The Java Virtual Machine - the environment within which Java byte-codes are executed.
JDK
The Java Development Kit - used by programmers to build Java applets and applications.
JRE
The Java Runtime Environment - must be present to run Java programs in addition to the VM.
Project Java Activator
Provides a way to make sure a given VM is present and used to run your applet in a browser.
API
Application Programming Interface
JFC
Java Foundation Classes
JDBC
Java DataBase Classes
IDE
Interactive Development Environment
MP
Multi-Processing
GC
Garbage Collection - the act of retrieving memory that is no longer used. In most compiled languages, the programmer must explicitly dereference memory. Java uses an algorithm to determine if memory has gone out of scope and can be freed.