Do JButtons really act like this? [closed]

Question

boolean bool1 = true;
boolean bool2 = false;
boolean bool3 = true;

while (bool3) {
    while (bool1) {
        if (e.GetSource() == button1) {
            System.out.println("1");
            bool2 = true;
            bool1 = false;
        } else if (e.getSource() == button2) {
            System.out.println("2");
            bool2 = true;
            bool1 = false;
        } else {
            return;
        }
    }

    while (bool2) {
        if (e.GetSource() == button1) {
            System.out.println("1");
            bool2 = false;
            bool3 = false;
        } else if (e.getSource() == button2) {
            System.out.println("2");
            bool2 = false;
            bool3 = false;
        } else {
            return;
        }
    }
}

System.out.println("done");

When I click on button1 which is inside the while(bool1) it prints 1, but after that I don't even have enough time to click another button because the button1 inside while(bool2) also prints which leaves me with 2 print statements even if I only clicked 1 button.

Answer 1

You don't have to put it inside a loop. You usually implement an action listener that gets called when you click.

As you can tell if you put it inside a while it will never go out.

Look at the tutorial

https://docs.oracle.com/javase/tutorial/uiswing/components/button.html

Is something like this:

public void actionPerformed(ActionEvent e) {
    if ("disable".equals(e.getActionCommand())) {
         // do something 
    } else {

    }
} 

Answer 2

If you design your program differently, you probably don't need the loop or e.getSource().

Instead, you usually assign an event handler that "does something" (e.g. print a message, or change a state variable) when the button is pressed.

EXAMPLE:

https://www.tutorialspoint.com/swing/swing_jbutton.htm

  JButton okButton = new JButton("OK");   
  okButton.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent e) {
        statusLabel.setText("Ok Button clicked.");
     }          
  });

In this case, the button's "event handler" is an "Anonymous class" that implements a custom actionPerformed() method.

Ifyou