Read some data from a gzip file : GZIP « File Input Output « Java

1. Java
2. File Input Output
3. GZIP

Read some data from a gzip file

  
/*
 * Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
 * All rights reserved. Software written by Ian F. Darwin and others.
 * $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * Java, the Duke mascot, and all variants of Sun's Java "steaming coffee
 * cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,
 * pioneering role in inventing and promulgating (and standardizing) the Java 
 * language and environment is gratefully acknowledged.
 * 
 * The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
 * inventing predecessor languages C and C++ is also gratefully acknowledged.
 */

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.zip.GZIPInputStream;

/**
 * Read some data from a gzip file.
 * 
 * @author Ian F. Darwin, http://www.darwinsys.com/
 * @version $Id: ReadGZIP.java,v 1.4 2004/03/06 20:54:38 ian Exp $
 */
public class ReadGZIP {
  public static void main(String[] argv) throws IOException {
    String FILENAME = "file.txt.gz";

    // Since there are 4 constructor calls here, I wrote them out in full.
    // In real life you would probably nest these constructor calls.
    FileInputStream fin = new FileInputStream(FILENAME);
    GZIPInputStream gzis = new GZIPInputStream(fin);
    InputStreamReader xover = new InputStreamReader(gzis);
    BufferedReader is = new BufferedReader(xover);

    String line;
    // Now read lines of text: the BufferedReader puts them in lines,
    // the InputStreamReader does Unicode conversion, and the
    // GZipInputStream "gunzip"s the data from the FileInputStream.
    while ((line = is.readLine()) != null)
      System.out.println("Read: " + line);
  }
}




           
         
    
  

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