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

This interface defines the API for an
object that can convert a JAR file to an output stream in Pack200 (or
gzipped Pack200) format. Obtain a Packer object
with the Pack200.newPacker( ) factory method.
Configure the packer before using it by setting properties in the
Map returned by the properties(
) method. The constants defined by this class represent the
names (and in some cases values) of properties that can be set. Pack
a JAR file by passing JarFile or
JarInputStream to a pack( )
method along with the byte output stream to which the packed
representation should be written. You can monitor the progress of the
packer engine by querying the PROGRESS property in
the properties( ) map. The value is the completion
percentage as an integer between 0 and 100 (or -1 to indicate a stall
or error.) If you want to be notified of changes to the
PROGRESS property, register a
java.beans.PropertyChangeListener with
addPropertyChangeListener( ). See also the

pack200 command in Chapter 8.

public interface

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

CLASS_ATTRIBUTE_PFX ; ="pack.class.attribute."
public static final String

CODE_ATTRIBUTE_PFX ; ="pack.code.attribute."
public static final String

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

EFFORT ; ="pack.effort"
public static final String

ERROR ; ="error"
public static final String

FALSE ; ="false"
public static final String

FIELD_ATTRIBUTE_PFX ; ="pack.field.attribute."
public static final String

KEEP ; ="keep"
public static final String

KEEP_FILE_ORDER ; ="pack.keep.file.order"
public static final String

LATEST ; ="latest"
public static final String

METHOD_ATTRIBUTE_PFX ; ="pack.method.attribute."
public static final String

MODIFICATION_TIME ; ="pack.modification.time"
public static final String

PASS ; ="pass"
public static final String

PASS_FILE_PFX ; ="pack.pass.file."
public static final String

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

SEGMENT_LIMIT ; ="pack.segment.limit"
public static final String

STRIP ; ="strip"
public static final String

TRUE ; ="true"
public static final String

UNKNOWN_ATTRIBUTE ; ="pack.unknown.attribute"
// Event Registration Methods (by event name)
void

addPropertyChangeListener (java.beans.PropertyChangeListener

listener );
void

removePropertyChangeListener (java.beans.PropertyChangeListener

listener );
// Public Instance Methods
void

pack (JarInputStream

in , java.io.OutputStream

out ) throws java.io.IOException;
void

pack (JarFile

in , java.io.OutputStream

out ) throws java.io.IOException;
java.util.SortedMap<String,String>

properties ( );
}

Returned By

Pack200.newPacker( )