Swing

Question: What is the default layout of  Frame or Panel in java?
Answer : By default BorderLayout.
Example:-
  JFrame frame = new JFrame() ;
JPanel p = new JPanel() ;
JButton start = new JButton("PLAY") ;
start.setSize(new Dimension(100, 100)) ;
frame.add(p.add(start)) ;
frame.setVisible(true) ;