Java Swing: changing text after delay

Basically, I have this game. Once I guess the correct answer, it starts a new game of new words I want to display correctly! But after three seconds, change it to an empty string What do I do?

My attempt:

if (anagram.isCorrect(userInput.getText()))
    {

        anagram = new Anagram();
        answer.setText("CORRECT!");
        word.setText(anagram.getRandomScrambledWord());
        this.repaint();
        try
        {
        Thread.currentThread().sleep(3000);
        }
        catch (Exception e)
        {
        }
        answer.setText("");

    } else
    {
        answer.setForeground(Color.pink);
        answer.setText("INCORRECT!");
    }

Edit:

My solution

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)
    {
        // TODO add your handling code here:
    if (anagram.isCorrect(userInput.getText()))
    {
        answer.setText("CORRECT!");

        ActionListener taskPerformer = new ActionListener()
    {
    public void actionPerformed(ActionEvent evt)
    {
        anagram = new Anagram();
        word.setText(anagram.getRandomScrambledWord());
        answer.setText("");
        userInput.setText("");
    }
    };
    Timer timer = new Timer(3000,taskPerformer);
    timer.setRepeats(false);
    timer.start();
    } else
    {
        answer.setForeground(Color.pink);
        answer.setText("INCORRECT!");
    }
    }

I'm not sure, but I hope I follow mad programmer's advice instead of blocking the event itself, but a new thread I also look for Java timer

Solution

Swing is an event - driven environment When an event scheduling thread is blocked, no new events can be processed

You should never block EDT in any time-consuming process (such as I / O, loop, or thread #sleep)

You may want to read the event dispatch thread for more information

Instead, you should use javax swing. Timer. It will trigger actionlistener after a given delay

The advantage is that the actionperformed method is executed in the context of event dispatching thread

For examples, see this or this or this or this