Delay ..~

[R3.RyozKidz]

Here is my code :

import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 
import java.awt.GridLayout; 
 
import javax.swing.JButton; 
import javax.swing.JFrame; 
import javax.swing.JPanel; 
import javax.swing.JOptionPane; 
 
import java.util.Random; 
 
public class Game extends JPanel 
{ 
    private JFrame frame; 
    private JButton buttons[]; 
    private Random random; 
     
    private String labels[] = { "1" , "1" , "2" , "2" , "3" , "3" , "4" , "4" , "5" , "5" , "6" , "6" , "7" , "7" , "8" , "8"}; 
     
    private int toggleButton; 
    private int pairMatched; 
    private int firstEvent; 
    private int secondEvent; 
     
    public Game() 
    { 
        super(new GridLayout(4 , 4 , 5, 5)); 
        frame = new JFrame("Gamex"); 
        buttons = new JButton[16]; 
        random = new Random(); 
         
        toggleButton = 1; 
        pairMatched = 0; 
        firstEvent = 0; 
        secondEvent = 0; 
         
        ActionEventHandler handler = new ActionEventHandler(); 
         
        for(int i = 0 ; i < labels.length ; i++) 
        { 
            int x = random.nextInt(16); 
            String temp = labels[i]; 
            labels[i] = labels[x]; 
            labels[x] = temp; 
             
            buttons[i] = new JButton("*"); 
            buttons[i].addActionListener(handler); 
            this.add(buttons[i]); 
             
        } 
         
        frame.setContentPane(this); 
        frame.setSize(400 , 400); 
        frame.setVisible(true); 
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    } 
     
    private class ActionEventHandler implements ActionListener 
    { 
        public void actionPerformed(ActionEvent event) 
        { 
            if(toggleButton == 1) 
            { 
                Object source = event.getSource(); 
                 
                for(int i = 0 ; i < buttons.length ; i++) 
                { 
                    if(source == buttons[i]) 
                    { 
                        firstEvent = i; 
                    } 
                } 
                buttons[firstEvent].setText(labels[firstEvent]); 
                buttons[firstEvent].setEnabled(false); 
            } 
             
            if(toggleButton == 2) 
            { 
                Object source = event.getSource(); 
                 
                for(int i = 0 ; i < buttons.length ; i++) 
                { 
                    if(source == buttons[i]) 
                    { 
                        secondEvent = i; 
                    } 
                } 
                 
                buttons[secondEvent].setText(labels[secondEvent]); 
                buttons[secondEvent].setEnabled(false); 
                 
                toggleButton = 0; 
                 
                if(labels[firstEvent].equals(labels[secondEvent])) 
                { 
                    buttons[firstEvent].setEnabled(false); 
                    buttons[secondEvent].setEnabled(false); 
                    pairMatched++; 
                } 
                else 
                { 
                    buttons[firstEvent].setEnabled(true); 
                    buttons[secondEvent].setEnabled(true); 
                    buttons[firstEvent].setText("*"); 
                    buttons[secondEvent].setText("*"); 
                } 
                 
                if(pairMatched == 8 ) 
                { 
                    JOptionPane.showMessageDialog(null , "Congratulation !\nYou have won!" , "Message" , JOptionPane.PLAIN_MESSAGE); 
                } 
            } 
             
            toggleButton++; 
        } 
    } 
     
    public static void main(String args[]) 
    { 
        Game xx = new Game(); 
    } 
}

I want to use GUI timer to make a delay , but i have tried many times , failed .
Can anyone help ?

[abdul.gafur]

where delay will be inserted and for what?

[R3.RyozKidz]

The delay is for the second button .
I want some kind of pause to make the button to freeze for 1 second so that the user can see what is the text on the button.

[WingedPanther]

Why not use sleep(1000)?

[R3.RyozKidz]

if i use Thread.sleep(1000) , where am i going to place the exception ? java.lang.InterruptedException ?

[R3.RyozKidz]

Here is my code :

import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 
import java.awt.GridLayout; 
 
import javax.swing.JButton; 
import javax.swing.JFrame; 
import javax.swing.JPanel; 
import javax.swing.JOptionPane; 
 
import java.util.Random; 
import java.lang.InterruptedException; 
 
public class Game extends JPanel 
{ 
    private JFrame frame; 
    private JButton buttons[]; 
    private Random random; 
     
    private String labels[] = { "1" , "1" , "2" , "2" , "3" , "3" , "4" , "4" , "5" , "5" , "6" , "6" , "7" , "7" , "8" , "8"}; 
     
    private int toggleButton; 
    private int pairMatched; 
    private int firstEvent; 
    private int secondEvent; 
     
    public Game() 
    { 
        super(new GridLayout(4 , 4 , 5, 5)); 
        frame = new JFrame("Gamex"); 
        buttons = new JButton[16]; 
        random = new Random(); 
         
        toggleButton = 1; 
        pairMatched = 0; 
        firstEvent = 0; 
        secondEvent = 0; 
         
        ActionEventHandler handler = new ActionEventHandler(); 
         
        for(int i = 0 ; i < labels.length ; i++) 
        { 
            int x = random.nextInt(16); 
            String temp = labels[i]; 
            labels[i] = labels[x]; 
            labels[x] = temp; 
             
            buttons[i] = new JButton("*"); 
            buttons[i].addActionListener(handler); 
            this.add(buttons[i]); 
             
        } 
         
        frame.setContentPane(this); 
        frame.setSize(400 , 400); 
        frame.setVisible(true); 
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    } 
     
    private class ActionEventHandler implements ActionListener 
    { 
        public void actionPerformed(ActionEvent event) 
        { 
            if(toggleButton == 1) 
            { 
                Object source = event.getSource(); 
                 
                for(int i = 0 ; i < buttons.length ; i++) 
                { 
                    if(source == buttons[i]) 
                    { 
                        firstEvent = i; 
                    } 
                } 
                buttons[firstEvent].setText(labels[firstEvent]); 
                buttons[firstEvent].setEnabled(false); 
            } 
             
            if(toggleButton == 2) 
            { 
                Object source = event.getSource(); 
                 
                for(int i = 0 ; i < buttons.length ; i++) 
                { 
                    if(source == buttons[i]) 
                    { 
                        secondEvent = i; 
                    } 
                } 
                 
        try 
        { 
                buttons[secondEvent].setText(labels[secondEvent]); 
            Thread.sleep(1000); 
                buttons[secondEvent].setEnabled(false); 
        } 
        catch(InterruptedException e) 
        { 
            System.exit(1); 
        } 
                 
                toggleButton = 0; 
                 
                if(labels[firstEvent].equals(labels[secondEvent])) 
                { 
                    buttons[firstEvent].setEnabled(false); 
                    buttons[secondEvent].setEnabled(false); 
                    pairMatched++; 
                } 
                else 
                { 
 
                    buttons[firstEvent].setEnabled(true); 
                    buttons[secondEvent].setEnabled(true); 
                    buttons[firstEvent].setText("*"); 
                    buttons[secondEvent].setText("*"); 
                } 
                 
                if(pairMatched == 8 ) 
                { 
                    JOptionPane.showMessageDialog(null , "Congratulation !\nYou have won!" , "Message" , JOptionPane.PLAIN_MESSAGE); 
                } 
            } 
             
            toggleButton++; 
        } 
    } 
     
    public static void main(String args[]) 
    { 
        Game xx = new Game(); 
    } 
}

The Thread.sleep(1000) is working but not what i wanted .
When the user clicks on the second button , the button doesn't change the text but it does pause for 1 second .
Still got problem ..~ help !

[abdul.gafur]

When the user clicks on the second button , the button doesn't change the text but it does pause for 1 second .

Ya, that is caused that thread.sleep(1000) is run directly when you click on the second button. Although you write it under buttons[secondEvent].setText(labels[secondEvent]).
So buttons[secondEvent].setText(labels[secondEvent]) is done after sleep(1000).

That is thread.

[R3.RyozKidz]

then any suggestion ? i tried it with others method as well but all ended up with the same thing ..~

[WingedPanther]

You have to put the sleep(1000) call exactly where you want execution to pause. Try moving it around within the method.

[abdul.gafur]

But it pause right after we click the second button, before system do buttons[secondEvent].setText(labels[secondEvent]. Although buttons[secondEvent].setText(labels[secondEvent] is written before thread.sleep().