title
Java calculator app 🖩

description
Java simple calculator program w/ GUI #Java #calculator #app (NOT A COMPLETE CALCULATOR)

detail
{'title': 'Java calculator app 🖩', 'heatmap': [{'end': 130.46, 'start': 99.518, 'weight': 0.832}, {'end': 892.827, 'start': 868.441, 'weight': 0.773}, {'end': 976.811, 'start': 953.414, 'weight': 0.736}, {'end': 1204.225, 'start': 1161.656, 'weight': 0.867}, {'end': 1414.611, 'start': 1388.818, 'weight': 0.704}, {'end': 1619.656, 'start': 1596.013, 'weight': 0.899}, {'end': 1786.876, 'start': 1721.473, 'weight': 0.754}, {'end': 1993.576, 'start': 1950.097, 'weight': 0.703}], 'summary': 'Demonstrates creating a simple calculator app in java, covering steps to set up a new java project, create a calculator gui using java swing, and implement function buttons for arithmetic operations, clearing input, and deleting characters.', 'chapters': [{'end': 336.069, 'segs': [{'end': 80.625, 'src': 'embed', 'start': 0.069, 'weight': 0, 'content': [{'end': 1.33, 'text': "how's it going everybody?", 'start': 0.069, 'duration': 1.261}, {'end': 2.15, 'text': "it's your bro here.", 'start': 1.33, 'duration': 0.82}, {'end': 7.914, 'text': "hope you're doing well, and in this video i'm going to teach you guys how we can make a simple calculator program using java.", 'start': 2.15, 'duration': 5.764}, {'end': 11.696, 'text': "so let's get into it.", 'start': 7.914, 'duration': 3.782}, {'end': 16.299, 'text': 'if you find this video helpful, please remember to like, comment and subscribe.', 'start': 11.696, 'duration': 4.603}, {'end': 19.021, 'text': 'your support will help keep this channel running.', 'start': 16.299, 'duration': 2.722}, {'end': 19.761, 'text': 'all right everybody.', 'start': 19.021, 'duration': 0.74}, {'end': 20.862, 'text': "so let's get started.", 'start': 19.761, 'duration': 1.101}, {'end': 23.604, 'text': "so we're going to create a new java project.", 'start': 20.862, 'duration': 2.742}, {'end': 27.203, 'text': "i'm going to call this calculator And then click Finish.", 'start': 23.604, 'duration': 3.599}, {'end': 31.706, 'text': "Then if it prompts you to create a module, I'm going to click Don't Create.", 'start': 27.764, 'duration': 3.942}, {'end': 34.828, 'text': "And then within the source folder, let's create a new class.", 'start': 32.186, 'duration': 2.642}, {'end': 36.769, 'text': 'So File, New, Class.', 'start': 34.948, 'duration': 1.821}, {'end': 38.81, 'text': 'And I will also call this Calculator.', 'start': 37.229, 'duration': 1.581}, {'end': 39.95, 'text': 'Or you can call this Main.', 'start': 39.09, 'duration': 0.86}, {'end': 41.191, 'text': 'Call it whatever you want, really.', 'start': 40.07, 'duration': 1.121}, {'end': 43.572, 'text': 'So Calculator.', 'start': 41.531, 'duration': 2.041}, {'end': 48.775, 'text': "And then I'm going to check Public Static Void Main so I don't have to type in this line.", 'start': 44.513, 'duration': 4.262}, {'end': 49.916, 'text': 'And then click Finish.', 'start': 49.135, 'duration': 0.781}, {'end': 54.068, 'text': "So before we forget, let's import a few things.", 'start': 51.826, 'duration': 2.242}, {'end': 56.329, 'text': "So there's three imports that we're going to need.", 'start': 54.368, 'duration': 1.961}, {'end': 70.018, 'text': 'Import everything related to javax.swing, as well as everything related to java.awt.', 'start': 56.929, 'duration': 13.089}, {'end': 77.543, 'text': 'And then lastly, import java.awt.event.', 'start': 71.299, 'duration': 6.244}, {'end': 80.625, 'text': 'And that is all the imports that we need.', 'start': 78.904, 'duration': 1.721}], 'summary': 'Learn to create a simple calculator program using java with helpful instructions.', 'duration': 80.556, 'max_score': 0.069, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ69.jpg'}, {'end': 137.004, 'src': 'heatmap', 'start': 99.518, 'weight': 3, 'content': [{'end': 103.821, 'text': 'So implements action listener.', 'start': 99.518, 'duration': 4.303}, {'end': 107.383, 'text': 'And then there is a method that we have to implement.', 'start': 104.741, 'duration': 2.642}, {'end': 109.908, 'text': 'That is the action performed method.', 'start': 107.967, 'duration': 1.941}, {'end': 115.131, 'text': "So within this main class, let's create an instance of our calculator class.", 'start': 110.508, 'duration': 4.623}, {'end': 117.573, 'text': 'So we can just type in calculator.', 'start': 115.271, 'duration': 2.302}, {'end': 121.535, 'text': "Let's call this calc equals new calculator.", 'start': 118.193, 'duration': 3.342}, {'end': 124.136, 'text': 'All right.', 'start': 123.836, 'duration': 0.3}, {'end': 130.46, 'text': "And then before the constructor, let's declare a few things and then let me just add some spaces.", 'start': 124.256, 'duration': 6.204}, {'end': 131.641, 'text': 'All right.', 'start': 131.361, 'duration': 0.28}, {'end': 133.762, 'text': "So let's declare everything that we'll need.", 'start': 131.741, 'duration': 2.021}, {'end': 137.004, 'text': "So first we'll need a J frame and we'll call this frame.", 'start': 133.962, 'duration': 3.042}], 'summary': 'Implement action listener, create instance of calculator class, and declare jframe in main class.', 'duration': 26.496, 'max_score': 99.518, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ99518.jpg'}, {'end': 200.063, 'src': 'embed', 'start': 170.564, 'weight': 4, 'content': [{'end': 174.187, 'text': "And we'll create an array of J buttons to hold all of our function buttons.", 'start': 170.564, 'duration': 3.623}, {'end': 178.651, 'text': "So that's things like add, subtract, divide, equals, decimal.", 'start': 174.347, 'duration': 4.304}, {'end': 186.437, 'text': "So J button, straight braces for an array, and we'll call these function buttons.", 'start': 179.571, 'duration': 6.866}, {'end': 190.959, 'text': 'equals new j button.', 'start': 187.617, 'duration': 3.342}, {'end': 195.401, 'text': 'this will hold eight buttons.', 'start': 190.959, 'duration': 4.442}, {'end': 197.622, 'text': "let's name all of the function buttons.", 'start': 195.401, 'duration': 2.221}, {'end': 200.063, 'text': 'the number buttons will make anonymous.', 'start': 197.622, 'duration': 2.441}], 'summary': 'Creating an array of 8 function buttons for a calculator interface.', 'duration': 29.499, 'max_score': 170.564, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ170564.jpg'}, {'end': 310.501, 'src': 'embed', 'start': 259.464, 'weight': 5, 'content': [{'end': 263.427, 'text': "So I think it's actually best if we declare a font that we can reuse easily.", 'start': 259.464, 'duration': 3.963}, {'end': 269.21, 'text': "So what I'm going to type is font, my font equals new font.", 'start': 263.847, 'duration': 5.363}, {'end': 272.771, 'text': 'Then within parentheses, I can specify a font style.', 'start': 269.53, 'duration': 3.241}, {'end': 274.792, 'text': 'And I like the font ink font.', 'start': 272.891, 'duration': 1.901}, {'end': 279.099, 'text': "So I'm going to use that one, but use whatever font that you want.", 'start': 275.477, 'duration': 3.622}, {'end': 280.719, 'text': 'and then I want this to be bold.', 'start': 279.099, 'duration': 1.62}, {'end': 289.583, 'text': "So in the next field, I'm going to type font dot bold and then a size, and I will pick 30, because that's a decent size for my buttons.", 'start': 280.719, 'duration': 8.864}, {'end': 296.186, 'text': 'and then, lastly, we just have a few double values to declare so double num1.', 'start': 289.583, 'duration': 6.603}, {'end': 303.444, 'text': "this will be our first number, and let's set this to 0, and Number two equals zero as well.", 'start': 296.186, 'duration': 7.258}, {'end': 304.948, 'text': 'And our result.', 'start': 304.186, 'duration': 0.762}, {'end': 307.053, 'text': 'And that will also equal zero.', 'start': 305.569, 'duration': 1.484}, {'end': 310.501, 'text': 'And then a char value called operator.', 'start': 308.116, 'duration': 2.385}], 'summary': "Declaring a reusable font with style 'ink' and size 30, and initializing number variables to 0.", 'duration': 51.037, 'max_score': 259.464, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ259464.jpg'}], 'start': 0.069, 'title': 'Creating a java calculator', 'summary': 'Explains how to create a simple calculator program in java, covering the steps to set up a new java project, import necessary packages, create a constructor, and declare components like jframe, jtextfield, and jbuttons. it also discusses creating an array of j buttons to hold function buttons such as add, subtract, divide, equals, and decimal, along with declaring a font and double values for the calculator application.', 'chapters': [{'end': 169.564, 'start': 0.069, 'title': 'Creating simple calculator in java', 'summary': 'Explains how to create a simple calculator program in java, covering the steps to set up a new java project, import necessary packages, create a constructor, and declare components like jframe, jtextfield, and jbuttons.', 'duration': 169.495, 'highlights': ['The chapter explains how to create a simple calculator program in Java The video teaches how to create a simple calculator program using Java.', 'Covering the steps to set up a new Java project The tutorial covers the steps to create a new Java project and set it up for the calculator program.', 'Import necessary packages like javax.swing, java.awt, and java.awt.event The tutorial mentions the import of necessary packages related to javax.swing, java.awt, and java.awt.event.', 'Creation of a constructor and declaration of components like Jframe, Jtextfield, and Jbuttons The chapter explains the creation of a constructor and the declaration of essential components like Jframe, Jtextfield, and Jbuttons for the calculator program.']}, {'end': 336.069, 'start': 170.564, 'title': 'Creating function buttons and panel', 'summary': 'Discusses creating an array of j buttons to hold function buttons such as add, subtract, divide, equals, and decimal, along with declaring a font and double values for the calculator application.', 'duration': 165.505, 'highlights': ['Creating an array of J buttons to hold function buttons like add, subtract, divide, equals, and decimal, with a total of 8 buttons.', "Declaring a font 'my font' with the font style 'Ink Free', set to bold, and size 30 for reuse across all buttons.", "Declaring double values num1, num2, and result, initialized to 0, and a char value 'operator' to hold mathematical operators like multiply, subtract, addition, and division."]}], 'duration': 336, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ69.jpg', 'highlights': ['The chapter explains how to create a simple calculator program in Java The video teaches how to create a simple calculator program using Java.', 'Covering the steps to set up a new Java project The tutorial covers the steps to create a new Java project and set it up for the calculator program.', 'Import necessary packages like javax.swing, java.awt, and java.awt.event The tutorial mentions the import of necessary packages related to javax.swing, java.awt, and java.awt.event.', 'Creation of a constructor and declaration of components like Jframe, Jtextfield, and Jbuttons The chapter explains the creation of a constructor and the declaration of essential components like Jframe, Jtextfield, and Jbuttons for the calculator program.', 'Creating an array of J buttons to hold function buttons like add, subtract, divide, equals, and decimal, with a total of 8 buttons.', "Declaring a font 'my font' with the font style 'Ink Free', set to bold, and size 30 for reuse across all buttons.", "Declaring double values num1, num2, and result, initialized to 0, and a char value 'operator' to hold mathematical operators like multiply, subtract, addition, and division."]}, {'end': 538.042, 'segs': [{'end': 369.398, 'src': 'embed', 'start': 336.709, 'weight': 1, 'content': [{'end': 340.33, 'text': "So I'm going to type in calcu later.", 'start': 336.709, 'duration': 3.621}, {'end': 347.308, 'text': "And then there's a few other things we need to do, such as frame.setDefaultCloseOperation.", 'start': 341.445, 'duration': 5.863}, {'end': 352.31, 'text': 'Then the operation is jFrame.exitOnClose.', 'start': 347.908, 'duration': 4.402}, {'end': 355.051, 'text': 'So this allows us to close out of the program.', 'start': 353.01, 'duration': 2.041}, {'end': 359.213, 'text': 'And then a size, frame.setSize.', 'start': 355.732, 'duration': 3.481}, {'end': 365.136, 'text': "I usually pick 420 by 420, but we're going to need a slightly bigger height.", 'start': 360.554, 'duration': 4.582}, {'end': 367.537, 'text': 'So 550 was a good height for this.', 'start': 365.616, 'duration': 1.921}, {'end': 369.398, 'text': 'And then..', 'start': 369.078, 'duration': 0.32}], 'summary': 'Configured jframe with size 420x550 to enable program closure.', 'duration': 32.689, 'max_score': 336.709, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ336709.jpg'}, {'end': 445.746, 'src': 'embed', 'start': 398.623, 'weight': 0, 'content': [{'end': 405.506, 'text': "So anytime you make a significant change to your program, it's a good idea to test it out just to be sure that everything is working just fine.", 'start': 398.623, 'duration': 6.883}, {'end': 410.288, 'text': 'So since we added a frame, we should probably just run this once just to be sure that everything is okay.', 'start': 405.826, 'duration': 4.462}, {'end': 412.208, 'text': "So here's our calculator.", 'start': 410.948, 'duration': 1.26}, {'end': 414.509, 'text': 'It is 420 by 550.', 'start': 412.588, 'duration': 1.921}, {'end': 416.269, 'text': 'The title says calculator.', 'start': 414.509, 'duration': 1.76}, {'end': 419.55, 'text': 'And then when you hit the X button, it will close out of this program.', 'start': 416.589, 'duration': 2.961}, {'end': 422.23, 'text': "So now let's work on the text field.", 'start': 420.09, 'duration': 2.14}, {'end': 427.152, 'text': "The text field is what's going to hold all the numbers that we type in as well as the result.", 'start': 422.551, 'duration': 4.601}, {'end': 430.992, 'text': "So let's finish instantiating this J text field first.", 'start': 427.512, 'duration': 3.48}, {'end': 435.373, 'text': "So we're going to add this after all of these methods related to the frame.", 'start': 431.413, 'duration': 3.96}, {'end': 440.137, 'text': "But before we set the visibility to true, So let's finish instantiating this.", 'start': 435.713, 'duration': 4.424}, {'end': 445.746, 'text': 'So text field equals new J text field.', 'start': 440.297, 'duration': 5.449}], 'summary': 'Testing the program after adding a frame; dimensions 420x550; title: calculator; x button closes program; working on text field.', 'duration': 47.123, 'max_score': 398.623, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ398623.jpg'}, {'end': 538.042, 'src': 'embed', 'start': 479.768, 'weight': 3, 'content': [{'end': 484.87, 'text': 'So text field dot set font.', 'start': 479.768, 'duration': 5.102}, {'end': 489.432, 'text': 'And since we already declared a font, we can actually reuse this.', 'start': 486.15, 'duration': 3.282}, {'end': 495.714, 'text': "So I'm going to take the name of our font and place it within the parentheses of this set font method.", 'start': 490.192, 'duration': 5.522}, {'end': 499.435, 'text': "And then we'll need to add this text field to the frame.", 'start': 496.734, 'duration': 2.701}, {'end': 503.637, 'text': 'So frame dot add text field.', 'start': 499.515, 'duration': 4.122}, {'end': 505.898, 'text': "And let's run this to test it.", 'start': 504.437, 'duration': 1.461}, {'end': 518.203, 'text': "So here's our jTextField at the top, and right now a user could actually type in a number, even letters, so we may want to limit that.", 'start': 508.894, 'duration': 9.309}, {'end': 523.327, 'text': 'So what we can do is actually use the setEditable method and set it to false.', 'start': 518.643, 'duration': 4.684}, {'end': 531.375, 'text': "So at the end, I'm going to type in textField.setEditable, and then false.", 'start': 523.847, 'duration': 7.528}, {'end': 538.042, 'text': 'And when we run this again, we can no longer update this text box.', 'start': 533.419, 'duration': 4.623}], 'summary': 'Setting font, adding text field, and limiting user input in java gui.', 'duration': 58.274, 'max_score': 479.768, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ479768.jpg'}], 'start': 336.709, 'title': 'Creating a calculator gui and text field in java', 'summary': 'Covers creating a calculator gui using java swing with a frame size of 420 by 550, and implementing functionality for closing the program. it also explains how to instantiate and format a text field, setting bounds, font, and editability, including an example of preventing user input.', 'chapters': [{'end': 419.55, 'start': 336.709, 'title': 'Creating a calculator gui', 'summary': 'Explains the process of creating a calculator gui using java swing, including setting the frame size to 420 by 550 and implementing the functionality to close the program, as well as the importance of testing after making significant changes.', 'duration': 82.841, 'highlights': ['The program sets the frame size to 420 by 550, allowing for a larger height of 550 for the calculator.', 'The functionality to close the program is implemented using jFrame.exitOnClose, ensuring a smooth user experience.', 'It is emphasized that testing the program after making significant changes is crucial to ensure everything is working correctly.']}, {'end': 538.042, 'start': 420.09, 'title': 'Creating and formatting text field', 'summary': 'Demonstrates how to instantiate and format a text field in java, setting bounds, font, and editability, with an example of setting the text field to be uneditable, thereby preventing user input.', 'duration': 117.952, 'highlights': ['The chapter begins by instantiating a J text field to hold numbers and results, setting its bounds with x position 50, y position 25, width 300, and height 50.', 'It then sets the font for the text field, reusing the already declared font, and adds the text field to the frame.', 'The example demonstrates how to use the setEditable method to make the text field uneditable, preventing user input of numbers or letters.']}], 'duration': 201.333, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ336709.jpg', 'highlights': ['The program sets the frame size to 420 by 550, allowing for a larger height of 550 for the calculator.', 'The functionality to close the program is implemented using jFrame.exitOnClose, ensuring a smooth user experience.', 'The chapter begins by instantiating a J text field to hold numbers and results, setting its bounds with x position 50, y position 25, width 300, and height 50.', 'It then sets the font for the text field, reusing the already declared font, and adds the text field to the frame.', 'The example demonstrates how to use the setEditable method to make the text field uneditable, preventing user input of numbers or letters.', 'It is emphasized that testing the program after making significant changes is crucial to ensure everything is working correctly.']}, {'end': 1107.818, 'segs': [{'end': 657.013, 'src': 'embed', 'start': 628.319, 'weight': 0, 'content': [{'end': 633.202, 'text': 'i think yep, clr, and we will type in clear.', 'start': 628.319, 'duration': 4.883}, {'end': 640.966, 'text': 'now we have all of these different buttons related to functions and i actually made an array of j buttons called function buttons.', 'start': 633.202, 'duration': 7.764}, {'end': 646.309, 'text': "so what we'll do is add all of these buttons to our array called function buttons.", 'start': 640.966, 'duration': 5.343}, {'end': 648.491, 'text': "so i'm just going to copy this title.", 'start': 646.309, 'duration': 2.182}, {'end': 657.013, 'text': "And if we want to add the first button to the first position of this array, I'm going to add a set of straight braces and type in index zero.", 'start': 649.187, 'duration': 7.826}], 'summary': 'Creating an array of function buttons for gui with index zero.', 'duration': 28.694, 'max_score': 628.319, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ628319.jpg'}, {'end': 716.968, 'src': 'embed', 'start': 682.36, 'weight': 1, 'content': [{'end': 699.683, 'text': 'So we have add first, then sub, multiply, divide, decimal, equals, delete, and clear.', 'start': 682.36, 'duration': 17.323}, {'end': 708.403, 'text': "Now let's say that we want to add an action listener, change the font, and do a few other things to each of these buttons.", 'start': 702.199, 'duration': 6.204}, {'end': 711.985, 'text': "Well, since we have eight different buttons, that's a lot of work.", 'start': 708.883, 'duration': 3.102}, {'end': 716.968, 'text': 'What we can actually do is use a for loop to iterate through this array of j buttons.', 'start': 712.305, 'duration': 4.663}], 'summary': 'Using a for loop to iterate through 8 different buttons to add action listeners and change font.', 'duration': 34.608, 'max_score': 682.36, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ682360.jpg'}, {'end': 896.27, 'src': 'heatmap', 'start': 868.441, 'weight': 0.773, 'content': [{'end': 872.163, 'text': "So I'm going to copy this from the previous for loop and paste it.", 'start': 868.441, 'duration': 3.722}, {'end': 875.664, 'text': "And then we're going to change function buttons to number buttons.", 'start': 872.423, 'duration': 3.241}, {'end': 883.368, 'text': 'And that is it for this for loop.', 'start': 881.447, 'duration': 1.921}, {'end': 890.424, 'text': 'Now with the delete button and the clear button, this is not going to be on our J panel that has a gridded layout.', 'start': 884.218, 'duration': 6.206}, {'end': 892.827, 'text': "What we'll do is set the bounds for these separately.", 'start': 890.584, 'duration': 2.243}, {'end': 896.27, 'text': "So let's work on the delete button first.", 'start': 893.467, 'duration': 2.803}], 'summary': 'Updating code to change function buttons to number buttons and set bounds for delete and clear buttons separately.', 'duration': 27.829, 'max_score': 868.441, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ868441.jpg'}, {'end': 980.514, 'src': 'heatmap', 'start': 953.414, 'weight': 0.736, 'content': [{'end': 956.535, 'text': "And let's run this just to be sure that everything is working so far.", 'start': 953.414, 'duration': 3.121}, {'end': 963.918, 'text': 'So we still need to add the number buttons and the function buttons, but we should see at least our delete button and our clear button.', 'start': 956.935, 'duration': 6.983}, {'end': 966.819, 'text': 'And they are right here at the bottom.', 'start': 965.419, 'duration': 1.4}, {'end': 968.12, 'text': "So that's pretty sweet.", 'start': 967.059, 'duration': 1.061}, {'end': 971.701, 'text': "So we're going to create a J panel to hold all of the different buttons.", 'start': 968.46, 'duration': 3.241}, {'end': 973.382, 'text': "So let's work on that next.", 'start': 972.121, 'duration': 1.261}, {'end': 976.811, 'text': "now let's work on the j panel that we have.", 'start': 974.269, 'duration': 2.542}, {'end': 978.832, 'text': 'so we need to finish instantiating this.', 'start': 976.811, 'duration': 2.021}, {'end': 980.514, 'text': 'we already declared it at the top.', 'start': 978.832, 'duration': 1.682}], 'summary': 'Setting up buttons and j panel for the interface.', 'duration': 27.1, 'max_score': 953.414, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ953414.jpg'}], 'start': 538.422, 'title': 'Creating and applying function buttons', 'summary': 'Covers the creation of various function buttons such as addition, subtraction, multiplication, division, decimal, equals, delete, and clear, adding them to an array named function buttons. it also includes creating an array of buttons, using for loops to add action listeners and change font for each button, then setting the layout for the panel and adding buttons to it.', 'chapters': [{'end': 648.491, 'start': 538.422, 'title': 'Creating function buttons', 'summary': 'Discusses the process of creating various function buttons, including addition, subtraction, multiplication, division, decimal, equals, delete, and clear, and adding them to an array named function buttons.', 'duration': 110.069, 'highlights': ['The chapter covers the creation of different function buttons, including addition, subtraction, multiplication, division, decimal, equals, delete, and clear, and adds them to an array named function buttons.', 'The buttons include a plus sign for addition, a minus sign for subtraction, an asterisk for multiplication, D-I-V for division, a dot for decimal, E-Q-U for equals, del for delete, and clr for clear.', 'The speaker also mentions copying and pasting the button creation process to have a total of eight different function buttons.', 'The process involves creating JButtons for each function, such as addition, subtraction, multiplication, division, decimal, equals, delete, and clear, and adding them to the function buttons array.']}, {'end': 1107.818, 'start': 649.187, 'title': 'Creating button array and applying functions', 'summary': 'Discusses creating an array of buttons, using for loops to add action listeners and change font for each button, then setting the layout for the panel and adding buttons to it.', 'duration': 458.631, 'highlights': ['Creating an array of buttons for a calculator interface The speaker creates an array of buttons for a calculator interface, including add, sub, multiply, divide, decimal, equals, delete, and clear buttons.', 'Using for loops to add action listeners and change font for each button The speaker uses for loops to iterate through the array of buttons and add action listeners and change font for each button, reducing the effort needed to apply these functions to multiple buttons.', 'Setting the layout for the panel and adding buttons to it The speaker sets a grid layout for a panel, adds buttons for numbers 1, 2, and 3 in order, and plans to add function buttons to the panel.']}], 'duration': 569.396, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ538422.jpg', 'highlights': ['The chapter covers the creation of different function buttons, including addition, subtraction, multiplication, division, decimal, equals, delete, and clear, and adds them to an array named function buttons.', 'Creating an array of buttons for a calculator interface, including add, sub, multiply, divide, decimal, equals, delete, and clear buttons.', 'Using for loops to add action listeners and change font for each button, reducing the effort needed to apply these functions to multiple buttons.', 'The process involves creating JButtons for each function, such as addition, subtraction, multiplication, division, decimal, equals, delete, and clear, and adding them to the function buttons array.']}, {'end': 1501.569, 'segs': [{'end': 1204.225, 'src': 'heatmap', 'start': 1145.449, 'weight': 1, 'content': [{'end': 1150.491, 'text': "Then I think we'll add the decimal button next, D-E-C.", 'start': 1145.449, 'duration': 5.042}, {'end': 1157.655, 'text': 'And then the number zero button, which is in number buttons, zero.', 'start': 1152.052, 'duration': 5.603}, {'end': 1165.698, 'text': "And then we will add our equals button, so that's E-Q-U.", 'start': 1161.656, 'duration': 4.042}, {'end': 1170.821, 'text': "And lastly, our divide button, so that's D-I-V button.", 'start': 1166.879, 'duration': 3.942}, {'end': 1173.242, 'text': "Okay, let's take a look at this now.", 'start': 1171.621, 'duration': 1.621}, {'end': 1178.485, 'text': 'And here are all of the buttons in the order that we placed them.', 'start': 1175.323, 'duration': 3.162}, {'end': 1182.187, 'text': 'So it starts at the top and works its way to the right.', 'start': 1179.005, 'duration': 3.182}, {'end': 1184.348, 'text': 'When it reaches the end, it goes down to the next row.', 'start': 1182.347, 'duration': 2.001}, {'end': 1187.239, 'text': "Now let's add some functionality to these buttons.", 'start': 1184.918, 'duration': 2.321}, {'end': 1190.18, 'text': "So we'll do that within the action performed method.", 'start': 1187.819, 'duration': 2.361}, {'end': 1197.963, 'text': "For our primary step within the action performed method, let's check to see if somebody clicks on one of these numbered buttons.", 'start': 1190.76, 'duration': 7.203}, {'end': 1201.464, 'text': "So what I think we'll do is put this within a for loop.", 'start': 1198.523, 'duration': 2.941}, {'end': 1204.225, 'text': "So we'll iterate this for loop 10 times.", 'start': 1201.984, 'duration': 2.241}], 'summary': 'Adding buttons like decimal, zero, equals, and divide to the interface.', 'duration': 58.776, 'max_score': 1145.449, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1145449.jpg'}, {'end': 1414.611, 'src': 'heatmap', 'start': 1388.818, 'weight': 0.704, 'content': [{'end': 1396.559, 'text': 'and then we are going to assign our operator, which is a character.', 'start': 1388.818, 'duration': 7.741}, {'end': 1406.049, 'text': "so operator equals the plus sign, And let's clear the text field too.", 'start': 1396.559, 'duration': 9.49}, {'end': 1414.611, 'text': 'So text field dot set text, then just an empty set of quotes.', 'start': 1406.189, 'duration': 8.422}], 'summary': 'Assigning the operator as the plus sign and clearing the text field.', 'duration': 25.793, 'max_score': 1388.818, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1388818.jpg'}, {'end': 1501.569, 'src': 'embed', 'start': 1455.843, 'weight': 0, 'content': [{'end': 1458.405, 'text': "so there's a few things we need to fill in within here.", 'start': 1455.843, 'duration': 2.562}, {'end': 1466.916, 'text': 'so if e dot get source method is equal to our equals button,', 'start': 1458.405, 'duration': 8.511}, {'end': 1489.19, 'text': "So what we'll do is take num2 equals double.parseDouble, and then textField.getText.", 'start': 1469.858, 'duration': 19.332}, {'end': 1495.725, 'text': "Then we're going to use a switch statement for the operator.", 'start': 1492.062, 'duration': 3.663}, {'end': 1497.466, 'text': "It depends on which symbol they're using.", 'start': 1495.745, 'duration': 1.721}, {'end': 1501.569, 'text': "That will determine what mathematical operation we're going to perform.", 'start': 1497.946, 'duration': 3.623}], 'summary': 'Developing a program to perform mathematical operations based on user input.', 'duration': 45.726, 'max_score': 1455.843, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1455843.jpg'}], 'start': 1107.818, 'title': 'Creating a basic calculator', 'summary': 'Covers adding buttons for add, sub, multiply, decimal, zero, equals, and divide, implementing functionality using for loop and if statement, concatenating strings, updating text fields, and creating a basic calculator with code snippets for arithmetic operations and equals button functionality.', 'chapters': [{'end': 1245.531, 'start': 1107.818, 'title': 'Adding buttons and functionality', 'summary': 'Describes the process of adding various buttons, such as add, sub, multiply, decimal, number zero, equals, and divide, in a specific order and then implementing functionality for these buttons within the action performed method using a for loop and an if statement.', 'duration': 137.713, 'highlights': ['Adding various buttons like add, sub, multiply, decimal, number zero, equals, and divide in a specific order The speaker adds various buttons such as add, sub, multiply, decimal, number zero, equals, and divide in a specific order, demonstrating the step-by-step process of adding these buttons to the panel.', 'Implementing functionality for the buttons within the action performed method using a for loop and an if statement The chapter explains the process of implementing functionality for the buttons within the action performed method using a for loop and an if statement, providing a detailed example of how this is achieved.', 'Using a for loop to iterate 10 times to check if somebody clicks on one of the numbered buttons The speaker uses a for loop to iterate 10 times to check if somebody clicks on one of the numbered buttons, demonstrating a systematic approach to handling button clicks within the program.']}, {'end': 1328.036, 'start': 1245.531, 'title': 'Java gui coding', 'summary': 'Explains how to concatenate strings and update text fields using java methods, with a focus on adding functionality to the decimal button, ensuring everything is working.', 'duration': 82.505, 'highlights': ['The chapter explains how to concatenate strings and update text fields using Java methods.', 'The focus is on adding functionality to the decimal button.', 'Ensuring everything is working is emphasized.']}, {'end': 1501.569, 'start': 1329.237, 'title': 'Creating a basic calculator', 'summary': 'Covers the process of creating a basic calculator, including code snippets for adding, subtracting, multiplying, and dividing numbers, as well as handling the equals button functionality using parsedouble and switch statement.', 'duration': 172.332, 'highlights': ['The chapter covers the process of creating a basic calculator, including code snippets for adding, subtracting, multiplying, and dividing numbers, as well as handling the equals button functionality using parseDouble and switch statement.', 'The code involves retrieving numbers from text fields, assigning operators, and performing mathematical operations based on user input, such as addition, subtraction, multiplication, and division.', 'The equals button functionality is implemented using a switch statement to handle different mathematical operations based on the operator selected by the user.']}], 'duration': 393.751, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1107818.jpg', 'highlights': ['The chapter covers the process of creating a basic calculator, including code snippets for adding, subtracting, multiplying, and dividing numbers, as well as handling the equals button functionality using parseDouble and switch statement.', 'Adding various buttons like add, sub, multiply, decimal, number zero, equals, and divide in a specific order The speaker adds various buttons such as add, sub, multiply, decimal, number zero, equals, and divide in a specific order, demonstrating the step-by-step process of adding these buttons to the panel.', 'Implementing functionality for the buttons within the action performed method using a for loop and an if statement The chapter explains the process of implementing functionality for the buttons within the action performed method using a for loop and an if statement, providing a detailed example of how this is achieved.']}, {'end': 1791.057, 'segs': [{'end': 1596.013, 'src': 'embed', 'start': 1502.149, 'weight': 0, 'content': [{'end': 1503.91, 'text': "So we'll do this within the if statement.", 'start': 1502.149, 'duration': 1.761}, {'end': 1505.271, 'text': "We're going to create a switch.", 'start': 1503.97, 'duration': 1.301}, {'end': 1511.536, 'text': "And then within the parentheses, we're going to use the operator and compare it.", 'start': 1506.712, 'duration': 4.824}, {'end': 1518.941, 'text': 'So for the first case, this will be our plus sign.', 'start': 1515.118, 'duration': 3.823}, {'end': 1528.82, 'text': "We're going to take our result equals num1 plus num2 and then break.", 'start': 1520.794, 'duration': 8.026}, {'end': 1532.663, 'text': "And we'll have three other cases.", 'start': 1530.802, 'duration': 1.861}, {'end': 1541.87, 'text': 'So case for subtraction equals num1 minus num2.', 'start': 1535.405, 'duration': 6.465}, {'end': 1544.512, 'text': 'Same thing for multiply.', 'start': 1543.251, 'duration': 1.261}, {'end': 1553.17, 'text': 'num1 multiplied by num2, and then divide.', 'start': 1544.532, 'duration': 8.638}, {'end': 1557.793, 'text': 'num1 divided by num2.', 'start': 1555.712, 'duration': 2.081}, {'end': 1564.018, 'text': "Alright, then outside of the switch, let's just be sure we're getting the right parentheses.", 'start': 1559.574, 'duration': 4.444}, {'end': 1566.76, 'text': "So it's this one after this one.", 'start': 1565.159, 'duration': 1.601}, {'end': 1572.244, 'text': "We're going to update the text field.", 'start': 1568.301, 'duration': 3.943}, {'end': 1574.025, 'text': 'So text field dot.', 'start': 1572.304, 'duration': 1.721}, {'end': 1594.191, 'text': "set text string dot value of our result and then we'll assign num1 to be our result.", 'start': 1574.025, 'duration': 20.166}, {'end': 1596.013, 'text': 'so then we can continue.', 'start': 1594.191, 'duration': 1.822}], 'summary': 'Creating a switch to perform mathematical operations and update text field.', 'duration': 93.864, 'max_score': 1502.149, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1502149.jpg'}, {'end': 1625.821, 'src': 'heatmap', 'start': 1596.013, 'weight': 0.899, 'content': [{'end': 1599.177, 'text': "if we want to reuse the same number, okay, let's try this.", 'start': 1596.013, 'duration': 3.164}, {'end': 1606.745, 'text': "So let's take maybe 99 divided by three equals 33 times two.", 'start': 1600.72, 'duration': 6.025}, {'end': 1611.809, 'text': "That's 66 minus five plus 1.23.", 'start': 1607.225, 'duration': 4.584}, {'end': 1615.833, 'text': "All right, looks like everything's working.", 'start': 1611.809, 'duration': 4.024}, {'end': 1619.656, 'text': "Now let's work on the clear button, and this one's pretty easy.", 'start': 1616.873, 'duration': 2.783}, {'end': 1625.821, 'text': "And I'm just gonna copy one of these, paste it, and then change a few things.", 'start': 1620.396, 'duration': 5.425}], 'summary': 'Demonstrating reuse of numbers and clear button functionality in coding.', 'duration': 29.808, 'max_score': 1596.013, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1596013.jpg'}, {'end': 1663.001, 'src': 'embed', 'start': 1626.361, 'weight': 2, 'content': [{'end': 1641.355, 'text': "So if e.getsource equals the clear button, What we'll do is that we will take our text field set text to just a empty set of quotes,", 'start': 1626.361, 'duration': 14.994}, {'end': 1642.095, 'text': "and let's try it.", 'start': 1641.355, 'duration': 0.74}, {'end': 1647.54, 'text': "So one, two, three, let's hit the clear button and it clears out everything.", 'start': 1643.717, 'duration': 3.823}, {'end': 1651.022, 'text': 'And lastly, the delete button.', 'start': 1649.421, 'duration': 1.601}, {'end': 1660.398, 'text': 'So if e.getsource is equal to our delete button, There is a few extra steps.', 'start': 1652.864, 'duration': 7.534}, {'end': 1663.001, 'text': "So let's create a string variable.", 'start': 1661.159, 'duration': 1.842}], 'summary': "Code clears text field on 'clear' button click", 'duration': 36.64, 'max_score': 1626.361, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1626361.jpg'}, {'end': 1786.876, 'src': 'heatmap', 'start': 1693.862, 'weight': 5, 'content': [{'end': 1707.592, 'text': "so int i equals zero and we'll continue this as long as i is less than our string length minus one.", 'start': 1693.862, 'duration': 13.73}, {'end': 1709.694, 'text': 'then increment i by one each time.', 'start': 1707.592, 'duration': 2.102}, {'end': 1719.392, 'text': "So during each iteration of this for loop, we'll take our text field and use the set text method.", 'start': 1712.768, 'duration': 6.624}, {'end': 1738.243, 'text': 'And within the parentheses, text field dot get text plus the string, the character at our index, which is I.', 'start': 1721.473, 'duration': 16.77}, {'end': 1740.144, 'text': 'And that should be it for our delete button.', 'start': 1738.243, 'duration': 1.901}, {'end': 1751.369, 'text': "So if we were to type in a number, let's say 3.1415, and we click on the delete button,", 'start': 1742.037, 'duration': 9.332}, {'end': 1755.455, 'text': "it's going to delete the last item or character that's in here.", 'start': 1751.369, 'duration': 4.086}, {'end': 1760.201, 'text': "And then if we were to hit the clear button, it's going to just clear everything.", 'start': 1756.456, 'duration': 3.745}, {'end': 1763.228, 'text': 'Guys, I forgot about something.', 'start': 1761.687, 'duration': 1.541}, {'end': 1766.849, 'text': "What if we have to input a negative number? We don't have any way to enter that in.", 'start': 1763.288, 'duration': 3.561}, {'end': 1767.789, 'text': 'My bad.', 'start': 1767.329, 'duration': 0.46}, {'end': 1769.39, 'text': "Let's go ahead and fix that real quick.", 'start': 1767.889, 'duration': 1.501}, {'end': 1771.81, 'text': "So let's just add a negative button.", 'start': 1769.83, 'duration': 1.98}, {'end': 1773.691, 'text': "It won't take too long.", 'start': 1772.911, 'duration': 0.78}, {'end': 1776.032, 'text': "And we'll change this array to nine buttons.", 'start': 1774.131, 'duration': 1.901}, {'end': 1779.913, 'text': 'Then we are going to add this button to our array.', 'start': 1777.172, 'duration': 2.741}, {'end': 1786.876, 'text': "So let's increase this to eight and add our negative button.", 'start': 1782.414, 'duration': 4.462}], 'summary': 'Code iterates through and deletes characters, adds negative button.', 'duration': 46.282, 'max_score': 1693.862, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1693862.jpg'}, {'end': 1801.926, 'src': 'embed', 'start': 1767.889, 'weight': 4, 'content': [{'end': 1769.39, 'text': "Let's go ahead and fix that real quick.", 'start': 1767.889, 'duration': 1.501}, {'end': 1771.81, 'text': "So let's just add a negative button.", 'start': 1769.83, 'duration': 1.98}, {'end': 1773.691, 'text': "It won't take too long.", 'start': 1772.911, 'duration': 0.78}, {'end': 1776.032, 'text': "And we'll change this array to nine buttons.", 'start': 1774.131, 'duration': 1.901}, {'end': 1779.913, 'text': 'Then we are going to add this button to our array.', 'start': 1777.172, 'duration': 2.741}, {'end': 1786.876, 'text': "So let's increase this to eight and add our negative button.", 'start': 1782.414, 'duration': 4.462}, {'end': 1791.057, 'text': "And we'll probably want to create a symbol for this as well.", 'start': 1788.756, 'duration': 2.301}, {'end': 1801.926, 'text': 'neg button equals new j button and i will add a negative sign within parentheses.', 'start': 1791.559, 'duration': 10.367}], 'summary': 'Fixing the array by adding a negative button, increasing it to nine buttons, and creating a symbol for the negative button.', 'duration': 34.037, 'max_score': 1767.889, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1767889.jpg'}], 'start': 1502.149, 'title': 'Creating a calculator app', 'summary': 'Discusses creating a calculator app using java, including implementing addition, subtraction, multiplication, and division operations, as well as functionalities for clearing the input and deleting characters.', 'chapters': [{'end': 1663.001, 'start': 1502.149, 'title': 'Creating a calculator app', 'summary': 'Discusses creating a calculator app using java, including implementing addition, subtraction, multiplication, and division operations, as well as functionalities for clearing the input and deleting characters.', 'duration': 160.852, 'highlights': ['Implementing addition, subtraction, multiplication, and division operations with num1, num2, and result variables.', 'Clear button functionality to erase input using setText method for the text field.', 'Using a switch statement to handle different cases of mathematical operations and updating the result in the text field.', 'Utilizing the getSource method to identify the button clicked and performing respective actions.', 'Testing the calculator with a specific example: 99 divided by three equals 33 times two, resulting in 66 minus five plus 1.23.', 'Discussing the delete button and the additional steps required when the delete button is clicked.']}, {'end': 1791.057, 'start': 1663.141, 'title': 'Implementing delete and clear buttons', 'summary': 'Discusses implementing a delete button to remove the last character from a text field and adding a negative button to input negative numbers, while also addressing the need for a clear button. the chapter also highlights the process of iterating through a string and updating the text field in a for loop.', 'duration': 127.916, 'highlights': ['During each iteration of the for loop, the text field is updated using the set text method to display the text field content along with the character at the current index, allowing for dynamic updating of the text field. (Relevance: 5)', 'The need to input negative numbers is addressed by adding a negative button, expanding the array to accommodate nine buttons and creating a symbol for the negative button. (Relevance: 4)', 'The chapter also emphasizes the implementation of a clear button to erase all content from the text field, providing a comprehensive functionality for the user. (Relevance: 3)']}], 'duration': 288.908, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1502149.jpg', 'highlights': ['Implementing addition, subtraction, multiplication, and division operations with num1, num2, and result variables.', 'Using a switch statement to handle different cases of mathematical operations and updating the result in the text field.', 'Clear button functionality to erase input using setText method for the text field.', 'Utilizing the getSource method to identify the button clicked and performing respective actions.', 'The need to input negative numbers is addressed by adding a negative button, expanding the array to accommodate nine buttons and creating a symbol for the negative button.', 'During each iteration of the for loop, the text field is updated using the set text method to display the text field content along with the character at the current index, allowing for dynamic updating of the text field.']}, {'end': 2054.82, 'segs': [{'end': 1869.331, 'src': 'embed', 'start': 1828.056, 'weight': 4, 'content': [{'end': 1833.12, 'text': "So we'll place this where x is 50 or y is 430.", 'start': 1828.056, 'duration': 5.064}, {'end': 1836.202, 'text': 'This will be 100 pixels long for the width and 50 for the height.', 'start': 1833.12, 'duration': 3.082}, {'end': 1840.261, 'text': "And let's also do this for our delete button.", 'start': 1838.16, 'duration': 2.101}, {'end': 1840.899, 'text': "So that's 150, 430, 150.", 'start': 1840.301, 'duration': 0.598}, {'end': 1842.28, 'text': 'The clear button will be 250, 430, 150.', 'start': 1840.901, 'duration': 1.379}, {'end': 1844.343, 'text': "And that's fine.", 'start': 1842.282, 'duration': 2.061}, {'end': 1847.004, 'text': 'And now we will want to add the negative button to the frame.', 'start': 1844.363, 'duration': 2.641}, {'end': 1848.804, 'text': "So we'll do that here.", 'start': 1847.024, 'duration': 1.78}, {'end': 1869.331, 'text': "Frame.addNegButton And let's just make sure that it's on here.", 'start': 1849.765, 'duration': 19.566}], 'summary': 'Setting coordinates and sizes for buttons on the frame.', 'duration': 41.275, 'max_score': 1828.056, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1828056.jpg'}, {'end': 1947.88, 'src': 'embed', 'start': 1896.96, 'weight': 2, 'content': [{'end': 1902.661, 'text': "The first step within here is that we'll want to retrieve whatever text is within the text field.", 'start': 1896.96, 'duration': 5.701}, {'end': 1910.522, 'text': "And let's store this as a double value within a variable which we'll call temp because we're only using this variable temporarily.", 'start': 1903.161, 'duration': 7.361}, {'end': 1917.064, 'text': 'So double temp equals double dot parse double method.', 'start': 1911.083, 'duration': 5.981}, {'end': 1924.305, 'text': "And within the parentheses of this method, we'll pass in text field dot get text.", 'start': 1917.524, 'duration': 6.781}, {'end': 1927.044, 'text': "And that's it for this first line.", 'start': 1925.603, 'duration': 1.441}, {'end': 1933.949, 'text': "So it's going to take whatever value is within text field and assign it to this variable temp.", 'start': 1927.585, 'duration': 6.364}, {'end': 1938.253, 'text': "Now we'll want to flip the sign on our temp variable.", 'start': 1934.39, 'duration': 3.863}, {'end': 1942.636, 'text': 'And one easy way to do that is just to multiply this variable by negative one.', 'start': 1938.653, 'duration': 3.983}, {'end': 1947.88, 'text': 'So temp multiplication sign equals negative one.', 'start': 1942.976, 'duration': 4.904}], 'summary': 'Retrieve and store text as a double value, then flip the sign on the variable.', 'duration': 50.92, 'max_score': 1896.96, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1896960.jpg'}, {'end': 1993.576, 'src': 'heatmap', 'start': 1950.097, 'weight': 0.703, 'content': [{'end': 1956.259, 'text': 'And then lastly, we want to set the text to whatever our temporary value is now currently.', 'start': 1950.097, 'duration': 6.162}, {'end': 1961.321, 'text': 'So text field dot set text method.', 'start': 1956.719, 'duration': 4.602}, {'end': 1972.644, 'text': "Then we're going to pass in string dot value of our temp variable.", 'start': 1961.821, 'duration': 10.823}, {'end': 1974.265, 'text': "And that's it.", 'start': 1973.785, 'duration': 0.48}, {'end': 1975.145, 'text': "So let's try it.", 'start': 1974.485, 'duration': 0.66}, {'end': 1993.576, 'text': 'so five negative times six negative equals 30 positive times one negative equals negative 30.', 'start': 1978.337, 'duration': 15.239}], 'summary': 'Setting the text to the temporary value and performing a calculation resulted in -30.', 'duration': 43.479, 'max_score': 1950.097, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1950097.jpg'}, {'end': 2020.733, 'src': 'embed', 'start': 1995.997, 'weight': 0, 'content': [{'end': 2003.622, 'text': 'so the fact that we added a negative button later on in this program is a great example and a reminder of why you should keep your code clean,', 'start': 1995.997, 'duration': 7.625}, {'end': 2011.787, 'text': "concise and organized, because if you have to make changes or somebody else has to make changes to your program, it's actually fairly easy to do so,", 'start': 2003.622, 'duration': 8.165}, {'end': 2017.791, 'text': "whether You need to delete something, you need to update something or maybe there's a new feature that's released.", 'start': 2011.787, 'duration': 6.004}, {'end': 2020.733, 'text': "It's actually fairly easy to go back and make those changes.", 'start': 2017.871, 'duration': 2.862}], 'summary': 'Adding a negative button demonstrates the importance of clean, concise, and organized code, making it easy to make changes and updates.', 'duration': 24.736, 'max_score': 1995.997, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1995997.jpg'}, {'end': 2054.82, 'src': 'embed', 'start': 2031.503, 'weight': 1, 'content': [{'end': 2035.266, 'text': "If you would like a copy of all this code, I'll post all of this in the comments down below.", 'start': 2031.503, 'duration': 3.763}, {'end': 2039.53, 'text': "But yeah, that's how to make a very simple calculator using Java.", 'start': 2035.666, 'duration': 3.864}, {'end': 2041.658, 'text': 'Hey you.', 'start': 2041.257, 'duration': 0.401}, {'end': 2043.18, 'text': "Yeah, I'm talking to you.", 'start': 2041.678, 'duration': 1.502}, {'end': 2050.893, 'text': 'If you learned something new, then you can help me help you in three easy steps by smashing that like button,', 'start': 2043.601, 'duration': 7.292}, {'end': 2054.82, 'text': "drop a comment down below and subscribe if you'd like to become a fellow bro.", 'start': 2050.893, 'duration': 3.927}], 'summary': 'Demonstrated a simple java calculator. encouraged engagement through likes, comments, and subscriptions.', 'duration': 23.317, 'max_score': 2031.503, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ2031503.jpg'}], 'start': 1791.559, 'title': 'Creating a simple calculator in java', 'summary': 'Demonstrates creating a simple calculator in java, emphasizing code modification ease, and encouraging viewer engagement.', 'chapters': [{'end': 1924.305, 'start': 1791.559, 'title': 'Creating negative button and setting bounds', 'summary': 'Focuses on creating a negative button and setting its bounds, with specific coordinates and dimensions, and adding functionality to retrieve and store text from a text field as a double value.', 'duration': 132.746, 'highlights': ['Created a negative button with specific bounds and dimensions, x=50, y=430, width=100 pixels, height=50 pixels, and added it to the frame.', 'Set bounds for delete button and clear button, with specific coordinates and dimensions, x=150, y=430, width=150 pixels, and x=250, y=430, width=150 pixels, respectively.', 'Implemented functionality to retrieve text from the text field and store it as a double value using the parseDouble method.']}, {'end': 2011.787, 'start': 1925.603, 'title': 'Flipping sign of a variable', 'summary': 'Demonstrates how to flip the sign of a variable by multiplying it by negative one and emphasizes the importance of keeping code clean, concise, and organized for easy modifications in the future.', 'duration': 86.184, 'highlights': ["The chapter illustrates the process of flipping the sign of a variable by multiplying it by negative one, exemplified by the code 'temp *= -1'.", 'Emphasizes the importance of maintaining clean, concise, and organized code for easy modification, ensuring code flexibility and accessibility for potential future changes.']}, {'end': 2054.82, 'start': 2011.787, 'title': 'Creating a simple calculator in java', 'summary': 'Demonstrates how to create a simple calculator using java, emphasizing the ease of making changes and offering the code for reference, while encouraging viewer engagement with the content.', 'duration': 43.033, 'highlights': ['The chapter demonstrates how to create a simple calculator using Java The speaker provides a tutorial on creating a simple calculator using Java.', 'Emphasizes the ease of making changes The speaker highlights the ease of making changes to the code, suggesting that it is easy to update or add new features.', 'Offers the code for reference The speaker offers to share the code for the simple calculator with the audience for reference and further learning.', 'Encourages viewer engagement with the content The speaker encourages viewers to engage by liking the video, commenting, and subscribing, aiming for increased interaction and community building.']}], 'duration': 263.261, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/dfhmTyRTCSQ/pics/dfhmTyRTCSQ1791559.jpg', 'highlights': ['Emphasizes the ease of making changes The speaker highlights the ease of making changes to the code, suggesting that it is easy to update or add new features.', 'Encourages viewer engagement with the content The speaker encourages viewers to engage by liking the video, commenting, and subscribing, aiming for increased interaction and community building.', 'Implemented functionality to retrieve text from the text field and store it as a double value using the parseDouble method.', "The chapter illustrates the process of flipping the sign of a variable by multiplying it by negative one, exemplified by the code 'temp *= -1'.", 'Created a negative button with specific bounds and dimensions, x=50, y=430, width=100 pixels, height=50 pixels, and added it to the frame.']}], 'highlights': ['The chapter covers the process of creating a basic calculator, including code snippets for adding, subtracting, multiplying, and dividing numbers, as well as handling the equals button functionality using parseDouble and switch statement.', 'The chapter explains how to create a simple calculator program in Java The video teaches how to create a simple calculator program using Java.', 'The chapter covers the creation of different function buttons, including addition, subtraction, multiplication, division, decimal, equals, delete, and clear, and adds them to an array named function buttons.', 'The program sets the frame size to 420 by 550, allowing for a larger height of 550 for the calculator.', 'The chapter begins by instantiating a J text field to hold numbers and results, setting its bounds with x position 50, y position 25, width 300, and height 50.', 'The chapter covers the steps to set up a new Java project The tutorial covers the steps to create a new Java project and set it up for the calculator program.', 'The chapter explains the creation of a constructor and the declaration of essential components like Jframe, Jtextfield, and Jbuttons for the calculator program.', 'The chapter covers the creation of different function buttons, including addition, subtraction, multiplication, division, decimal, equals, delete, and clear, and adds them to an array named function buttons.', 'The chapter covers the process of creating a basic calculator, including code snippets for adding, subtracting, multiplying, and dividing numbers, as well as handling the equals button functionality using parseDouble and switch statement.', 'The chapter covers the process of creating a basic calculator, including code snippets for adding, subtracting, multiplying, and dividing numbers, as well as handling the equals button functionality using parseDouble and switch statement.']}