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Java > Java SE, EE, ME > java > util > jar > JarOutputStream

java.util.jar
Class JarOutputStream

java.lang.Object
  extended by java.io.OutputStream
      extended by java.io.FilterOutputStream
          extended by java.util.zip.DeflaterOutputStream
              extended by java.util.zip.ZipOutputStream
                  extended by java.util.jar.JarOutputStream
All Implemented Interfaces:
Closeable, Flushable
See Also:
Top Examples, Source Code, Manifest 
public static final int CENATT
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public static final int CENATX
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public static final int CENCOM
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public static final int CENCRC
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public static final int CENDSK
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public static final int CENEXT
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public static final int CENFLG
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public static final int CENHDR
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public static final int CENHOW
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public static final int CENLEN
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public static final int CENNAM
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public static final int CENOFF
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public static final long CENSIG
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public static final int CENSIZ
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public static final int CENTIM
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public static final int CENVEM
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public static final int CENVER
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public static final int ENDCOM
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public static final int ENDHDR
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public static final int ENDOFF
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public static final long ENDSIG
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public static final int ENDSIZ
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public static final int ENDSUB
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public static final int ENDTOT
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public static final int EXTCRC
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public static final int EXTHDR
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public static final int EXTLEN
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public static final long EXTSIG
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public static final int EXTSIZ
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public JarOutputStream(OutputStream out)
                throws IOException
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[1043]Read file and write it to the jar
By Anonymous on 2005/02/01 08:41:54  Rate
    String [  ]  xmits = new String [ 1 ] ; 
     xmits [ 0 ]  = "xmit.jar"; 
     JarOutputStream jar = new JarOutputStream (  
         new FileOutputStream ( scannerDir + "/jar/" + xmits [ 0 ]  ) , new Manifest (  )  ) ; 
  
  
     byte [  ]  buffer = new byte [ 1024 ] ; 
     int count; 
  
  
     for  ( int i = 1; i  <  files.length; i++ )   {  
       InputStream is = new BufferedInputStream (  new FileInputStream ( scannerDir + "/" + files [ i ]  )  ) ; 
       JarEntry entry = new JarEntry ( files [ i ]  ) ; 
       jar.putNextEntry ( entry ) ; 
  
  
       // Read the file the file and write it to the jar. 
       while  (  ( count = is.read ( buffer )  )  != -1 )   {  
         jar.write ( buffer, 0, count ) ; 
        }  
      }  
     jar.close (  ) ;
public JarOutputStream(OutputStream out,
                       Manifest man)
                throws IOException
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public static final int LOCCRC
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public static final int LOCEXT
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public static final int LOCFLG
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public static final int LOCHDR
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public static final int LOCHOW
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public static final int LOCLEN
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public static final int LOCNAM
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public static final long LOCSIG
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public static final int LOCSIZ
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public static final int LOCTIM
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public static final int LOCVER
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public void putNextEntry(ZipEntry ze)
                  throws IOException
See Also:
ZipException, ZipOutputStream
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[129]Copy files from one JAR to another JAR
By Milton on 2005/02/01 08:42:20  Rate
 JarOutputStream jarOut = new JarOutputStream ( new FileOutputStream (  filename  ) , 
                                                  manifest ) ; 
  
  
  
 We must write every entry from the input JAR to the output JAR, so iterate over the entries: 
  
  
  
     //Create a read buffer to transfer data from the input 
  
  
     byte [  ]  buf = new byte [ 4096 ] ; 
  
  
     //Iterate the entries 
  
  
     JarEntry entry; 
     while  (  ( entry = jarIn.getNextJarEntry (  )  )  != null )   {  
         //Exclude the manifest file from the old JAR 
  
  
         if  ( "META-INF/MANIFEST.MF".equals ( entry.getName (  )  )  )  continue; 
  
  
         //Write the entry to the output JAR 
  
  
         jarOut.putNextEntry ( entry ) ; 
         int read; 
         while  (  ( read = jarIn.read ( buf )  )  != -1 )   {  
             jarOut.write ( buf, 0, read ) ; 
          }  
  
  
         jarOut.closeEntry (  ) ; 
      }  
  
  
     //Flush and close all the streams 
  
  
     jarOut.flush (  ) ; 
     jarOut.close (  ) ; 
  
  
  
  
 
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