Reads a serialized object from a file that has been compressed using gzip.

      
/* Copyright (C) 2003 Univ. of Massachusetts Amherst, Computer Science Dept.
   This file is part of "MALLET" (MAchine Learning for LanguagE Toolkit).
   http://www.cs.umass.edu/~mccallum/mallet
   This software is provided under the terms of the Common Public License,
   version 1.0, as published by http://www.opensource.org.  For further
   information, see the file `LICENSE' included with this distribution. */

//package cc.mallet.util;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.zip.GZIPOutputStream;

/**
 * 
 * 
 * @author <a href="mailto:casutton@cs.umass.edu">Charles Sutton</a>
 * @version $Id: ArrayUtils.java,v 1.1 2007/10/22 21:37:40 mccallum Exp $
 */
public class Util {


    /**
     * Reads a serialized object from a file that has been compressed using gzip.
     *  You probably want to use {@link #readObject} instead, because it will automatically guess
     *  from the extension whether the file is compressed, and call this method if necessary.
     * @param f Compressed file to read object from
     * @see #readObject
     */
    public static Object readGzippedObject (File f)
    {
      try {
        ObjectInputStream ois = new ObjectInputStream (new BufferedInputStream (new GZIPInputStream (new FileInputStream(f))));
        Object obj = ois.readObject();
        ois.close ();
        return obj;
      }
      catch (IOException e) {
        throw new RuntimeException (e);
      } catch (ClassNotFoundException e) {
        throw new RuntimeException (e);
      }
    }

}

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Reads a serialized object from a file that has been compressed using gzip. : Serialization « File Input Output « Java

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