title
Composite Design Pattern

description
Get the Code: http://goo.gl/X3Kxc Welcome to my Composite Design Pattern Tutorial! The Composite design pattern is used to structure data into its individual parts as well as represent the inner workings of every part of a larger object. The composite pattern also allows you to treat both groups of parts in the same way as you treat the parts polymorphically. This allows your objects to maximize complexity while also remaining dynamic.

detail
{'title': 'Composite Design Pattern', 'heatmap': [{'end': 84.96, 'start': 44.051, 'weight': 0.9}, {'end': 252.939, 'start': 239.946, 'weight': 0.747}, {'end': 326.761, 'start': 293.08, 'weight': 0.788}, {'end': 444.463, 'start': 430.333, 'weight': 0.712}, {'end': 464.014, 'start': 452.669, 'weight': 0.744}, {'end': 587.54, 'start': 565.158, 'weight': 0.812}, {'end': 716.77, 'start': 682.182, 'weight': 0.716}, {'end': 760.782, 'start': 728.592, 'weight': 0.833}, {'end': 984.235, 'start': 948.132, 'weight': 0.737}], 'summary': 'Covers the composite design pattern, explaining its role in representing part-whole hierarchies and structuring data of a whole object individually. it demonstrates the implementation in eclipse, defining song components and groups, implementing composite pattern, and organizing music content for industrial bands like heavy metal and dubstep.', 'chapters': [{'end': 213.653, 'segs': [{'end': 84.96, 'src': 'heatmap', 'start': 0.109, 'weight': 0, 'content': [{'end': 4.312, 'text': 'Hello Internet and welcome to part 18 of my design patterns video tutorial.', 'start': 0.109, 'duration': 4.203}, {'end': 7.233, 'text': "Today we're going to talk about the composite design pattern.", 'start': 4.372, 'duration': 2.861}, {'end': 10.375, 'text': 'Now, the composite design pattern is another one of those two patterns.', 'start': 7.373, 'duration': 3.002}, {'end': 16.239, 'text': 'that sounds really complicated whenever you read the definition of it, but once you see the code and you see it in pictures,', 'start': 10.375, 'duration': 5.864}, {'end': 17.92, 'text': 'it makes a hundred percent sense.', 'start': 16.239, 'duration': 1.681}, {'end': 21.461, 'text': "So either way, I'm going to go in and read the common definitions for it.", 'start': 18.18, 'duration': 3.281}, {'end': 25.983, 'text': 'It allows you to treat individual objects and compositions of objects uniformly.', 'start': 21.581, 'duration': 4.402}, {'end': 29.704, 'text': 'That is the typical definition for the composite design pattern.', 'start': 26.123, 'duration': 3.581}, {'end': 34.106, 'text': 'Then you have, they allow you to represent part-whole hierarchies.', 'start': 29.764, 'duration': 4.342}, {'end': 41.39, 'text': "What a part-whole hierarchy is simply is it's when components can further be divided into smaller and smaller components.", 'start': 34.406, 'duration': 6.984}, {'end': 44.051, 'text': 'And then a more logical definition is.', 'start': 41.59, 'duration': 2.461}, {'end': 51.816, 'text': 'the composite design pattern allows you to structure data or represent the inner working of every part of a whole object individually.', 'start': 44.051, 'duration': 7.765}, {'end': 54.177, 'text': "If you didn't quite get that, let's look at some pictures.", 'start': 51.996, 'duration': 2.181}, {'end': 59.099, 'text': "Okay, so in this demonstration I'm actually going to use exactly what you see here on the screen.", 'start': 54.637, 'duration': 4.462}, {'end': 60.659, 'text': "First you're going to have your component.", 'start': 59.199, 'duration': 1.46}, {'end': 65.681, 'text': "What this is going to be is an interface that's going to be inherited by the composite.", 'start': 60.739, 'duration': 4.942}, {'end': 72.604, 'text': 'And what the composite is going to hold in this situation are either going to be groups of songs or individual songs.', 'start': 65.921, 'duration': 6.683}, {'end': 76.589, 'text': 'And then you have your individual songs, which are going to be called leafs.', 'start': 72.924, 'duration': 3.665}, {'end': 82.517, 'text': 'The difference between a composite is a composite can contain, once again, songs or groups of songs.', 'start': 76.849, 'duration': 5.668}, {'end': 84.96, 'text': "Here's a song, and here's a group of songs.", 'start': 82.597, 'duration': 2.363}], 'summary': 'Part 18 discusses the composite design pattern, which allows treating individual objects and compositions uniformly, representing part-whole hierarchies.', 'duration': 54.068, 'max_score': 0.109, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0109.jpg'}, {'end': 173.917, 'src': 'embed', 'start': 130.637, 'weight': 3, 'content': [{'end': 132.618, 'text': 'To look at this in a more logical way.', 'start': 130.637, 'duration': 1.981}, {'end': 144.062, 'text': 'here is a song group which can either be made up of just songs or a song group that contains other song groups including songs or just songs,', 'start': 132.618, 'duration': 11.444}, {'end': 145.142, 'text': 'just like you have right here.', 'start': 144.062, 'duration': 1.08}, {'end': 147.764, 'text': "So that's an overview of the composite design pattern.", 'start': 145.302, 'duration': 2.462}, {'end': 151.205, 'text': "So let's get into the code and make it 100% understandable.", 'start': 147.784, 'duration': 3.421}, {'end': 157.548, 'text': "So here we are in Eclipse, and the first thing we're going to do is we're going to create songComponent.java.", 'start': 151.705, 'duration': 5.843}, {'end': 159.869, 'text': 'This is the component using the jargon.', 'start': 157.588, 'duration': 2.281}, {'end': 163.831, 'text': "And what we're going to do is create an abstract class.", 'start': 160.249, 'duration': 3.582}, {'end': 166.552, 'text': "And of course, we're going to call it songComponent.", 'start': 164.311, 'duration': 2.241}, {'end': 171.515, 'text': "component, and then we're going to define everything that we could ever use inside of this.", 'start': 166.852, 'duration': 4.663}, {'end': 173.917, 'text': 'of course, spell abstract right, alright.', 'start': 171.515, 'duration': 2.402}], 'summary': 'Overview of composite design pattern, creating songcomponent.java in eclipse.', 'duration': 43.28, 'max_score': 130.637, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0130637.jpg'}, {'end': 213.653, 'src': 'embed', 'start': 190.905, 'weight': 6, 'content': [{'end': 200.088, 'text': "And then, quite simply, what we're going to do here is we're going to throw an exception, unsupported operation exception,", 'start': 190.905, 'duration': 9.183}, {'end': 203.689, 'text': "which is a very common exception that you haven't seen until this point.", 'start': 200.088, 'duration': 3.601}, {'end': 213.653, 'text': "Basically, what this guy is saying here is that we're going to throw the unsupported operation exception if it doesn't make sense for a song or song group to inherit a method,", 'start': 203.849, 'duration': 9.804}], 'summary': 'Throw unsupported operation exception in certain cases', 'duration': 22.748, 'max_score': 190.905, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0190905.jpg'}], 'start': 0.109, 'title': 'Composite design pattern', 'summary': 'Discusses the composite design pattern, allowing uniform treatment of individual objects and compositions, representing part-whole hierarchies, and structuring data of a whole object individually. it provides an overview of the pattern, explaining component structure, inheritance, logic behind song groups and individual songs, and demonstrating implementation in eclipse.', 'chapters': [{'end': 54.177, 'start': 0.109, 'title': 'Composite design pattern', 'summary': 'Discusses the composite design pattern, which allows you to treat individual objects and compositions of objects uniformly, representing part-whole hierarchies and structuring data of a whole object individually.', 'duration': 54.068, 'highlights': ['The composite design pattern allows you to treat individual objects and compositions of objects uniformly, making it easier to manage complex hierarchies within the software system.', 'It enables the representation of part-whole hierarchies, where components can be further divided into smaller and smaller components, aiding in the organization and structuring of data.', 'The pattern facilitates the structuring of data or representation of the inner workings of every part of a whole object individually, providing clarity and ease of management.']}, {'end': 213.653, 'start': 54.637, 'title': 'Composite design pattern overview', 'summary': 'Provides an overview of the composite design pattern, explaining the structure of components, inheritance, and the logic behind song groups and individual songs, as well as demonstrating the implementation in eclipse.', 'duration': 159.016, 'highlights': ['The composite design pattern overview Explains the structure of components, inheritance, and the logic behind song groups and individual songs.', 'Demonstration in Eclipse Demonstrates the implementation of the composite design pattern in Eclipse.', 'Definition of songComponent Defines an abstract class called songComponent to encompass song and song group functionalities.', "Unsupported operation exception Introduces the concept of throwing an unsupported operation exception to handle cases where it doesn't make sense for a song or song group to inherit a method."]}], 'duration': 213.544, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0109.jpg', 'highlights': ['The composite design pattern allows you to treat individual objects and compositions of objects uniformly, making it easier to manage complex hierarchies within the software system.', 'It enables the representation of part-whole hierarchies, where components can be further divided into smaller and smaller components, aiding in the organization and structuring of data.', 'The pattern facilitates the structuring of data or representation of the inner workings of every part of a whole object individually, providing clarity and ease of management.', 'The composite design pattern overview Explains the structure of components, inheritance, and the logic behind song groups and individual songs.', 'Demonstration in Eclipse Demonstrates the implementation of the composite design pattern in Eclipse.', 'Definition of songComponent Defines an abstract class called songComponent to encompass song and song group functionalities.', "Unsupported operation exception Introduces the concept of throwing an unsupported operation exception to handle cases where it doesn't make sense for a song or song group to inherit a method."]}, {'end': 380.414, 'segs': [{'end': 239.726, 'src': 'embed', 'start': 213.653, 'weight': 3, 'content': [{'end': 218.634, 'text': "and in those situations in which it doesn't make sense, they're just going to inherit the default implementation.", 'start': 213.653, 'duration': 4.981}, {'end': 220.875, 'text': "you don't need to worry too much about what that means.", 'start': 218.634, 'duration': 2.241}, {'end': 222.936, 'text': "we're going to get more into that at a later date.", 'start': 220.875, 'duration': 2.061}, {'end': 230.438, 'text': "then another thing we're going to have to do is if we can add components, we may also need to remove components,", 'start': 222.936, 'duration': 7.502}, {'end': 235.541, 'text': "and basically what we're doing here is just defining all the different types of methods that we may need in the future.", 'start': 230.438, 'duration': 5.103}, {'end': 239.726, 'text': "And I'm going to throw void inside of there and void inside of here as well.", 'start': 235.782, 'duration': 3.944}], 'summary': 'Defining methods for adding and removing components, with details to be covered later.', 'duration': 26.073, 'max_score': 213.653, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0213653.jpg'}, {'end': 266.988, 'src': 'heatmap', 'start': 239.946, 'weight': 0.747, 'content': [{'end': 243.75, 'text': 'Another thing you might want to do here is get a component.', 'start': 239.946, 'duration': 3.804}, {'end': 249.937, 'text': 'And a component, like I said before, is going to be groups of songs as well as individual songs.', 'start': 243.93, 'duration': 6.007}, {'end': 252.939, 'text': "which we're going to define here in a second song component.", 'start': 250.257, 'duration': 2.682}, {'end': 258.882, 'text': 'we might also want to be able to get our components and you could say something like component index.', 'start': 252.939, 'duration': 5.943}, {'end': 260.644, 'text': "let's actually spell that out.", 'start': 258.882, 'duration': 1.762}, {'end': 266.988, 'text': 'and then something we are going to use is get name and this is of course going to be a string,', 'start': 260.644, 'duration': 6.344}], 'summary': 'Defining song components and their attributes for retrieval.', 'duration': 27.042, 'max_score': 239.946, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0239946.jpg'}, {'end': 302.624, 'src': 'embed', 'start': 273.571, 'weight': 2, 'content': [{'end': 281.055, 'text': "since we're going to be playing around with song names and band names, and we could also, like we did in the previous part of this tutorial,", 'start': 273.571, 'duration': 7.484}, {'end': 284.196, 'text': 'return the release year for this song.', 'start': 281.055, 'duration': 3.141}, {'end': 288.038, 'text': "basically, what we're doing is kind of like we did with the iterator design pattern.", 'start': 284.196, 'duration': 3.842}, {'end': 293.08, 'text': "we're going to be creating tools for a disc jockey to be able to pull information out in regards to songs,", 'start': 288.038, 'duration': 5.042}, {'end': 302.624, 'text': 'and then this final one here is very important, because this is going to be used to display song information as well as groups of song information.', 'start': 293.08, 'duration': 9.544}], 'summary': 'Developing tools for disc jockey to access song information and band names, including release years and display functionality.', 'duration': 29.053, 'max_score': 273.571, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0273571.jpg'}, {'end': 350.419, 'src': 'heatmap', 'start': 293.08, 'weight': 0, 'content': [{'end': 302.624, 'text': 'and then this final one here is very important, because this is going to be used to display song information as well as groups of song information.', 'start': 293.08, 'duration': 9.544}, {'end': 305.385, 'text': "And we're also going to throw that exception right there.", 'start': 302.984, 'duration': 2.401}, {'end': 311.888, 'text': 'Basically just defining all the things that might be used in everything that is going to extend this abstract class.', 'start': 305.525, 'duration': 6.363}, {'end': 319.995, 'text': "So now let's jump over into song group dot Java and start defining some groupings where we're going to be saving this information.", 'start': 312.168, 'duration': 7.827}, {'end': 326.761, 'text': "And I'm going to be using an array list because I said before all these songs are going to be stored in an array list.", 'start': 320.415, 'duration': 6.346}, {'end': 333.346, 'text': "And I'm going to cycle through songs using the iterator that we talked about in the last part of this tutorial.", 'start': 327.201, 'duration': 6.145}, {'end': 341.533, 'text': "And then we're going to go public class song group extends song component which we just created a second ago.", 'start': 333.566, 'duration': 7.967}, {'end': 350.419, 'text': "and then we're going to create our array list which is going to contain any songs or song groups are going to be added to any of the other songs or song groups,", 'start': 341.533, 'duration': 8.886}], 'summary': 'Defining song information and groups using array list and iterator in java.', 'duration': 38.251, 'max_score': 293.08, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0293080.jpg'}], 'start': 213.653, 'title': 'Song component definition and grouping', 'summary': 'Introduces the definition of song components and grouping, creating an abstract class with methods for adding, removing, and getting components, and defining song groups with array lists for storing songs and groups, providing names and descriptions.', 'chapters': [{'end': 380.414, 'start': 213.653, 'title': 'Song component definition and grouping', 'summary': 'Introduces the definition of song components and grouping by creating an abstract class with various methods such as adding, removing, and getting components, and extends the functionality by defining song groups with array lists for storing songs and groups, and providing group names and descriptions.', 'duration': 166.761, 'highlights': ['The chapter introduces the definition of song components and grouping by creating an abstract class with various methods such as adding, removing, and getting components, and extends the functionality by defining song groups with array lists for storing songs and groups, and providing group names and descriptions.', 'The tutorial emphasizes the use of array lists to store songs and song groups, enabling easy iteration and management of the stored information.', 'A key aspect involves defining methods for accessing and manipulating song information, such as retrieving song names, band names, and release year, for use by disc jockeys.', 'The chapter also covers the inheritance of default implementation when it does not make sense to override, providing a comprehensive overview of the design and functionality of the abstract class and its extensions.']}], 'duration': 166.761, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0213653.jpg', 'highlights': ['The chapter introduces the definition of song components and grouping with an abstract class and methods for adding, removing, and getting components.', 'The tutorial emphasizes the use of array lists to store songs and song groups, enabling easy iteration and management of the stored information.', 'Defining methods for accessing and manipulating song information, such as retrieving song names, band names, and release year, is a key aspect.', 'The chapter covers the inheritance of default implementation, providing a comprehensive overview of the design and functionality of the abstract class and its extensions.']}, {'end': 770.507, 'segs': [{'end': 472.197, 'src': 'heatmap', 'start': 452.669, 'weight': 0, 'content': [{'end': 460.853, 'text': "pretty simple, and even though i'm not going to get into it in this part of the tutorial, i'm going to allow you to remove individual song components.", 'start': 452.669, 'duration': 8.184}, {'end': 463.214, 'text': 'real simple, just go remove instead of add.', 'start': 460.853, 'duration': 2.361}, {'end': 464.014, 'text': 'pretty simple.', 'start': 463.214, 'duration': 0.8}, {'end': 472.197, 'text': "these are just going to make changes to our array list and then, of course, we're going to provide song component, the option to get song components,", 'start': 464.014, 'duration': 8.183}], 'summary': 'Tutorial offers option to remove individual song components.', 'duration': 41.864, 'max_score': 452.669, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0452669.jpg'}, {'end': 554.622, 'src': 'embed', 'start': 530.006, 'weight': 4, 'content': [{'end': 536.669, 'text': "And since everything's a component or a song component, it can be very easy for me to change everything into an iterator.", 'start': 530.006, 'duration': 6.663}, {'end': 537.449, 'text': 'There you are.', 'start': 536.909, 'duration': 0.54}, {'end': 539.351, 'text': 'Just changed everything into an iterator.', 'start': 537.59, 'duration': 1.761}, {'end': 541.932, 'text': 'And now that I have that iterator created,', 'start': 539.531, 'duration': 2.401}, {'end': 547.916, 'text': "it's going to allow me to iterate through all of the songs and song groupings that are inside of each song group.", 'start': 541.932, 'duration': 5.984}, {'end': 548.857, 'text': 'Song iterator.', 'start': 548.096, 'duration': 0.761}, {'end': 549.837, 'text': 'Call has.', 'start': 549.037, 'duration': 0.8}, {'end': 551.398, 'text': 'Next Like that.', 'start': 550.197, 'duration': 1.201}, {'end': 552.619, 'text': "I'm going to go to song.", 'start': 551.418, 'duration': 1.201}, {'end': 554.622, 'text': 'component song info.', 'start': 552.879, 'duration': 1.743}], 'summary': 'The speaker transformed components into an iterator to iterate through songs and song groupings.', 'duration': 24.616, 'max_score': 530.006, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0530006.jpg'}, {'end': 599.276, 'src': 'heatmap', 'start': 565.158, 'weight': 3, 'content': [{'end': 574.029, 'text': "and then we're going to go song info and call display song info so that it displays the information on the individual song.", 'start': 565.158, 'duration': 8.871}, {'end': 583.54, 'text': 'and now that we did all that for all those songs, what we need to do now is go and actually create song.java, which is right here,', 'start': 574.029, 'duration': 9.511}, {'end': 587.54, 'text': 'just going to be information in regards to the individual song.', 'start': 584.656, 'duration': 2.884}, {'end': 589.463, 'text': "So I'm going to go class song.", 'start': 587.56, 'duration': 1.903}, {'end': 599.276, 'text': "I'm going to also extend song component so that I'll be able to treat the songs and the song groupings the same to take advantage of polymorphism.", 'start': 589.823, 'duration': 9.453}], 'summary': 'Creating song.java with song information and polymorphism', 'duration': 25.247, 'max_score': 565.158, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0565158.jpg'}, {'end': 716.77, 'src': 'heatmap', 'start': 682.182, 'weight': 0.716, 'content': [{'end': 685.083, 'text': "and then we'll say something like in git release year.", 'start': 682.182, 'duration': 2.901}, {'end': 690.044, 'text': "so that's going to print out all the information that we need in regards to our individual songs.", 'start': 685.083, 'duration': 4.961}, {'end': 693.766, 'text': "so let's save it and now we can move back into our disc jockey.", 'start': 690.044, 'duration': 3.722}, {'end': 694.846, 'text': "let's save song group.", 'start': 693.766, 'duration': 1.08}, {'end': 695.726, 'text': "we're done with that.", 'start': 694.846, 'duration': 0.88}, {'end': 699.047, 'text': 'so disc jockey.java, you saw it in the last tutorial.', 'start': 695.726, 'duration': 3.321}, {'end': 701.248, 'text': "we're going to make it much easier to use this time.", 'start': 699.047, 'duration': 2.201}, {'end': 706.209, 'text': "we're going to go public class disc jockey and this guy's going to feed up the songs and the groups of songs.", 'start': 701.248, 'duration': 4.961}, {'end': 716.77, 'text': "we're going to create song component, song list and then public disc jockey and it's going to be passed a songhong component, new song list,", 'start': 706.209, 'duration': 10.561}], 'summary': 'Using java to create a disc jockey class for handling songs and song groups.', 'duration': 34.588, 'max_score': 682.182, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0682182.jpg'}, {'end': 716.77, 'src': 'embed', 'start': 685.083, 'weight': 5, 'content': [{'end': 690.044, 'text': "so that's going to print out all the information that we need in regards to our individual songs.", 'start': 685.083, 'duration': 4.961}, {'end': 693.766, 'text': "so let's save it and now we can move back into our disc jockey.", 'start': 690.044, 'duration': 3.722}, {'end': 694.846, 'text': "let's save song group.", 'start': 693.766, 'duration': 1.08}, {'end': 695.726, 'text': "we're done with that.", 'start': 694.846, 'duration': 0.88}, {'end': 699.047, 'text': 'so disc jockey.java, you saw it in the last tutorial.', 'start': 695.726, 'duration': 3.321}, {'end': 701.248, 'text': "we're going to make it much easier to use this time.", 'start': 699.047, 'duration': 2.201}, {'end': 706.209, 'text': "we're going to go public class disc jockey and this guy's going to feed up the songs and the groups of songs.", 'start': 701.248, 'duration': 4.961}, {'end': 716.77, 'text': "we're going to create song component, song list and then public disc jockey and it's going to be passed a songhong component, new song list,", 'start': 706.209, 'duration': 10.561}], 'summary': 'Developing a disc jockey program to manage songs and song groups in java.', 'duration': 31.687, 'max_score': 685.083, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0685083.jpg'}, {'end': 760.782, 'src': 'heatmap', 'start': 728.592, 'weight': 0.833, 'content': [{'end': 736.814, 'text': "that's going to call all of the methods that are going to allow us to print out information in regards to the songs and song groupings.", 'start': 728.592, 'duration': 8.222}, {'end': 747.318, 'text': "So we're going to go to song list, display song info which you've seen in every single object that extends song component dot java, right up there.", 'start': 737.114, 'duration': 10.204}, {'end': 748.198, 'text': 'So save that.', 'start': 747.538, 'duration': 0.66}, {'end': 754.26, 'text': 'And now we need to go into song list generator dot java and make everything work, which is going to be really cool.', 'start': 748.418, 'duration': 5.842}, {'end': 760.782, 'text': "So let's go public class, song list generator, public Static void, main.", 'start': 754.3, 'duration': 6.482}], 'summary': 'Creating methods to print song information in song list and generator.', 'duration': 32.19, 'max_score': 728.592, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0728592.jpg'}], 'start': 380.414, 'title': 'Implementing composite and displaying song info', 'summary': 'Describes implementing composite pattern for creating group and song components, with methods for setting defaults, providing access, and adding/removing components. it also focuses on displaying song information, creating a song object in java, utilizing iterator design pattern and polymorphism, and creating a disc jockey class to manage song lists and groupings.', 'chapters': [{'end': 491.912, 'start': 380.414, 'title': 'Composite pattern for data description', 'summary': 'Describes the implementation of the composite pattern to create group and song components with simple methods for setting defaults, providing access, adding and removing components.', 'duration': 111.498, 'highlights': ['The chapter focuses on using the composite pattern to create group and song components, emphasizing simplicity and ease of understanding.', 'The implementation includes methods for setting default group name and group description, as well as providing access to these properties.', 'The tutorial also covers adding individual song components and providing methods for removing and retrieving song components from the array list.']}, {'end': 770.507, 'start': 491.932, 'title': 'Display song info', 'summary': 'Focuses on displaying song information and creating a song object in java, utilizing the iterator design pattern and polymorphism, as well as creating a disc jockey class to manage song lists and groupings.', 'duration': 278.575, 'highlights': ['The chapter extensively discusses creating a song object in Java, utilizing polymorphism to treat songs and song groupings the same, and implementing methods to provide song information such as song name, band name, and release year. The chapter emphasizes creating a song object in Java, utilizing polymorphism for treating songs and song groupings similarly, and implementing methods to provide song information such as song name, band name, and release year.', 'The use of the iterator design pattern is detailed, allowing the iteration through all songs and song groupings, enabling the display of individual song information. The chapter details the use of the iterator design pattern that enables iteration through all songs and song groupings, allowing the display of individual song information.', 'The creation of a disc jockey class is explained, which manages song lists and groupings, and the implementation of methods to print out information regarding songs and song groupings is detailed. The chapter explains the creation of a disc jockey class to manage song lists and groupings, and details the implementation of methods to print out information regarding songs and song groupings.']}], 'duration': 390.093, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0380414.jpg', 'highlights': ['The chapter focuses on using the composite pattern to create group and song components, emphasizing simplicity and ease of understanding.', 'The implementation includes methods for setting default group name and group description, as well as providing access to these properties.', 'The tutorial also covers adding individual song components and providing methods for removing and retrieving song components from the array list.', 'The chapter extensively discusses creating a song object in Java, utilizing polymorphism to treat songs and song groupings the same, and implementing methods to provide song information such as song name, band name, and release year.', 'The use of the iterator design pattern is detailed, allowing the iteration through all songs and song groupings, enabling the display of individual song information.', 'The creation of a disc jockey class is explained, which manages song lists and groupings, and the implementation of methods to print out information regarding songs and song groupings is detailed.']}, {'end': 1006.093, 'segs': [{'end': 818.835, 'src': 'embed', 'start': 788.437, 'weight': 0, 'content': [{'end': 792.379, 'text': "And then the next one I'm going to create here is heavy metal music.", 'start': 788.437, 'duration': 3.942}, {'end': 795.08, 'text': 'And this is just going to be heavy metal.', 'start': 792.659, 'duration': 2.421}, {'end': 798.642, 'text': 'And then what seems to be very popular now, dubstep.', 'start': 795.3, 'duration': 3.342}, {'end': 799.903, 'text': "Don't murder me on this.", 'start': 798.822, 'duration': 1.081}, {'end': 803.265, 'text': "I'm going to consider dubstep a version of industrial music.", 'start': 799.963, 'duration': 3.302}, {'end': 809.768, 'text': 'So dubstep is actually going to be inside of a song group that is inside of the song group called industrial music or the folder.', 'start': 803.485, 'duration': 6.283}, {'end': 813.29, 'text': 'Every time I say song group, you can just think folder, whatever you want to think.', 'start': 809.948, 'duration': 3.342}, {'end': 818.835, 'text': "Jargon-wise, that is definitely wrong, but what are you going to do? I'm going to copy and paste all this additional information in here.", 'start': 813.47, 'duration': 5.365}], 'summary': 'Creating heavy metal and dubstep songs, dubstep considered a version of industrial music.', 'duration': 30.398, 'max_score': 788.437, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0788437.jpg'}, {'end': 847.597, 'src': 'embed', 'start': 825.581, 'weight': 1, 'content': [{'end': 833.768, 'text': "Then I need to create a top-level component that's going to hold every single song group and every single individual song, every song.", 'start': 825.581, 'duration': 8.187}, {'end': 835.009, 'text': "This is all I'm doing here.", 'start': 834.028, 'duration': 0.981}, {'end': 836.73, 'text': 'See? This is the song group.', 'start': 835.189, 'duration': 1.541}, {'end': 838.071, 'text': "That's what I'm creating right now.", 'start': 836.77, 'duration': 1.301}, {'end': 839.752, 'text': "There's individual songs.", 'start': 838.331, 'duration': 1.421}, {'end': 840.833, 'text': 'This is the song groups.', 'start': 839.792, 'duration': 1.041}, {'end': 844.515, 'text': 'These are going to be industrial and heavy metal and dubstep and all that.', 'start': 840.913, 'duration': 3.602}, {'end': 847.597, 'text': "And then it's going to be in the situation with industrial music.", 'start': 844.535, 'duration': 3.062}], 'summary': 'Creating top-level component for song groups and individual songs, including industrial, heavy metal, and dubstep genres.', 'duration': 22.016, 'max_score': 825.581, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0825581.jpg'}, {'end': 1003.19, 'src': 'heatmap', 'start': 948.132, 'weight': 3, 'content': [{'end': 959.056, 'text': "I'm gonna name my disc jockey crazy Larry, new disc jockey, and I'm gonna pass him every song which is of type song component which everything is.", 'start': 948.132, 'duration': 10.924}, {'end': 965.279, 'text': 'song Java and song group are both song components and and as you see here with this jockey,', 'start': 959.056, 'duration': 6.223}, {'end': 974.427, 'text': 'here it is new song list and that is going to allow me to iterate through and print out all that information makes for some really tight code and then to print it.', 'start': 965.279, 'duration': 9.148}, {'end': 983.334, 'text': 'i just go crazy, larry, get song list like that, like that, and if we file, save it and execute, you can see it cycled through it, printed out.', 'start': 974.427, 'duration': 8.907}, {'end': 984.235, 'text': 'first song list.', 'start': 983.334, 'duration': 0.901}, {'end': 985.456, 'text': 'every song available.', 'start': 984.235, 'duration': 1.221}, {'end': 988.678, 'text': 'industrial, along with a definition for industrial music.', 'start': 985.456, 'duration': 3.222}, {'end': 990.26, 'text': 'two industrial bands.', 'start': 988.678, 'duration': 1.582}, {'end': 991.841, 'text': 'dubstep with a definition.', 'start': 990.26, 'duration': 1.581}, {'end': 993.482, 'text': 'two dubstep bands.', 'start': 991.841, 'duration': 1.641}, {'end': 995.684, 'text': 'heavy metal with two heavy metal bands.', 'start': 993.482, 'duration': 2.202}, {'end': 997.325, 'text': "so there's the composite design pattern.", 'start': 995.684, 'duration': 1.641}, {'end': 1003.19, 'text': "if you didn't quite get everything, get the code underneath the video, look at the comments inside of it and you'll definitely get it.", 'start': 997.325, 'duration': 5.865}], 'summary': 'Using composite design pattern to iterate through and print song information, including industrial, dubstep, and heavy metal genres.', 'duration': 37.911, 'max_score': 948.132, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0948132.jpg'}], 'start': 770.727, 'title': 'Organizing and creating music content', 'summary': 'Discusses creating music folders, groupings, and master song groups for industrial bands, including heavy metal and dubstep, with the aim to organize content effectively, and utilizing the disc jockey class to iterate and print out all the information.', 'chapters': [{'end': 825.3, 'start': 770.727, 'title': 'Creating music folder and groupings', 'summary': 'Discusses creating a folder to contain industrial bands, including sub-groupings for heavy metal and dubstep, with the intention to add descriptions, aiming to organize music content effectively.', 'duration': 54.573, 'highlights': ['The chapter introduces creating a folder for industrial bands, with sub-groupings for heavy metal and dubstep, to organize music content effectively.', 'The folder will contain another song grouping for heavy metal music, and dubstep will be considered a version of industrial music.', 'Emphasizing the organization of music content, the chapter aims to create descriptions for industrial music, heavy metal music, and dubstep within their respective groupings.']}, {'end': 1006.093, 'start': 825.581, 'title': 'Creating master song group and individual songs', 'summary': 'Describes the process of creating a master song group and individual song components, including adding industrial, dubstep, and heavy metal music groupings with specific songs and bands, and utilizing the disc jockey class to iterate and print out all the information.', 'duration': 180.512, 'highlights': ['The process involves creating a top-level component to hold every single song group and individual song, including industrial, heavy metal, and dubstep music groupings.', 'Adding specific music groupings such as industrial music, dubstep, and heavy metal, along with individual songs and bands, demonstrating the composite design pattern.', 'Utilizing the disc jockey class to iterate through and print out all the information, resulting in tight code and the capability to cycle through and print out all available songs and music groupings.']}], 'duration': 235.366, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/2HUnoKyC9l0/pics/2HUnoKyC9l0770727.jpg', 'highlights': ['The chapter introduces creating a folder for industrial bands, with sub-groupings for heavy metal and dubstep, to organize music content effectively.', 'The process involves creating a top-level component to hold every single song group and individual song, including industrial, heavy metal, and dubstep music groupings.', 'Emphasizing the organization of music content, the chapter aims to create descriptions for industrial music, heavy metal music, and dubstep within their respective groupings.', 'Adding specific music groupings such as industrial music, dubstep, and heavy metal, along with individual songs and bands, demonstrating the composite design pattern.', 'Utilizing the disc jockey class to iterate through and print out all the information, resulting in tight code and the capability to cycle through and print out all available songs and music groupings.', 'The folder will contain another song grouping for heavy metal music, and dubstep will be considered a version of industrial music.']}], 'highlights': ['The composite design pattern allows you to treat individual objects and compositions of objects uniformly, making it easier to manage complex hierarchies within the software system.', 'It enables the representation of part-whole hierarchies, where components can be further divided into smaller and smaller components, aiding in the organization and structuring of data.', 'The pattern facilitates the structuring of data or representation of the inner workings of every part of a whole object individually, providing clarity and ease of management.', 'The composite design pattern overview Explains the structure of components, inheritance, and the logic behind song groups and individual songs.', 'Demonstration in Eclipse Demonstrates the implementation of the composite design pattern in Eclipse.', 'Definition of songComponent Defines an abstract class called songComponent to encompass song and song group functionalities.', "Unsupported operation exception Introduces the concept of throwing an unsupported operation exception to handle cases where it doesn't make sense for a song or song group to inherit a method.", 'The chapter introduces the definition of song components and grouping with an abstract class and methods for adding, removing, and getting components.', 'The tutorial emphasizes the use of array lists to store songs and song groups, enabling easy iteration and management of the stored information.', 'Defining methods for accessing and manipulating song information, such as retrieving song names, band names, and release year, is a key aspect.', 'The chapter covers the inheritance of default implementation, providing a comprehensive overview of the design and functionality of the abstract class and its extensions.', 'The chapter focuses on using the composite pattern to create group and song components, emphasizing simplicity and ease of understanding.', 'The implementation includes methods for setting default group name and group description, as well as providing access to these properties.', 'The tutorial also covers adding individual song components and providing methods for removing and retrieving song components from the array list.', 'The chapter extensively discusses creating a song object in Java, utilizing polymorphism to treat songs and song groupings the same, and implementing methods to provide song information such as song name, band name, and release year.', 'The use of the iterator design pattern is detailed, allowing the iteration through all songs and song groupings, enabling the display of individual song information.', 'The creation of a disc jockey class is explained, which manages song lists and groupings, and the implementation of methods to print out information regarding songs and song groupings is detailed.', 'The chapter introduces creating a folder for industrial bands, with sub-groupings for heavy metal and dubstep, to organize music content effectively.', 'The process involves creating a top-level component to hold every single song group and individual song, including industrial, heavy metal, and dubstep music groupings.', 'Emphasizing the organization of music content, the chapter aims to create descriptions for industrial music, heavy metal music, and dubstep within their respective groupings.', 'Adding specific music groupings such as industrial music, dubstep, and heavy metal, along with individual songs and bands, demonstrating the composite design pattern.', 'Utilizing the disc jockey class to iterate through and print out all the information, resulting in tight code and the capability to cycle through and print out all available songs and music groupings.', 'The folder will contain another song grouping for heavy metal music, and dubstep will be considered a version of industrial music.']}