IMP stands for the Information Module Profile. It is a specification put out by Sun Microsystems for the use of Java on embedded devices with very limited displays. It is a subset of the Mobile Information Device Profile.
The core APIs are defined by the underlying Configuration CLDC.
Contains the Java 2 Platform, Micro Edition specific classes used for I/O operations.
Provides a form of persistent storage for Java 2 Platform, Micro Edition.
Contains the base classes for Java 2 Platform, Micro Edition applications.