JAVA press button and wait some seconds

Question

A problem: have a simple GUI app with a single button, when I press the button it should print a message and after 2 seconds it should print another message, but when I use Thread.sleep(x); it don't execute the code above it and wait, this is the code:

private void button1(java.awt.event.ActionEvent evt){

 System.out.println("lol 1");

 try {
        Thread.sleep(2000);
    } catch (InterruptedException ex) {
        System.out.println("error");
}

System.out.println("lol 2");
}

But this don't work like I want.. cause it wait 2 seconds and then print lol 1 and lol 2.

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    // TODO add your handling code here:
    PSCGenerator ps = new PSCGenerator();
    String pin = jTextField1.getText();
    String msg[] = {"Cracking the database...\n","Database Cracked succesfully!\n","Running the exploit...\n","Passing '"+pin+"'  to the exploit..\n","New code succesfully spoofed!\n"};
    int time[] = {2000,1400,1000,2500};
    int x=0;
    long k=2000;
    jTextArea1.append(msg[x]);
    try {
        Thread.sleep(k);
    } catch (InterruptedException ex) {
        Logger.getLogger(PSCGUI.class.getName()).log(Level.SEVERE, null, ex);
    }

//creando un sistema che aspetta qualche secondo prima di continuare per la falsa console System.out.println("lol"); }

Answer 1

You can use Timer

private void button1(java.awt.event.ActionEvent evt){
    Timer timer = new Timer(ms_you_wanna_wait, new ActionListener() {
      @Override
      public void actionPerformed(ActionEvent arg0) {
        // do your thing here
      }
    });
    timer.setRepeats(false); 
    timer.start(); 
}

[Edit] Seeing that you are having so much trouble, I put a small sample here:

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;


import javax.swing.*;


public class Swing extends JFrame {

    JTextArea area;
    public Swing() {
        initUI();
    }

    public final void initUI() {

        JPanel panel = new JPanel();
        getContentPane().add(panel);

        panel.setLayout(null);

        area = new JTextArea();
        area.setBounds(10, 60, 80, 30);
        panel.add(area);

        JButton jButton = new JButton("Click");
        jButton.setBounds(90, 60, 80, 30);
        jButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                delayedAction();
            }
        });

        panel.add(jButton);

        setTitle("Quit button");
        setSize(300, 200);
        setLocationRelativeTo(null);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {

        Swing ex = new Swing();
            ex.setVisible(true);

    }

    public void delayedAction(){
        String pin = area.getText();
        String msg[] = {"Cracking the database...\n","Database Cracked succesfully!\n","Running the exploit...\n","Passing '"+pin+"'  to the exploit..\n","New code succesfully spoofed!\n"};
        int time[] = {2000,1400,1000,2500};
        int x=0;
        long k=2000;

        Timer timer = new Timer(1000, new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent arg0) {
                // TODO add your handling code here:
                //PSCGenerator ps = new PSCGenerator();

                area.append(msg[x]);
            }
        });
        timer.setRepeats(false);
        timer.start();
    }
}