java button pressed for 3 seconds

Question

I created a button and I want these:

When the user clicks the button, it stays pressed like 3 seconds. After 3 seconds the button should be again look pressable. So the

Answer 1

btn.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
   btn.setEnabled(false);
   Timer timer = new Timer( 3000, new ActionListener(){
     @Override
     public void actionPerformed( ActionEvent e ){
       btn.setEnabled( true );
     }
   }
   timer.setRepeats( false );
   timer.start();
 }
});

I took the answer from @vels4j and added the javax.swing.Timer to it