Exercise 3 --- Combination Lock

/* Programmer: Maribelle Lacno
  * Program name: combinationLock
  * Subject: IT134_Computer Programming 3 
  * Instructor: Mr. Dony Dongiapon 
  * Date Started: 03/16/09 
  * Date Finished: 03/18/09 
  * Purpose: To create a program that will create a frame
  *     with ten buttons from 0 to 9 and will exit if the user
  *     click on the correct three buttons in order but if the
  *     wrong combination is used, the frame will turns red. 
*/

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;

public class combinationLock extends JFrame{
  String[] password={"8","4","9"};
  int x=0,y=0;
  JButton buttons[];
  JPanel buttonPanel;
  Container container = getContentPane();

  public combinationLock(){
    super("Combination Lock");

    ClickEvent action = new ClickEvent();
    container.setLayout(new FlowLayout());
    buttons = new JButton[10];
    buttonPanel = new JPanel();
    buttonPanel.setLayout(new GridLayout(0,buttons.length));

    for(int x=0;x<10;x++){
      if(event.getActionCommand().equals(password[x])){
      y+=1;
      if(y==3){
        System.exit(0);
      }
    }else{
      y+=1;
      if(y==3){
        container.setBackground(Color.red);
        x=-1;
        y=-1;
      }
    }
    x++;
   }
  }
 }
}