Pause program until JButton is clicked

Question

I searched around for this and couldn't get a clear answer. I've written a game that needs to pause until the user clicks a button with their decision, and then continue to execute. Is there a standard way to do this?

I've seen similar questions that refer to using 'wait()' and 'notify()', but I wasn't sure I needed to add more threads, especially since I'm not executing complex or time-consuming code.

I should clarify it's a computer version of a board game, so nothing more than a frame with some components. Here's some of what I'm trying to do, thanks guys:

public class TreasureHunterFrame extends javax.swing.JFrame
{

    public TreasureHunterFrame()
    {
        initComponents();

        startNewGame();
    }

    private void startNewGame()
    {
        ...
        // User asked to click button while this method is running
        synchronized (this) // wait until Stay of Leave button is clicked
    {
        try 
        {
            while (!userHasMadeDecision)
        this.wait();
        }
        catch (InterruptedException ie)
        {
        }
        }
        ....

    }

    private void userStayButtonActionPerformed(java.awt.event.ActionEvent evt)
    {                                
        userHasMadeDecision = true;
        userLeaving = false;
        synchronized (this)
        {
        notifyAll();
        }
    }          

    public static void main(String args[])
    {

        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new TreasureHunterFrame().setVisible(true);
            }
        });
    }
}