end': 1311.552, 'text': 'So the very first topic is inheritance.', 'start': 1309.391, 'duration': 2.161}, {'end': 1314.634, 'text': 'So all of you must be familiar with inheritance.', 'start': 1312.493, 'duration': 2.141}, {'end': 1318.117, 'text': 'So it basically inherits the properties which can be further used.', 'start': 1315.135, 'duration': 2.982}], 'summary': 'The transcript covers java class constructors, methods, and oop concepts like inheritance, encapsulation, and abstraction.', 'duration': 24.557, 'max_score': 1272.654, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk41272654.jpg'}, {'end': 1366.686, 'src': 'embed', 'start': 1338.469, 'weight': 4, 'content': [{'end': 1340.311, 'text': 'or you can say derived class or subclass.', 'start': 1338.469, 'duration': 1.842}, {'end': 1342.812, 'text': 'So these are just the different names to call a class.', 'start': 1340.711, 'duration': 2.101}, {'end': 1348.577, 'text': 'Then we have several types of inheritance such as single, multiple, hierarchical and hybrid.', 'start': 1343.793, 'duration': 4.784}, {'end': 1350.772, 'text': "So let's learn about them one by one.", 'start': 1349.13, 'duration': 1.642}, {'end': 1354.475, 'text': 'So my first type of inheritance is single inheritance.', 'start': 1352.073, 'duration': 2.402}, {'end': 1359.379, 'text': 'So this is the easiest type where a single child inherits the property of a parent class.', 'start': 1354.875, 'duration': 4.504}, {'end': 1366.686, 'text': 'Now how can you inherit them? So in Java we use this keyword as extend which is used for inheriting the properties of other.', 'start': 1360.02, 'duration': 6.666}], 'summary': 'Inheritance in java includes single, multiple, hierarchical, and hybrid types.', 'duration': 28.217, 'max_score': 1338.469, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk41338469.jpg'}], 'start': 920.088, 'title': 'Java object initialization, multiple classes, and inheritance', 'summary': 'Covers object initialization in java, including constructors, methods, and reference variables. it also explains working with multiple classes, demonstrating their creation and interaction, and delves into inheritance, covering its concept, types, and syntax in java.', 'chapters': [{'end': 1094.752, 'start': 920.088, 'title': 'Object initialization in java', 'summary': 'Explains the syntax and methods for initializing objects in java, including the use of constructors, methods, and reference variables, with examples and output.', 'duration': 174.664, 'highlights': ['The chapter explains the syntax for creating a new object in Java using the declaration, instantiation, and initialization process, including the use of the new keyword and constructors with examples.', 'It details three ways to initialize an object in Java: using constructors, methods, and reference variables, with specific examples and explanations for each method.', 'The chapter includes examples demonstrating the process of passing values to a method using an object, showcasing the concept of object initialization and usage in Java.']}, {'end': 1467.442, 'start': 1094.752, 'title': 'Working with multiple classes and inheritance in java', 'summary': 'Discusses working with multiple classes in java, explaining the need for multiple classes and demonstrating the creation and interaction of two classes. it then delves into the topic of inheritance, explaining the concept, types of inheritance, and their syntax in java.', 'duration': 372.69, 'highlights': ['The chapter discusses working with multiple classes in Java, explaining the need for multiple classes and demonstrating the creation and interaction of two classes. The chapter explains the need for multiple classes in Java, stating that real-time projects may involve thousands of classes, and demonstrates the creation and interaction of two classes.', 'It then delves into the topic of inheritance, explaining the concept, types of inheritance, and their syntax in Java. The chapter provides an explanation of inheritance, detailing the concept, types of inheritance (single, multi-level, hierarchical), and their respective syntax in Java.', 'Class B and class C are siblings, or child classes, which are inheriting the properties of class A. The explanation of hierarchical inheritance highlights that class B and class C are sibling classes inheriting the properties of class A.', "In Java, a class acquires the property of another using the 'extend' keyword. The usage of the 'extend' keyword in Java for inheriting properties is emphasized as a key point in the explanation of inheritance."]}], 'duration': 547.354, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk4920088.jpg', 'highlights': ['The chapter explains the syntax for creating a new object in Java using the declaration, instantiation, and initialization process, including the use of the new keyword and constructors with examples.', 'The chapter includes examples demonstrating the process of passing values to a method using an object, showcasing the concept of object initialization and usage in Java.', 'The chapter discusses working with multiple classes in Java, explaining the need for multiple classes and demonstrating the creation and interaction of two classes.', 'It then delves into the topic of inheritance, explaining the concept, types of inheritance, and their syntax in Java.', 'The chapter provides an explanation of inheritance, detailing the concept, types of inheritance (single, multi-level, hierarchical), and their respective syntax in Java.']}, {'end': 1660.207, 'segs': [{'end': 1583.236, 'src': 'embed', 'start': 1482.472, 'weight': 0, 'content': [{'end': 1488.237, 'text': 'now, if you have learned about multiple inheritance, you might be having many doubts, but to help you here with respect to these inheritance,', 'start': 1482.472, 'duration': 5.765}, {'end': 1491.279, 'text': 'hybrid is a combination of single and multiple inheritance.', 'start': 1488.237, 'duration': 3.042}, {'end': 1494.866, 'text': 'So in Java, as you know, multiple inheritance is not supported.', 'start': 1492.145, 'duration': 2.721}, {'end': 1501.73, 'text': 'As you must be aware of diamond problem, where the two subclasses were inheriting the same properties of the parent class,', 'start': 1495.767, 'duration': 5.963}, {'end': 1505.431, 'text': "which has leading back to ambiguity, and that is why Java doesn't support it.", 'start': 1501.73, 'duration': 3.701}, {'end': 1508.973, 'text': 'But here you can achieve this hybrid inheritance using an interface.', 'start': 1505.832, 'duration': 3.141}, {'end': 1511.054, 'text': 'Now interface play a major role here.', 'start': 1509.413, 'duration': 1.641}, {'end': 1518.898, 'text': "So we'll be learning about interface in a while where I'll be explaining what exactly is interfaces and how it is useful to achieve this type of inheritance.", 'start': 1511.594, 'duration': 7.304}, {'end': 1522.674, 'text': 'Then my next object-on-it concept is encapsulation.', 'start': 1520.051, 'duration': 2.623}, {'end': 1528.8, 'text': 'So encapsulation in Java is a mechanism of wrapping up the data and code together as a single unit.', 'start': 1523.274, 'duration': 5.526}, {'end': 1533.625, 'text': 'So here if you see methods, variable, all are binded together in a single class.', 'start': 1529.581, 'duration': 4.044}, {'end': 1535.635, 'text': 'so encapsulation.', 'start': 1534.554, 'duration': 1.081}, {'end': 1544.2, 'text': 'it also provides the functionality where the variables of a class can be hidden from another class and which can be accessed only through the members of the current class.', 'start': 1535.635, 'duration': 8.565}, {'end': 1546.461, 'text': 'but now the question is how can you do that?', 'start': 1544.2, 'duration': 2.261}, {'end': 1549.323, 'text': 'so, to achieve encapsulation, there are two methods.', 'start': 1546.461, 'duration': 2.862}, {'end': 1556.908, 'text': "the first is where you can declare the variables of a class as private so you've already seen this where you can declare your variable as private.", 'start': 1549.323, 'duration': 7.585}, {'end': 1562.491, 'text': 'well, the second method is where you can provide setter and getter methods to modify and see the values of the variables.', 'start': 1556.908, 'duration': 5.583}, {'end': 1567.91, 'text': "So let's see the second method, where we can create a getter and setter method to access these values.", 'start': 1563.308, 'duration': 4.602}, {'end': 1572.272, 'text': "So here if you see the code, I've created a class employee.", 'start': 1569.03, 'duration': 3.242}, {'end': 1575.373, 'text': 'Now this class has a private variable that is name.', 'start': 1572.792, 'duration': 2.581}, {'end': 1579.574, 'text': 'So this is the first case where we have used the private access modifier.', 'start': 1576.093, 'duration': 3.481}, {'end': 1583.236, 'text': 'Then we have created a getter method which takes the name of the employee.', 'start': 1580.355, 'duration': 2.881}], 'summary': 'In java, hybrid inheritance is achieved through interfaces. encapsulation involves wrapping data and code, and hiding variables from other classes.', 'duration': 100.764, 'max_score': 1482.472, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk41482472.jpg'}], 'start': 1467.442, 'title': 'Java inheritance and encapsulation', 'summary': "Discusses java's approach to inheritance and encapsulation, emphasizing the use of interfaces to achieve hybrid inheritance, and the mechanism of encapsulation in java, including the declaration of private variables and creation of getter and setter methods.", 'chapters': [{'end': 1522.674, 'start': 1467.442, 'title': 'Java inheritance and encapsulation', 'summary': "Discusses java's approach to inheritance, highlighting its avoidance of multiple inheritance due to the diamond problem, and the use of interfaces to achieve hybrid inheritance, emphasizing the role of encapsulation in simplifying java's complexity.", 'duration': 55.232, 'highlights': ['Java avoids multiple inheritance due to the diamond problem Java does not support multiple inheritance to avoid the diamond problem, which can lead to ambiguity and complexity.', 'Hybrid inheritance can be achieved using interfaces Hybrid inheritance, a combination of single and multiple inheritance, can be achieved in Java using interfaces to address the limitations of multiple inheritance.', "Encapsulation simplifies Java's complexity Encapsulation is emphasized as a concept that simplifies Java's complexity and aligns with the language's objective of being simple and easy for everyone."]}, {'end': 1660.207, 'start': 1523.274, 'title': 'Encapsulation in java', 'summary': 'Explains encapsulation in java, highlighting the mechanism of wrapping up data and code, declaring variables as private, and creating getter and setter methods to access and modify variable values, to achieve encapsulation.', 'duration': 136.933, 'highlights': ['The chapter highlights the mechanism of encapsulation in Java, emphasizing the wrapping up of data and code as a single unit within a class, providing functionality to hide variables from other classes and allowing access only through the current class.', "The second highlighted point explains the methods to achieve encapsulation, focusing on declaring variables as private and creating getter and setter methods to modify and access variable values, showcasing the practical implementation through a class named 'employee'.", "The detailed highlight demonstrates the practical implementation of creating getter and setter methods in Java, showcasing the process of generating these methods automatically using the IDE, with specific examples of getter and setter methods for the 'name' variable within the 'employee' class."]}], 'duration': 192.765, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk41467442.jpg', 'highlights': ['Hybrid inheritance can be achieved using interfaces', 'Java avoids multiple inheritance due to the diamond problem', "Encapsulation simplifies Java's complexity", 'The chapter highlights the mechanism of encapsulation in Java', 'The second highlighted point explains the methods to achieve encapsulation', 'The detailed highlight demonstrates the practical implementation of creating getter and setter methods in Java']}, {'end': 2270.924, 'segs': [{'end': 1692.28, 'src': 'embed', 'start': 1661.127, 'weight': 6, 'content': [{'end': 1662.088, 'text': 'Sameer says go ahead.', 'start': 1661.127, 'duration': 0.961}, {'end': 1663.488, 'text': 'All right guys.', 'start': 1662.908, 'duration': 0.58}, {'end': 1667.31, 'text': "Okay so now let's move on to another concept that is abstraction.", 'start': 1664.149, 'duration': 3.161}, {'end': 1672.543, 'text': 'Now abstraction is basically the quality of dealing with ideas rather than events.', 'start': 1668.479, 'duration': 4.064}, {'end': 1679.369, 'text': 'So for example, when you consider the case of this car, here the mechanic is repairing a certain function that is present in the car.', 'start': 1673.043, 'duration': 6.326}, {'end': 1683.012, 'text': "But the user, or you can say driver, doesn't want to know about these things.", 'start': 1679.849, 'duration': 3.163}, {'end': 1685.755, 'text': 'He just want that his car gets repaired fast.', 'start': 1683.513, 'duration': 2.242}, {'end': 1692.28, 'text': 'So in these types, you can basically segregate the implementation and show the other person what he actually wants to see.', 'start': 1686.435, 'duration': 5.845}], 'summary': "Abstraction deals with ideas rather than events, like car repair for the user's convenience.", 'duration': 31.153, 'max_score': 1661.127, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk41661127.jpg'}, {'end': 1730.057, 'src': 'embed', 'start': 1700.906, 'weight': 5, 'content': [{'end': 1704.669, 'text': 'so abstract class is a class which has the abstract keyword to it.', 'start': 1700.906, 'duration': 3.763}, {'end': 1712.194, 'text': 'so here in these classes, you cannot instantiate or you cannot create an object to them, so it may or may not contain abstract methods.', 'start': 1704.669, 'duration': 7.525}, {'end': 1714.495, 'text': 'now, what exactly an abstract method is?', 'start': 1712.194, 'duration': 2.301}, {'end': 1716.717, 'text': 'so an abstract method is a method without a body.', 'start': 1714.495, 'duration': 2.222}, {'end': 1722.654, 'text': 'So here, if you can see, this is my syntax, where abstract is my keyword, followed by the name of the class.', 'start': 1717.432, 'duration': 5.222}, {'end': 1730.057, 'text': 'So also you have to keep in mind that if a class has at least one abstract method then the class must be declared as abstract.', 'start': 1723.754, 'duration': 6.303}], 'summary': 'Abstract class cannot be instantiated, may contain abstract methods without body. class must be declared abstract if it has at least one abstract method.', 'duration': 29.151, 'max_score': 1700.906, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk41700906.jpg'}, {'end': 1802.815, 'src': 'embed', 'start': 1757.62, 'weight': 1, 'content': [{'end': 1764.137, 'text': 'So is it relatable to big or do you want me to repeat that slide again? Okay, so he says he got it.', 'start': 1757.62, 'duration': 6.517}, {'end': 1765.617, 'text': "All right, that's great.", 'start': 1764.837, 'duration': 0.78}, {'end': 1768.619, 'text': 'Now coming to my last topic, that is interface.', 'start': 1766.498, 'duration': 2.121}, {'end': 1771.74, 'text': 'So interface in Java is a blueprint of a class.', 'start': 1769.239, 'duration': 2.501}, {'end': 1776.482, 'text': 'Or you can say it is a collection of abstract methods, constant and everything else around.', 'start': 1772.28, 'duration': 4.202}, {'end': 1780.824, 'text': 'So in an interface, each method is public and abstract by default.', 'start': 1777.043, 'duration': 3.781}, {'end': 1783.626, 'text': 'Also, it does not contain any constructor.', 'start': 1781.565, 'duration': 2.061}, {'end': 1786.565, 'text': 'So let us see how you can declare an interface.', 'start': 1784.522, 'duration': 2.043}, {'end': 1789.831, 'text': "Here if you can see, I've created an interface as car.", 'start': 1787.106, 'duration': 2.725}, {'end': 1794.639, 'text': "So let's say we have three methods here, change gear, speed up, and apply brakes.", 'start': 1790.752, 'duration': 3.887}, {'end': 1800.393, 'text': "So all my car have these functionalities, right? But how they work they're going to be different.", 'start': 1795.36, 'duration': 5.033}, {'end': 1802.815, 'text': "Let's say you're working with a manual car.", 'start': 1801.174, 'duration': 1.641}], 'summary': 'Introduction to java interfaces, including its definition and characteristics.', 'duration': 45.195, 'max_score': 1757.62, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk41757620.jpg'}, {'end': 2232.439, 'src': 'embed', 'start': 2206.086, 'weight': 0, 'content': [{'end': 2210.829, 'text': 'Then we saw a structure of a class where I summarized the previous topic with a programmatical example.', 'start': 2206.086, 'duration': 4.743}, {'end': 2214.331, 'text': 'Then we talked about objects and how can you work with them.', 'start': 2211.89, 'duration': 2.441}, {'end': 2219.115, 'text': 'And finally we talked about oops concept and how you can implement them in Java.', 'start': 2215.152, 'duration': 3.963}, {'end': 2222.637, 'text': 'So I hope you guys find this session useful.', 'start': 2220.796, 'duration': 1.841}, {'end': 2228.358, 'text': "So, any kinds of question or doubts you're facing in any of the concept that I've talked about in this session,", 'start': 2223.077, 'duration': 5.281}, {'end': 2232.439, 'text': 'you can just write it down in your chat box or probably connect with me in my next session.', 'start': 2228.358, 'duration': 4.081}], 'summary': 'Covered class structure, objects, and oops concepts in java. encouraged questions and feedback.', 'duration': 26.353, 'max_score': 2206.086, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk42206086.jpg'}], 'start': 1661.127, 'title': 'Java abstraction and interfaces', 'summary': 'Discusses abstraction in java, focusing on abstract classes and interfaces. it explains the qualities and usage of abstract classes, including the syntax and the use of abstract methods, and then delves into the concept of interfaces as blueprints of classes with public and abstract methods by default. additionally, it explains how to declare, implement, and utilize interfaces with practical examples, showcasing the functionality and logic variation in different subclasses. the entire java session is summarized at the end.', 'chapters': [{'end': 1780.824, 'start': 1661.127, 'title': 'Abstraction in java: abstract classes and interfaces', 'summary': 'Discusses the concept of abstraction in java, focusing on abstract classes and interfaces. it explains the qualities and usage of abstract classes, including the syntax and the use of abstract methods, and then delves into the concept of interfaces as blueprints of classes with public and abstract methods by default.', 'duration': 119.697, 'highlights': ['The chapter discusses the concept of abstraction in Java Sameer introduces the concept of abstraction and its application in Java, focusing on abstract classes and interfaces.', 'Explanation of abstract classes, including syntax and usage of abstract methods Sameer explains abstract classes as those with the abstract keyword, highlighting that they cannot be instantiated and may contain abstract methods. He also emphasizes the necessity to inherit or provide implementations for abstract methods.', 'Introduction to interfaces as blueprints of classes with public and abstract methods by default The discussion covers interfaces in Java, defining them as a collection of abstract methods and constants, with each method being public and abstract by default.']}, {'end': 2270.924, 'start': 1781.565, 'title': 'Understanding java interfaces', 'summary': 'Explains the concept of java interfaces, demonstrating how to declare, implement, and utilize interfaces with practical examples, showcasing the functionality and logic variation in different subclasses, and concluding with a summary of the entire java session.', 'duration': 489.359, 'highlights': ['The chapter explains the concept of Java interfaces It provides a thorough explanation of Java interfaces, demonstrating the usage and implementation of interfaces in Java programming.', 'Demonstrating how to declare, implement, and utilize interfaces with practical examples The chapter illustrates the process of declaring, implementing, and utilizing interfaces through practical examples using car functionalities and different car subclasses.', 'Showcasing the functionality and logic variation in different subclasses It showcases how the functionality and logic vary in different subclasses, such as manual and automatic cars, and how the interface allows for common functionalities with varying logic.', 'Concluding with a summary of the entire Java session The chapter concludes with a summary of the entire Java session, covering topics such as Java classes, constructors, access modifiers, class structure, working with objects, OOP concepts, and invites questions from the audience.']}], 'duration': 609.797, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/cXj1hHdMNk4/pics/cXj1hHdMNk41661127.jpg', 'highlights': ['The chapter concludes with a summary of the entire Java session, covering topics such as Java classes, constructors, access modifiers, class structure, working with objects, OOP concepts, and invites questions from the audience.', 'It showcases how the functionality and logic vary in different subclasses, such as manual and automatic cars, and how the interface allows for common functionalities with varying logic.', 'The chapter explains the concept of Java interfaces It provides a thorough explanation of Java interfaces, demonstrating the usage and implementation of interfaces in Java programming.', 'Demonstrating how to declare, implement, and utilize interfaces with practical examples The chapter illustrates the process of declaring, implementing, and utilizing interfaces through practical examples using car functionalities and different car subclasses.', 'Introduction to interfaces as blueprints of classes with public and abstract methods by default The discussion covers interfaces in Java, defining them as a collection of abstract methods and constants, with each method being public and abstract by default.', 'Explanation of abstract classes, including syntax and usage of abstract methods Sameer explains abstract classes as those with the abstract keyword, highlighting that they cannot be instantiated and may contain abstract methods. He also emphasizes the necessity to inherit or provide implementations for abstract methods.', 'The chapter discusses the concept of abstraction in Java Sameer introduces the concept of abstraction and its application in Java, focusing on abstract classes and interfaces.']}], 'highlights': ['The chapter concludes with a summary of the entire Java session, covering topics such as Java classes, constructors, access modifiers, class structure, working with objects, OOP concepts, and invites questions from the audience.', 'The chapter explains the concept of Java interfaces It provides a thorough explanation of Java interfaces, demonstrating the usage and implementation of interfaces in Java programming.', 'The chapter discusses the concept of abstraction in Java Sameer introduces the concept of abstraction and its application in Java, focusing on abstract classes and interfaces.', 'The chapter discusses the importance of using methods to reduce code redundancy and complexity. Methods are used to reduce code redundancy and complexity in a program, allowing different values to be sent to the same function.', 'The chapter emphasizes the distinction between local, instance, and class variables, explaining their definitions and specific use cases, such as local variables being accessible within a function and instance variables being unique to instances.', 'The chapter explains the syntax for creating a new object in Java using the declaration, instantiation, and initialization process, including the use of the new keyword and constructors with examples.', 'The chapter includes examples demonstrating the process of passing values to a method using an object, showcasing the concept of object initialization and usage in Java.', 'The chapter discusses working with multiple classes in Java, explaining the need for multiple classes and demonstrating the creation and interaction of two classes.', 'It then delves into the topic of inheritance, explaining the concept, types of inheritance, and their syntax in Java.', 'The chapter provides an explanation of inheritance, detailing the concept, types of inheritance (single, multi-level, hierarchical), and their respective syntax in Java.', 'Hybrid inheritance can be achieved using interfaces', 'Java avoids multiple inheritance due to the diamond problem', "Encapsulation simplifies Java's complexity", 'The chapter highlights the mechanism of encapsulation in Java', 'The second highlighted point explains the methods to achieve encapsulation', 'The detailed highlight demonstrates the practical implementation of creating getter and setter methods in Java', 'The practical implementation of these variables is demonstrated through examples, such as creating a car class with specific variables and methods, showcasing the initialization and usage of local, instance, and static variables.', 'An example is provided to illustrate the use of static variables, with the specific instance of all cars having 4 tires, effectively demonstrating the shared nature of class variables.', 'The role of constructors in object creation is explained, with a focus on default and parameterized constructors. Constructors are used to create objects, and they can be classified as default (automatically created when no constructor is defined) and parameterized (where parameters are passed to the constructor).', 'The concept of objects and their state and behavior is introduced, highlighting the implementation of objects in Java. Objects are described as entities with state (variables) and behavior (methods), and their implementation in Java is emphasized.', 'The concept of access specifiers is introduced, including public, private, protected, and default modifiers, and their respective scopes are explained. Access specifiers such as public, private, protected, and default are discussed, with explanations of their scopes and accessibility within classes and packages.', 'The session covers Java class basics, including constructors, objects, and advanced concepts like inheritance, abstraction, and encapsulation.', 'A class provides structure and minimizes redundancy by enabling the design of functionalities, such as the placement of tires and steering wheel in a car.', 'Variables like color, model, and price are attributes of a class, used to store data values.', 'The agenda includes discussions on the components of a class, constructors, class structure, objects, and advanced object-oriented concepts.', 'Objects represent real-world entities and instances of a class, for example, a dog being an object of the animal class and a person being an object of the human class.', 'Participant confirmations were received from Tyler, Anamika, and Sameer before proceeding with the session introduction.', 'A class logically groups data and functions together, represented by variables and methods. Explains that a class logically groups data and functions together, represented by variables and methods.', "Methods in a class are the functionalities, exemplified by the 'speedup' method for car movement. Describes methods in a class as functionalities, exemplified by the 'speedup' method for car movement.", 'The chapter also introduces the concept of objects, which will be covered in detail later.']}