October 2011
Beginner
432 pages
10h 18m
English
Content preview from Sams Teach Yourself Java™ in 24 Hours, Sixth Edition
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Compiling the Program into a Class File
Before you can run a Java program, you must compile it. When you compile a program, the instructions given to the computer in the program are converted into a form the computer can better understand.
Note
The Java compiler speaks up only when there’s an error to complain about. If you compile a program successfully without any errors, nothing happens in response. This is a little anticlimactic. When I was starting out as a Java programmer, I was hoping successful compilation would be met with a grand flourish of celebratory horns.
NetBeans compiles programs automatically as they are saved. If you typed everything as shown in Listing 2.2, the program compiles successfully.
A compiled version of the program, ...
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