Running Example Programs

11. End of the Chapter


Answer

Once it was classified as a planet, and the program was correct.

Now, it is not, and the program is not correct.

End of the Chapter

It may seem strange that a correctly written program can become buggy without being altered. But this is actually common. Circumstances external to a program often change, so the program must be revised. Much of what professional programmers do is program maintenance: keeping programs up to date with changing requirements.

You have reached the end of the chapter. If you are unclear about it, take a break, and then try again. Or find a friend that knows how to do this, perhaps the same friend you annoyed at the end of the previous chapter. This stuff is much easier after you've done it a few times.

You may wish to review the following. Click on a subject that interests you to go to where it was discussed.

The next chapter will discuss the beginning elements of the Java language (at last!).