Read Some Data from a Gzip File
From Java Example Source Code
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[edit] Overview - Read Some Data from a Gzip File
This is a example of Java program.
[edit] Java Source Code
- Package: com.darwinsys
- File: ReadGZIP.java
- File used by the example: file.txt.gz
package com.darwinsys; /* * 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 = "c:\\file.txt.gz"; //modified by Code Panda, 20080807 // 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); } }
[edit] What Result You Can Get
Run the program, you will get:
Read: Hello, Java Exampleshow! Read: Read: http://java.exampleshow.com
[edit] Required External Libraries, Files for this Java Example
In order to run this example, you need a GZip file, click file.txt.gz to download it and save it in your C: disk, as C:\file.txt.gz.
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[edit] Question & Answer
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