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AWT MouseListener Interface
The class which processes the MouseEvent should implement this interface.The object of that class must be registered with a component. The object can be registered using the addMouseListener() method.
Interface declaration
Following is the declaration for java.awt.event.MouseListener interface:
public interface MouseListener extends EventListener
Interface methods
S.N. | Method & Description |
---|---|
1 | void mouseClicked(MouseEvent e) Invoked when the mouse button has been clicked (pressed and released) on a component. |
2 | void mouseEntered(MouseEvent e) Invoked when the mouse enters a component. |
3 | void mouseExited(MouseEvent e) Invoked when the mouse exits a component. |
4 | void mousePressed(MouseEvent e) Invoked when a mouse button has been pressed on a component. |
5 | void mouseReleased(MouseEvent e) Invoked when a mouse button has been released on a component. |
Methods inherited
This interface inherits methods from the following interfaces:
java.awt.EventListener
MouseListener Example
Create the following java program using any editor of your choice in say D:/ > AWT > com > tutorialspoint > gui >
AwtListenerDemo.javapackage com.tutorialspoint.gui; import java.awt.*; import java.awt.event.*; public class AwtListenerDemo { private Frame mainFrame; private Label headerLabel; private Label statusLabel; private Panel controlPanel; public AwtListenerDemo(){ prepareGUI(); } public static void main(String[] args){ AwtListenerDemo awtListenerDemo = new AwtListenerDemo(); awtListenerDemo.showMouseListenerDemo(); } private void prepareGUI(){ mainFrame = new Frame("Java AWT Examples"); mainFrame.setSize(400,400); mainFrame.setLayout(new GridLayout(3, 1)); mainFrame.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent windowEvent){ System.exit(0); } }); headerLabel = new Label(); headerLabel.setAlignment(Label.CENTER); statusLabel = new Label(); statusLabel.setAlignment(Label.CENTER); statusLabel.setSize(350,100); controlPanel = new Panel(); controlPanel.setLayout(new FlowLayout()); mainFrame.add(headerLabel); mainFrame.add(controlPanel); mainFrame.add(statusLabel); mainFrame.setVisible(true); } private void showMouseListenerDemo(){ headerLabel.setText("Listener in action: MouseListener"); Panel panel = new Panel(); panel.setBackground(Color.magenta); panel.setLayout(new FlowLayout()); panel.addMouseListener(new CustomMouseListener()); Label msglabel = new Label(); msglabel.setAlignment(Label.CENTER); msglabel.setText("Welcome to TutorialsPoint AWT Tutorial."); msglabel.addMouseListener(new CustomMouseListener()); panel.add(msglabel); controlPanel.add(panel); mainFrame.setVisible(true); } class CustomMouseListener implements MouseListener{ public void mouseClicked(MouseEvent e) { statusLabel.setText("Mouse Clicked: (" +e.getX()+", "+e.getY() +")"); } public void mousePressed(MouseEvent e) { } public void mouseReleased(MouseEvent e) { } public void mouseEntered(MouseEvent e) { } public void mouseExited(MouseEvent e) { } } }
Compile the program using command prompt. Go to D:/ > AWT and type the following command.
D:\AWT>javac com\tutorialspoint\gui\AwtListenerDemo.java
If no error comes that means compilation is successful. Run the program using following command.
D:\AWT>java com.tutorialspoint.gui.AwtListenerDemo
Verify the following output