CODEWITHSUNDEEP
javaswingtimerjbutton
ForJava
ForJava

Reputation: 13

How to work with Swing timer

I'm trying to stop the program for a second using Swing Timer.

Timer timer = new Timer(10000,
   new ActionListener(public void actionPerformed(ActionEvent e) {}));

didn't work

public class Card extends JButton implements ActionListener {

    int numberClick = 0;

    public card() {
        addActionListener(this);
    }

    public void actionPerformed(ActionEvent e) {
        numberClick++;

        if(numberClick == 2) {
            Timer timer = new Timer(10000, );
            timer.start();
            numberClick = 0;
        }
    }
}

Upvotes: 1

Views: 93

Answers (1)

Paul Samsotha
Paul Samsotha

Reputation: 209112

You seem to lack basic understanding of how the Timer works. Please read How to Use Swing Timers. The concept is fairly simple.

The first argument in the Timer constructor is the delay. Seems you have that part down. The second argument is the ActionListener that listens for the "Timer Events" (actually ActionEvents). An event is fired each delayed time. The callback (actionPerformed) contains what should be performed after that delay (tick). So whatever you want to happen after that second, put it in the actionPerformed of the timer's ActionListener.

Also if you only want it t occur once, you should call timer.setRepeats(false);. Also note, you are using 10000, which is in milliseconds, so it's 10 seconds, not 1. You should change it to 1000

Example Flow

JButton button = new JButton("Press Me");
button.addActionListener(new ActionListener(){
    @Override
    public void actionPerformed(ActionEvent e) {

        Timer timer = new Timer(1000, new ActionListener(){
            @Override
            public void actionPerformed(ActionEvent e) {
                System.out.println("Print after one second");
            }
        });
        timer.setRepeats(false);
        timer.start();
    }
});

Press Button → Wait One Second → Print Statement

Upvotes: 2

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