MouseListener Error

[DaveMc]

Hey im Having a problem with my MouseListener method override..its saying I did not override the method mouseExited in my class..but i clearly did..Can anyone help out my situation :( I have a different class with the main method which tests this code and has the setVisible(true); method. The error im getting is Uncompilable source code - mouseevent.MouseEvent.classHandler is not abstract and does not override abstract method mouseExited(java.awt.event.MouseEvent) in java.

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;


public class MouseEvent extends JFrame{
    private JLabel statusBar;
    private JPanel mousePanel;
    
    public MouseEvent(){
        super("Area");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(350,350);
        
        mousePanel = new JPanel();
        mousePanel.setBackground(Color.WHITE);
        add(mousePanel, BorderLayout.CENTER);
        
        statusBar = new JLabel("Do something....");
        add(statusBar,BorderLayout.SOUTH);
        
        classHandler handler;
        handler = new classHandler();
        mousePanel.addMouseListener(handler);
        mousePanel.addMouseMotionListener(handler); 
    }
    
    private class classHandler implements MouseListener, MouseMotionListener{      // saying mouseExited has not been overridden.
        public void mouseClicked(MouseEvent event){
            statusBar.setText(String.format("You clicked at %d,%d", 
                    event.getX(), event.getY()));
          }
        public void mousePressed(MouseEvent event){
            statusBar.setText("You pressed down the mouse");
        }
        public void mouseReleased(MouseEvent event){
            statusBar.setText("You released the mouse");
        }
        public void mouseEntered(MouseEvent event){
            statusBar.setText("You entered the area");
            mousePanel.setBackground(Color.ORANGE);
        }
       
        public void mouseDragged(MouseEvent event){
            statusBar.setText("You are dragging the mouse");
        }
        public void mouseMoved(MouseEvent event){
            statusBar.setText("You moved the mouse");
        }
        public void mouseExited(MouseEvent event){
            statusBar.setText("You have left the area");
        }
    
    } 
}

[DarrylBurke]

That's what you get for naming your class the same as an existing JDK class, moreover a JDK class that you need to use. Actually, none of the MouseListener methods are implemented; they all require a parameter of type java.awt.event.MouseEvent whereas in the context of your compilation unit -- your source code -- any unqualified MouseEvent will be treated as a reference to an instance of the containing class, also (badly) named MouseEvent.

Also, there's absolutely no need for this class to extend JFrame, as it isn't in any way a specialized JFrame, just an ordinary one -- so it could as well contain a JFrame, either as an instance field or as a (method-)local variable. Favor composition over inheritance.

db

[DaveMc]

Much appreciated :)