[java] Java Buttons

JFrame f = new JFrame("Game");Container c = f.getContentPane(); //this grabs the default Container used by the JFrame, so that we can add stuff to itJButton b = new JButton("Click me!");Canvas canvas = new Canvas();c.add(canvas); //here we are adding stuff to the Containerc.add(b); //you add buttons the same wayf.pack();f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);f.setVisible(true);

 public MainWindow()    {        super( "Game" );        // Exit the program when we close the window for god's sake!        setDefaultCloseOperation( EXIT_ON_CLOSE );        // We don't want to repaint when the OS says we need to        setIgnoreRepaint( true );                        GraphicsEnvironment ge =                             GraphicsEnvironment.getLocalGraphicsEnvironment();        GraphicsDevice gd = ge.getDefaultScreenDevice();                // Setup the Canvas        renderCanvas = new Canvas()        {            public Dimension getPreferredSize()            {                return new Dimension( 1024, 768 );            }        };                add( "Center", renderCanvas );        btn = new JButton( "CLICK!" );        btn.setLocation( 10, 10 );        add( btn );        pack();                // Put the window in the center of the screen        Point cp = ge.getCenterPoint();        cp.translate( -getWidth()/2, -getHeight()/2 );        setLocation( cp.x, cp.y );                setResizable( false );        setVisible( true );        renderCanvas.createBufferStrategy( 2 );    }