A frame with a text area to show the contents of a file inside a ZIP archive : Zip Tar File « File Input Output « Java

Home
Java
1.2D Graphics GUI
2.3D
3.Advanced Graphics
4.Ant
5.Apache Common
6.Chart
7.Class
8.Collections Data Structure
9.Data Type
10.Database SQL JDBC
11.Design Pattern
12.Development Class
13.EJB3
14.Email
15.Event
16.File Input Output
17.Game
18.Generics
19.GWT
20.Hibernate
21.I18N
22.J2EE
23.J2ME
24.JDK 6
25.JNDI LDAP
26.JPA
27.JSP
28.JSTL
29.Language Basics
30.Network Protocol
31.PDF RTF
32.Reflection
33.Regular Expressions
34.Scripting
35.Security
36.Servlets
37.Spring
38.Swing Components
39.Swing JFC
40.SWT JFace Eclipse
41.Threads
42.Tiny Application
43.Velocity
44.Web Services SOA
45.XML
Java » File Input Output » Zip Tar FileScreenshots 
A frame with a text area to show the contents of a file inside a ZIP archive
   
/*
   This program is a part of the companion code for Core Java 8th ed.
   (http://horstmann.com/corejava)

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.List;
import java.util.Scanner;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

import javax.swing.JComboBox;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingWorker;

/**
 @version 1.32 2007-06-22
 @author Cay Horstmann
 */
public class ZipTest
{
   public static void main(String[] args)
   {
      EventQueue.invokeLater(new Runnable()
         {
            public void run()
            {
               ZipTestFrame frame = new ZipTestFrame();
               frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
               frame.setVisible(true);
            }
         });
   }
}

/**
 * A frame with a text area to show the contents of a file inside a ZIP archive, a combo box to
 * select different files in the archive, and a menu to load a new archive.
 */
class ZipTestFrame extends JFrame
{
   public ZipTestFrame()
   {
      setTitle("ZipTest");
      setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);

      // add the menu and the Open and Exit menu items
      JMenuBar menuBar = new JMenuBar();
      JMenu menu = new JMenu("File");

      JMenuItem openItem = new JMenuItem("Open");
      menu.add(openItem);
      openItem.addActionListener(new ActionListener()
         {
            public void actionPerformed(ActionEvent event)
            {
               JFileChooser chooser = new JFileChooser();
               chooser.setCurrentDirectory(new File("."));
               int r = chooser.showOpenDialog(ZipTestFrame.this);
               if (r == JFileChooser.APPROVE_OPTION)
               {
                  zipname = chooser.getSelectedFile().getPath();
                  fileCombo.removeAllItems();
                  scanZipFile();
               }
            }
         });

      JMenuItem exitItem = new JMenuItem("Exit");
      menu.add(exitItem);
      exitItem.addActionListener(new ActionListener()
         {
            public void actionPerformed(ActionEvent event)
            {
               System.exit(0);
            }
         });

      menuBar.add(menu);
      setJMenuBar(menuBar);

      // add the text area and combo box
      fileText = new JTextArea();
      fileCombo = new JComboBox();
      fileCombo.addActionListener(new ActionListener()
         {
            public void actionPerformed(ActionEvent event)
            {
               loadZipFile((StringfileCombo.getSelectedItem());
            }
         });

      add(fileCombo, BorderLayout.SOUTH);
      add(new JScrollPane(fileText), BorderLayout.CENTER);
   }

   /**
    * Scans the contents of the ZIP archive and populates the combo box.
    */
   public void scanZipFile()
   {
      new SwingWorker<Void, String>()
         {
            protected Void doInBackground() throws Exception
            {
               ZipInputStream zin = new ZipInputStream(new FileInputStream(zipname));
               ZipEntry entry;
               while ((entry = zin.getNextEntry()) != null)
               {
                  publish(entry.getName());
                  zin.closeEntry();
               }
               zin.close();
               return null;
            }

            protected void process(List<String> names)
            {
               for (String name : names)
                  fileCombo.addItem(name);

            }
         }.execute();
   }

   /**
    * Loads a file from the ZIP archive into the text area
    @param name the name of the file in the archive
    */
   public void loadZipFile(final String name)
   {
      fileCombo.setEnabled(false);
      fileText.setText("");
      new SwingWorker<Void, Void>()
         {
            protected Void doInBackground() throws Exception
            {
               try
               {
                  ZipInputStream zin = new ZipInputStream(new FileInputStream(zipname));
                  ZipEntry entry;

                  // find entry with matching name in archive
                  while ((entry = zin.getNextEntry()) != null)
                  {
                     if (entry.getName().equals(name))
                     {
                        // read entry into text area
                        Scanner in = new Scanner(zin);
                        while (in.hasNextLine())
                        {
                           fileText.append(in.nextLine());
                           fileText.append("\n");
                        }
                     }
                     zin.closeEntry();
                  }
                  zin.close();
               }
               catch (IOException e)
               {
                  e.printStackTrace();
               }
               return null;
            }

            protected void done()
            {
               fileCombo.setEnabled(true);
            }
         }.execute();
   }

   public static final int DEFAULT_WIDTH = 400;
   public static final int DEFAULT_HEIGHT = 300;

   private JComboBox fileCombo;
   private JTextArea fileText;
   private String zipname;
}

   
    
    
  
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.Extract zip file to destination folder
53.Return the first directory of this archive. This is needed to determine the plugin directory
54.Makes a zip file named xmlFileName from xmlURL at path
55.Unzipps a zip file placed at zipURL to path
56.A single checksum calculation for multiple files
57.Put file To Zip File
58.Provides both writing and reading from a file which is transparently compressed in Zip
59.TarInputStream reads a UNIX tar archive as an InputStream
60.TarOutputStream writes a UNIX tar archive as an OutputStream
61.Package files utility
62.Zip Compare
63.Unpack a segment from a zip
64.Unpack a zip file
65.Unzip file to a directory
66.Zip a list of file into one zip file.
67.Validate that an archive contains a named entry
68.Compress object and decompress
69.Util for extracting *.jar, *.war and *.zip archives.
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.