How to make a pop up within if else

Question

I'm now making an user interface which will be used to control a remote robot. I want to make it so that when a button is pressed, a window will pop-up and tells the user what the robot is doing. At the moment, I can only make it to show the message in the cmd box. Code is as follow:
class ActionHandler implements java.awt.event.ActionListener
          public void actionPerformed(java.awt.event.ActionEvent event)
               Object object = event.getSource();
               if (object == forwardButton) {
                    System.out.println("Robot moving fordward");
               else if (object == backwardButton) {
                    System.out.println("Robot moving backward");
               else if (object == rotateLeftButton){
                    System.out.println("Robot rotating to its left");
               else if (object == rotateRightButton){
                    System.out.println("Robot rotating to its right");
The only way to make pop-up which I know is this one:
import javax.swing.*;
public class DisplayTextInWindow {
     public static void main(String[] args) {
          // create a String variable
          String messageText = "Hello world";
          // display it in the console window
          System.out.println(messageText);
          // now display it in its own window
          JOptionPane.showMessageDialog( null, messageText );
Which I can put into the code for interface because I can't start another class within an if statement (as far as I know anyway...)
Can anyone please teach me how to make a pop-up within an if else statement?

Answer 1

Which I can put into the code for interface because I can't start another class within an if statement (as far as I know anyway...)yes you can.
if (robotRotating)
    newClass class = new newClass();
    class.methods;
Can anyone please teach me how to make a pop-up within an if else statement?sure
if (robotRotating)
   //i think this part is already answered in the previous post
   javax.swing.JOptionPane.showMessageDialog(null, "your message here", "your title here", JOptionPane.OK_OPTION);
}