... have a class to handle action events, we need to return to our constructor and register our listeners.Back to topStep 7 - Registering our Event ListenersGo up to the top of the file to our controller ... backwardButton1 = new BackwardButton( ); backwardButton1.setBounds(10,1,20 ,40 ); container.add(backwardButton1); playPauseButton1 = new PlayPauseButton( ); playPauseButton1.setBounds(0,0,20 ,40 ); ... adding buttons to it.backwardButton1 = new BackwardButton( );backwardButton1.setBounds(10,1,20 ,40 );container.add(backwardButton1);We create a new backwards button instance and add it to our...