Internal Compilation

See Also 

The Internal Compilation compiler type is derived from the standard javac and is run within the same virtual machine as the IDE. The advantages of running javac internally are speed, changes in the class structure that appear immediately in the Filesystems window, and a status bar that provides information on the dependent classes that are compiled.

To view or change the properties of Internal Compilation, open the Options window, expand Building and expand  Compiler Types and select Internal Compilation. When you change the value of a property, your change affects all classes that use Internal Compilation.

You can set the following properties:

Properties

Expert

For more information on the javac compiler, see:

http://java.sun.com/j2se/1.4/docs/tooldocs/win32/javac.html 
See Also
External Compiler
Jikes Compilation
Building With Ant

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