Java in a Nutshell, 5th Edition [Electronic resources] نسخه متنی

This interface defines an API for
converting a file or stream in Pack200 (or gzipped Pack200) format
into a JAR file in the form of a JarOutputStream.
Obtain an Unpacker object with the
Pack200.newUnpacker( ) method. Before using an
unpacker, you may configure it by setting properties in the
Map returned by the properties(
) method. Unpack a JAR file with the unpack(
) method, specifying a File or stream of
packed bytes. Monitor the progress of the unpacker by querying the
PROGRESS key in the Map
returned by properties( ). The value should be an
Integer representing a completion percentage
between 0 and 100. If you want to be notified of changes to the
PROGRESS property, register a
java.beans.PropertyChangeListener with
addPropertyChangeListener( ). See also the

unpack200 command in Chapter 8.

public interface

Pack200.Unpacker {
// Public Constants
public static final String

DEFLATE_HINT ; ="unpack.deflate.hint"
public static final String

FALSE ; ="false"
public static final String

KEEP ; ="keep"
public static final String

PROGRESS ; ="unpack.progress"
public static final String

TRUE ; ="true"
// Event Registration Methods (by event name)
void

addPropertyChangeListener (java.beans.PropertyChangeListener

listener );
void

removePropertyChangeListener (java.beans.PropertyChangeListener

listener );
// Public Instance Methods
java.util.SortedMap<String,String>

properties ( );
void

unpack (java.io.InputStream

in , JarOutputStream

out ) throws java.io.IOException;
void

unpack (java.io.File

in , JarOutputStream

out ) throws java.io.IOException;
}

Returned By

Pack200.newUnpacker( )