actionlistener java

1import java.awt.event.ActionEvent;
2import java.awt.event.ActionListener;
3
4/*in main*/
5button.addActionListener(new ActionListener() {
6  public void actionPerformed(ActionEvent e) {
7			System.out.println('x');
8  }
9});

1button.addActionListener(new ActionListener() {
2            @Override
3            public void actionPerformed(ActionEvent actionEvent) 
4            {
5              
6            }
7        });

1JButton Button = new JButton();
2Button.setSize(300,300);
3Button.addActionListener(new ActionListener() {
4	public void actionPerformed(ActionEvent e) 
5    System.out.println(BlockNumber)
6  	}
7});