Thread: This is my code and i would like to ask a question..

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.Random;
import java.applet.*; 
public class SimpleApplet extends JApplet 
{
    JButton ng;
    JPanel pane1;
    Container cont;
    int in[] = new int[9];
    JButton  jl[] = new JButton[9];
    JButton jl1[] = new JButton[9];
    String moves = Integer.toString(0);
    JPanel pane2;
    JLabel  mov = new JLabel(moves);
 
    public void init()
    {
        cont = getContentPane();
 
        JPanel pane = new JPanel();
        ng = new JButton("New Game");
        pane.add(ng);
        pane1 = new JPanel();
        pane1.setLayout(new GridLayout(3,3,10,10));
        Random randomGenerator = new Random();
 
        jl[0] = new JButton("1");
        jl[1] = new JButton("2");
        jl[2] = new JButton("3");
        jl[3] = new JButton("4");
        jl[4] = new JButton("5");
        jl[5] = new JButton("6");
        jl[6] = new JButton("7");
        jl[7] = new JButton("8");
        jl[8] = new JButton();
 
        for(int y = 0;y<9;y++)
        {
            if (y == 8){jl[y].setBackground(Color.BLACK);}
            else{jl[y].setBackground(Color.GRAY);}
        }
        for(int j =0;j<9;j++){in[j]=0;}
 
        for(int i =0;i<9;i++){
            int x = randomGenerator.nextInt(9);
            jl[x].setFont(new Font("", Font.BOLD, 25));
            if(in[x]==0)
            {
                pane1.add(jl[x]);
                in[x]=1;
                jl1[i]=jl[x];
            }
            else i--;
 
        }
 
        pane1.setBackground(Color.BLACK);
        pane2 = new JPanel();
        pane2.add(new JLabel("Moves: "));
        pane2.add(mov);
        cont.add(pane1,BorderLayout.CENTER);
        cont.add(pane,BorderLayout.NORTH);
        cont.add(pane2,BorderLayout.SOUTH);
        Action pr = new Action(cont);
        ng.addActionListener(pr);
        for(int a=0;a<9;a++)
        {
            jl[a].addActionListener(pr);
            jl1[a].addActionListener(pr);
        }
 
    }
 
    class Action implements ActionListener
    {
        int j,j1;
        public Action(Container c)
        {
            Container container = c;
        }
 
        public void actionPerformed(ActionEvent evt)
        {
            String s = evt.getActionCommand();
            if (s.equals("New Game")) 
            {   
                pane1.removeAll(); 
                shufle();
                mov.setText("0");
                repaint();
                pane1.validate();
                pane2.validate();
 
            }
            else if( s.equals("New Game") ==false)
            {
 
            }
        }
 
        public void shufle()
        {   
 
            Random randomGenerator = new Random();
 
            for(int j =0;j<9;j++){in[j]=0;}
 
            for(int i =0;i<9;i++)
            {
                int x = randomGenerator.nextInt(9);
 
                jl[x].setFont(new Font("", Font.BOLD, 25));
 
                if(in[x]==0)
                {
                    pane1.add(jl[x]);
                    in[x]=1;
                    jl1[i]=jl[x];
                }
                else i--;
 
            }
        }
 
    }
}

Well first of all thx for your time. I am making a game (applet) where i have 9 buttons.Eight of them got the numbers from 0-8 on them and there is one blank box. The objective of this game is to put them in order (1,2,3,4,5,6,7,8,blank). The thing is how do i make change position with the blank one. The thing is that only neighbouring buttons can swap. I have tried everythin but.. My main idea was to swap the 2 block from the arrays i use then panel.removeAll(); add them again validate and repaint the applet but i got a problem with swap,when i swap the to block of the array i want to swap end up with the same JButton. please help.