Question: Study the BagApplet from Appendix I and write an expanded version that has three bags and buttons to activate any method of any bag. Also

Study the BagApplet from Appendix I and write an expanded version that has three bags and buttons to activate any method of any bag. Also include a button that will carry out an action such as:

b1 = IntArrayBag.union(b2, b3).


Appendix I

It’s useful to have a small interactive test program to help you test class methods. Such a program can be written as a Java applet, which is a Java program written in a special format to have a graphical user interface. The graphical user interface is also called a GUI (pronounced “gooey”), and it allows a user to interact with a program by clicking the mouse, typing information into boxes, and performing other familiar actions. With a Java applet, GUIs are easy to create, even if you’ve never run into such goo before.

This appendix, which shows one simple pattern for developing such applets, is online at: http://www.cs.colorado.edu/~main/javasupp/applets.pdf.

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