troubleshooting Question

class not abstract and does not override abstract method problem

Avatar of nhay59
nhay59 asked on
Java
8 Comments2 Solutions8333 ViewsLast Modified:
HI,

Back again. I'm now trying to extend my graphics program to allow a user to drag the PacMan drawing around the window to a new location. I have added the required code, but get the following error when I try to compile it,

PacMan_clickstest is not abstract and does not override abstract method mouseExited(java.awt.event.MouseEvent) in java.awt.event.MouseListener

Why would it throw up this error, and what is the best way to correct this problem?

My current code is as follows,

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

public class PacMan_clickstest extends JPanel implements MouseListener, MouseMotionListener{
   
    public static int mode = 0;
    private static JButton rightButton;
    private static JButton leftButton;
    int last_x, last_y;
    Rectangle rect;
    boolean pressOut = false;
   
    public PacMan_clickstest(){
       
        this.addMouseListener(new MouseAdapter() {
            public void mousePressed(MouseEvent e) {
                last_x = e.getX();
                last_y = e.getY();
                pressOut = rect.contains(e.getX(), e.getY());
            }
           
            public void mouseDragged(MouseEvent e){
                if ( !pressOut)
                    updateLocation(e);
            }
           
            public void mouseReleased(MouseEvent e) {}
            public void mouseMoved(MouseEvent e){}
            public void mouseClicked(MouseEvent e){}
            //public void mouseExited(MouseEvent e){}
            public void mouseEntered(MouseEvent e){}
           
            public void updateLocation(MouseEvent e) {
                rect.translate(e.getX() - last_x, e.getY() - last_y);
                last_x = e.getX();
                last_y = e.getY();
               
                repaint();
            }
        });
    }

public void paintComponent(Graphics g) {
    Dimension d = getSize();
   
    Graphics2D g2 = (Graphics2D)g;
   
    int size = 100;
    Ellipse2D.Double head =
            new Ellipse2D.Double(0, 0, size, size);
    Ellipse2D.Double eye =
            new Ellipse2D.Double(size/2-1, size/5-1,
            size/10, size/10);
    GeneralPath mouth = new GeneralPath();
    mouth.moveTo(size, size/4);
    mouth.lineTo(size/8, size/2);
    mouth.lineTo(size, size*3/4);
    mouth.closePath();
    Area pacman = new Area(head);
    pacman.subtract(new Area(eye));
    pacman.subtract(new Area(mouth));
    g2.setPaint(Color.yellow);
    g2.fill(pacman);
    g2.setPaint(Color.black);
    g2.draw(pacman);  
}

public static void main(String[] args) {
    JFrame frame = new JFrame("Drawing stuff");
    Container contentPane = frame.getContentPane();
   
    JPanel panel = new JPanel();
    PacMan_clickstest pacman = new PacMan_clickstest();
   
    leftButton = new JButton("Leftt");
    //leftButton.addActionListener(pacman);
    panel.add(leftButton);
   
    rightButton = new JButton("Right");
    //rightButton.addActionListener(pacman);
    panel.add(rightButton);
   
    contentPane.add(panel, BorderLayout.SOUTH);
    contentPane.add(pacman, BorderLayout.CENTER);
   
    frame.setSize(600, 600);
    frame.setVisible(true);
   
    frame.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent e) {
            System.exit(0);
        }
    });
}
}

Any advice or help appreciated. Many thanks
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