DES加密算法JAVA代码

import java.awt.*;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.security.Key;

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;

public class DESDemo extends Frame{
private Label l;
private Button b2,b3;
private TextField tf1,tf2,tf3;
private Panel pan1,pan2,pan3;
byte[] plainText,cipherText,newPlainText;
KeyGenerator KeyGen;
Cipher cipher;
Key key;
String mingwen1,miwen,mingwen2;
public static void main(String[] args){
DESDemo bb = new DESDemo();
bb.lanchFrame();
}
private void lanchFrame()
{
Frame f = new Frame();
f.setTitle("DES加密解密算法");
f.setLocation(50,50);