Extract zip file to destination folder : Zip Tar File « File Input Output « Java






Extract zip file to destination folder

       
//The contents of this file are subject to the Mozilla Public License Version 1.1
//(the "License"); you may not use this file except in compliance with the 
//License. You may obtain a copy of the License at http://www.mozilla.org/MPL/
//
//Software distributed under the License is distributed on an "AS IS" basis,
//WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 
//for the specific language governing rights and
//limitations under the License.
//
//The Original Code is "The Columba Project"
//
//The Initial Developers of the Original Code are Frederik Dietz and Timo Stich.
//Portions created by Frederik Dietz and Timo Stich are Copyright (C) 2003. 
//
//All Rights Reserved.


import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

/**
 * Zip archive operations are handled by this class.
 * 
 * @author fdietz
 */
public class ZipFileIO {

  /**
   * No instances needed.
   */
  private ZipFileIO() {
    // don't instantiate this class
  }

  /**
   * Extract zip file to destination folder.
   * 
   * @param file
   *            zip file to extract
   * @param destination
   *            destinatin folder
   */
  public static void extract(File file, File destination) throws IOException {
    ZipInputStream in = null;
    OutputStream out = null;
    try {
      // Open the ZIP file
      in = new ZipInputStream(new FileInputStream(file));

      // Get the first entry
      ZipEntry entry = null;

      while ((entry = in.getNextEntry()) != null) {
        String outFilename = entry.getName();

        // Open the output file
        if (entry.isDirectory()) {
          new File(destination, outFilename).mkdirs();
        } else {
          out = new FileOutputStream(new File(destination,
              outFilename));

          // Transfer bytes from the ZIP file to the output file
          byte[] buf = new byte[1024];
          int len;

          while ((len = in.read(buf)) > 0) {
            out.write(buf, 0, len);
          }

          // Close the stream
          out.close();
        }
      }
    } finally {
      // Close the stream
      if (in != null) {
        in.close();
      }
      if (out != null) {
        out.close();
      }
    }
  }

  /**
   * Return the first directory of this archive. This is needed to determine
   * the plugin directory.
   * 
   * @param zipFile
   * @return <class>File</class> containing the first entry of this archive
   */
  public static File getFirstFile(File zipFile) throws IOException {
    ZipInputStream in = null;
    try {
      // Open the ZIP file
      in = new ZipInputStream(new FileInputStream(zipFile));

      // Get the first entry
      ZipEntry entry = null;

      while ((entry = in.getNextEntry()) != null) {
        String outFilename = entry.getName();

        if (entry.isDirectory()) {
          return new File(outFilename);
        }
      }
    } finally {
      if (in != null) {
        // Close the stream
        in.close();
      }
    }
    return null;
  }
}

   
    
    
    
    
    
    
  








Related examples in the same category

1.Extract contents of a zip file
2.List the contents of a zip file
3.Read entries in a zip / compressed file
4.Decompress a zip file using ZipInputStream
5.Decompress a zip file using ZipFile
6.Create checksum for a zip file
7.Read a zip file checksum value
8.Create a zip file with java.util.zip package
9.Extract file/files from a zip file
10.Read files within a zip file
11.Retrieve a compressed file from a ZIP file
12.Retrieve the contents of a ZIP file
13.Making a zip file of directory including its subdirectories recursively
14.Displaying contents of a compressed zip file
15.Compress a Byte Array
16.Decompress a Byte Array
17.Read zip file
18.Write Zip file
19.The java.util.zip package can be used to create a checksum.
20.Read the content of a zip file ZipFile
21.List the entries of a zip file
22.Compressing Streams: Zipper, Java example
23.Compressing Streams: Parity Checksum
24.Compressing Streams: File Summer
25.Create a simple ZIP File: not retain any directory path information about the files.
26.Decompress a ZIP file.
27.Decompressing a Byte Array
28.Zip unzip byte array
29.Creating a ZIP File
30.Listing the Contents of a ZIP File
31.Retrieving a Compressed File from a ZIP File
32.Calculating the Checksum of a Byte Array (Compute Adler-32 checksum)
33.Compute CRC-32 checksum
34.Calculating the Checksum of a File
35.Compress string(byte array) by Deflater
36.Use Java code to zip a folder
37.Uses Zip compression to compress any number of files given on the command line
38.Load zip file and scan zip file
39.Reading the Contents of a ZIP File
40.UnZip -- print or unzip a JAR or PKZIP file using java.util.zip
41.Tape Archive Lister: Tar file
42.Compressing a Byte Array
43.Tar file stream
44.Tar file and untar file
45.bzip source code
46.Unpack an archive from a URL
47.Compare two zip files
48.Determine whether a file is a ZIP File.
49.Zip up a directory
50.Check sum for a path
51.Check sum for an InputStream
52.Return the first directory of this archive. This is needed to determine the plugin directory
53.Makes a zip file named xmlFileName from xmlURL at path
54.Unzipps a zip file placed at zipURL to path
55.A single checksum calculation for multiple files
56.Put file To Zip File
57.Provides both writing and reading from a file which is transparently compressed in Zip
58.TarInputStream reads a UNIX tar archive as an InputStream
59.TarOutputStream writes a UNIX tar archive as an OutputStream
60.Package files utility
61.Zip Compare
62.Unpack a segment from a zip
63.Unpack a zip file
64.Unzip file to a directory
65.Zip a list of file into one zip file.
66.Validate that an archive contains a named entry
67.A frame with a text area to show the contents of a file inside a ZIP archive
68.Compress object and decompress
69.Util for extracting *.jar, *.war and *.zip archives.