CS Problem Solving and Object Oriented Programming Spring 2019

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CS Problem Solving and Object Oriented Programming Spring 2019
CS Problem Solving and Object Oriented Programming Spring 2019
CS Problem Solving and Object Oriented Programming Spring 2019
CS Problem Solving and Object Oriented Programming Spring 2019
CS Problem Solving and Object Oriented Programming Spring 2019
CS Problem Solving and Object Oriented Programming Spring 2019
CS Problem Solving and Object Oriented Programming Spring 2019
CS Problem Solving and Object Oriented Programming Spring 2019
CS Problem Solving and Object Oriented Programming Spring 2019
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Presentation transcript:

CS 18000 Problem Solving and Object Oriented Programming Spring 2019 Section LE2 Week 10: Lecture 21, March 27. 2019 Slides updated: 9:30am, March 27, 2019 Aditya Mathur Professor, Department of Computer Science Purdue University West Lafayette, IN, USA https://www.cs.purdue.edu/homes/apm/courses/CS180Spring2019/

©Aditya Mathur. CS 180. Fall 2019.Week 12 Today (Continued) Interaction through Graphical User Interfaces (GUIs) JFileChooser JOptionPane (extend and complete the program from Monday) 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

©Aditya Mathur. CS 180. Fall 2019.Week 12 JFileChooser 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

©Aditya Mathur. CS 180. Fall 2019.Week 12 JFileChooser Enables navigation across the file system on your computer Creates a dialog Modal dialog https://docs.oracle.com/javase/tutorial/uiswing/components/filechooser.html 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

©Aditya Mathur. CS 180. Fall 2019.Week 12 JFileChooser: The dialog JFileChooser fc=new JFileChooser(); // Create a file chooser object int response=fc.showOpenDialog(null); // Open the (open) dialog and check the status of user action parent int response=fc.showSaveDialog(null); // Open the (save) dialog and check the status of user action 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

©Aditya Mathur. CS 180. Fall 2019.Week 12 JFileChooser: Sample (Open) dialog 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

©Aditya Mathur. CS 180. Fall 2019.Week 12 JFileChooser: Check user response // If the user has selected a file to open then the return value will be equal to JFileChooser.APPROVE_OPTION. if (response==JFileChooser.APPROVE_OPTION){ File selectedFile=fc.getAbsolutePath(); 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

©Aditya Mathur. CS 180. Fall 2019.Week 12 JFileChooser: Obtain file path or name File fileObject=fc.getSelectedFile(); // Get selected file object String filePath=selectedFile.getAbsolutePath(); // Get file path // Get file name String fileName=selectedFile.getName(); 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

©Aditya Mathur. CS 180. Fall 2019.Week 12 JFileChooser: Customization fc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY); // Show only directories // Filter 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

Live demo [Pre-programmed] 180PizzaGrab 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

©Aditya Mathur. CS 180. Fall 2019.Week 12 Select pizza data file 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

©Aditya Mathur. CS 180. Fall 2019.Week 12 Select pizza 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

©Aditya Mathur. CS 180. Fall 2019.Week 12 Select size 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

©Aditya Mathur. CS 180. Fall 2019.Week 12 Select payment type 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

©Aditya Mathur. CS 180. Fall 2019.Week 12 Eat! 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

©Aditya Mathur. CS 180. Fall 2019.Week 12 Quiz: 03/27/2019 03/27/2019 ©Aditya Mathur. CS 180. Fall 2019.Week 12

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