Java compression and decompression method with list object as an example

 /**
  * Feature Description: Convert list object compression to byte[]
  * @param data
  * @return
  * @throws IOException
  */
 public static byte[] Compresslist (List data) throws IOException {
   Byte[] Result=null;
  //The output stream used by serialization
  bytearrayoutputstream o = new Bytearrayoutputstream ();
 &NBSP
  gzipoutputstream gzout=new gzipoutputstream (o);
 &NBSP
  //Create object serialization output stream
  objectoutputstream out = new ObjectOutputStream (gzout);
  out.writeobject (data);
  out.flush ();
  out.close ();
  gzout.close ();
  result=o.tobytearray ();
  o.close ();
  return result;

 }
 /**
  * Feature Description: Extract byte[] data into List object on top process reverse
  * @param data
  * @return
  * @ Throws IOException
  */
 public static List uncompresslist (byte[) data throws IOException {
 & nbsp List Result=null;
  
  bytearrayinputstream i = new Bytearrayinputstream (data);
 &NBSP
  gzipinputstream gzin=new gzipinputstream (i);
 &NBSP
  objectinputstream in = new ObjectInputStream (Gzin);
  
  try {
   result= (List) in.readobject ();
 &NBSP} catch (ClassNotFoundException e) {
   //TODO auto-generated catch block
    e.printstacktrace ();
  }
  
  i.close ();
  gzin.close ();
  in.close ();
  return result;
 }