Pack200.Packer

Pack200.Packer

java.util.jar

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Java 5.0

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( )