How do I add a MouseListener to a JFrame?

Posted on by Muna Meyer

How do I add a MouseListener to a JFrame?

Basically all you have to do in order to create a JFrame that handles mouse events is:

  1. Create a class that extends JFrame and implements MouseListener .
  2. Overrde mouseClicked , mouseEntered , mouseExited , mousePressed , mouseReleased to monitor the coresponding events.
  3. Use MouseEvent.

How do I import MouseListener?

Java MouseListener Example

  1. import java.awt.*;
  2. import java.awt.event.*;
  3. public class MouseListenerExample extends Frame implements MouseListener{
  4. Label l;
  5. MouseListenerExample(){
  6. addMouseListener(this);
  7. l=new Label();
  8. l.setBounds(20,50,100,20);

Does JPanel extend JComponent?

With the exception of top-level containers, all Swing components whose names begin with “J” descend from the JComponent class. For example, JPanel , JScrollPane , JButton , and JTable all inherit from JComponent . The JComponent class extends the Container class, which itself extends Component . …

How can you create a listener class that receives events when the mouse is moved?

Press and hold the mouse button, and then move the mouse so that the cursor is outside the yellow rectangle. You will see mouse-dragged events.

Which Mouselistener implemented by which class in Java?

This class implements the MouseInputListener , a convenient interface that implements the MouseListener and MouseMotionListener interfaces….The Mouse Listener API.

Method Purpose
mousePressed(MouseEvent) Called just after the user presses a mouse button while the cursor is over the listened-to component.

What is mouse adapter in Java?

Class MouseAdapter An abstract adapter class for receiving mouse events. This class exists as convenience for creating listener objects. Mouse events let you track when a mouse is pressed, released, clicked, moved, dragged, when it enters a component, when it exits and when a mouse wheel is moved.

How do I use MouseListener in java?

Press and hold the mouse button again, and then drag the mouse so that the cursor ends up outside the window. Release the mouse button. You will see a mouse-pressed event, followed by a mouse-exited event, followed by a mouse-released event. You are not notified of the cursor’s motion.

What is MouseAdapter vs MouseListener in java?

MouseAdapter implements MouseListener. In absence of MouseAdapter , if you implement MouseListener , you have to provide implementation to all of these interface methods. when would it be wise to use the one and when the other? If you want to implement above 8 methods, implement MouseListener .

What are the methods that need to be added in a class when implementing the MouseListener interface?

Which method is used to register a mouse listener?

The listener object created from that class is then registered with a component using the component’s addMouseListener method. A mouse event is generated when the mouse is pressed, released clicked (pressed and released).

What is mouselistener in Java?

Java MouseListener is a class that gets notified when certain mouse events happen. More details such as declaration, methods, and implementation of Java MouseListener is discussed in this document in detail. This is a guide to Java MouseListener.

How do I implement a mouse listener in AWT?

Alternatively, use the corresponding AWT MouseAdapter class, which implements the MouseListener, MouseMotionListener, and MouseWheelListener interfaces. The following example shows a mouse listener.

Is it possible to implement the mousewheellistener interface in the mouseinputlistener?

However, the MouseInputListener interface does not implement the MouseWheelListener interface. Alternatively, use the corresponding AWT MouseAdapter class, which implements the MouseListener, MouseMotionListener, and MouseWheelListener interfaces.

How do you listen to mouse events in Java?

The mouse listener listens for events both on the BlankArea and on its container, an instance of MouseEventDemo. Each time a mouse event occurs, a descriptive message is displayed under the blank area. By moving the cursor on top of the blank area and occasionally pressing mouse buttons, you can fire mouse events.