Java Source Codes

Zip file test

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import java.util.zip.*;
import javax.swing.*;
import javax.swing.filechooser.FileFilter;

public class ZipTest extends JFrame
implements ActionListener
{ public ZipTest()
{ setTitle("ZipTest");
setSize(300, 400);

JMenuBar mbar = new JMenuBar();
JMenu m = new JMenu("File");
openItem = new JMenuItem("Open");
openItem.addActionListener(this);
m.add(openItem);
exitItem = new JMenuItem("Exit");
exitItem.addActionListener(this);
m.add(exitItem);
mbar.add(m);

fileList.addActionListener(this);

Container contentPane = getContentPane();
contentPane.add(mbar, "North");
contentPane.add(fileList, "South");
contentPane.add(fileText, "Center");
}

public void actionPerformed(ActionEvent evt)
{ Object source = evt.getSource();
if (source == openItem)
{ JFileChooser chooser = new JFileChooser();
chooser.setCurrentDirectory(new File("."));
chooser.setFileFilter(new FileFilter()
{ public boolean accept(File f)
{ return f.getName().toLowerCase()
.endsWith(".zip")
'' f.isDirectory();
}
public String getDescription()
{ return "ZIP Files"; }
});
int r = chooser.showOpenDialog(this);
if (r == JFileChooser.APPROVE_OPTION)
{ zipname = chooser.getSelectedFile().getPath();
scanZipFile();
}
}
else if (source == exitItem) System.exit(0);
else if (source == fileList)
loadZipFile((String)fileList.getSelectedItem());
}

public void scanZipFile()
{ fileList.removeAllItems();
try
{ ZipInputStream zin = new ZipInputStream(new
FileInputStream(zipname));
ZipEntry entry;
while ((entry = zin.getNextEntry()) != null)
{ fileList.addItem(entry.getName());
zin.closeEntry();
}
zin.close();
}
catch(IOException e) {}
}

public void loadZipFile(String name)
{ try
{ ZipInputStream zin = new ZipInputStream(new
FileInputStream(zipname));
ZipEntry entry;
fileText.setText("");
while ((entry = zin.getNextEntry()) != null)
{ if (entry.getName().equals(name))
{ BufferedReader in = new BufferedReader(new
InputStreamReader(zin));
String s;
while ((s = in.readLine()) != null)
fileText.append(s + "\n");
}
zin.closeEntry();
}
zin.close();
}
catch(IOException e) {}
}

public static void main(String[] args)
{ Frame f = new ZipTest();
f.show();
}

private JComboBox fileList = new JComboBox();
private JTextArea fileText = new JTextArea();
private JMenuItem openItem;
private JMenuItem exitItem;
private String zipname;
}

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