This class is a factory for creating Pack200.Packer and Pack200.Unpacker objects for compressing JAR files to Pack200 archives and for uncompresssing those archives back into JAR files.

public abstract class Pack200 {
// No Constructor
// Nested Types
     public interface Packer; 
     public interface Unpacker; 
// Public Class Methods
     public static Pack200.Packer newPacker( );                     synchronized
     public static Pack200.Unpacker newUnpacker( );  
}