Java

When someone talks about Java they are really referring to three things:

JavaLanguage

The syntax and structure that makes up code.

JavaVirtualMachine

The execution environment that abstracts away the specifics of a CPU or memory.

JavaAPI^?

The large library of code guaranteed to be available.

Combined those make up the JavaPlatform^? such as Java 1.1 or Java 1.4.

Discussion about Java