Java programming part 64 GUI : Using ActionEvent passed to actionPerformed detecting Event Componen

Java Programming tutorial, GUI, Graphical User Interface. this tutorial is teaching You how to use ActionEvent parameter to detect which component has made the event, and use on instance of the actionListener for many different components. import java.awt.BorderLayout; import java.awt.Color; import java.awt.Container; import java.awt.FlowLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.*; public class UserFrame extends JFrame implements ActionListener{ static String name = "charles"; UserFrame(){ setTitle("UsersFrame"); setSize(600,550); } public static void main(String[] args){ UserFrame f = new UserFrame(); JPanel pan1 = new JPanel(); pan1.setLayout(new BorderLayout()); pan1.setBackground(Color.GREEN); JPanel pan2 = new JPanel(); pan2.setBackground(Color.ORANGE); JPanel pan3 = new JPanel(); pan3.setBackground(Color.RED); JPanel pan4 = new JPanel(); pan4.setBackground(Color.magenta); JPanel pan5 = new JPanel(); pan5.setBackground(Color.BLUE); JPanel pan6 = new JPanel(); pan6.setBackground(Color.WHITE); pan6.setLayout(new BorderLayout()); JButton jb = new JButton("Hello"); jb.addActionListener(f); JButton jb6 = new JButton("WEST added"); JButton jb7 = new JButton("EAST added"); JLabel lb = new JLabel(" label for panel, this is showing the paneel"); JLabel lb2 = new JLabel(" East"); pan6.add(lb,BorderLayout.NORTH); pan6.add(lb2,BorderLayout.EAST); jb.setSize(50, 50); pan1.add(jb,BorderLayout.NORTH); pan1.add(pan6,BorderLayout.SOUTH); JButton jb2 = new JButton("there"); jb2.addActionListener(f); jb.setSize(50, 50); pan2.add(jb2); pan2.add(jb7); JButton jb3 = new JButton("North"); jb.setSize(50, 50); pan3.add(jb3); JButton jb4 = new JButton("South"); jb.setSize(50, 50); pan4.add(jb4); JButton jb5 = new JButton("Center"); jb.setSize(50, 50); pan5.add(jb5); f.add(pan1,BorderLayout.WEST); f.add(pan2,BorderLayout.EAST); f.add(pan3,BorderLayout.NORTH); f.add(pan4,BorderLayout.SOUTH); f.add(pan5,BorderLayout.CENTER); f.setDefaultCloseOperation(EXIT_ON_CLOSE); f.setVisible(true); } @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub if("Hello"==e.getActionCommand()){ System.out.println("you clicked the hello button"); } if("there"==e.getActionCommand()){ System.out.println("you clicked the there button"); } } }