Java programmer must read: Basic (9)

Program | Programmer java programmer must read: Basic time: 2001/09/13 13:31 Author: ZSC Pacific Network College

　
2.8 Problem and practice of object-oriented concepts

The tutorials in this section test your understanding of objects, classes, messages, and so on, and we do this by doing some exercises and answering some questions.


2.8.1 problem

You can use API documentation to answer these questions:


The ClickMe applet uses color.red to set the paint color to red. What other colors can be used like this?


How do I set the color to purple (purple)?


2.8.2 Practice

Now, use the knowledge you learned from the API documentation to modify the ClickMe applet. In order to compile this program, you also need to Spot.java files. The specific modifications are as follows:


Modify this applet to draw a green box instead of a red dot.


Modify this applet to display your name in purple instead of a red dot.