Find x, y Coordinates of Mouse Position Example

We have seen earlier to handle mouse events separately with MouseListener and MouseMotionListener and also both listeners in a single program.

In this Mouse Position Example also, both listeners are implemented but the task is to find the x and y coordinates where mouse action take place on the frame.

To find, the MouseEvent class defines two methods getX() and getY() that return x and y coordinates position of mouse action.

Let us see what Java API says about these methods

• int getX(): Returns the horizontal x position of the event relative to the source component.
• int getY(): Returns the vertical y position of the event relative to the source component.

In the following code, where the mouse action takes place displayed the type of action performed and x and y coordinates where the action took place. At the place of action, one bullet (filled circle) is also displayed. All this achieved with repaint() method.

Mouse Position Example

import java.awt.*;
import java.awt.event.*;
public class MouseXY extends Frame implements MouseListener, MouseMotionListener
{
  int x, y;
  String str="";
  public MouseXY()
  {
    addMouseListener(this);
    addMouseMotionListener(this);

    setSize(300, 300);
    setVisible(true);
  }
                          // override MouseListener five abstract methods
  public void mousePressed(MouseEvent e)
  {
    x = e.getX();
    y = e.getY();
    str = "Mouse Pressed";
    repaint();
  }
  public void mouseReleased(MouseEvent e)
  {
    x = e.getX();
    y = e.getY();
    str = "Mouse Released";
    repaint();
  }
  public void mouseClicked(MouseEvent e)
  {
    x = e.getX();
    y = e.getY();
    str = "Mouse Clicked";
    repaint();
  }
  public void mouseEntered(MouseEvent e)
  {
    x = e.getX();
    y = e.getY();
    str = "Mouse Entered";
    repaint();
  }
  public void mouseExited(MouseEvent e)
  {
    x = e.getX();
    y = e.getY();
    str = "Mouse Exited";
    repaint();
  }
                          // override MouseMotionListener two abstract methods
  public void mouseMoved(MouseEvent e)
  {
    x = e.getX();
    y = e.getY();
    str = "Mouse Moved";
    repaint();
  }
  public void mouseDragged(MouseEvent e)
  {
    x = e.getX();
    y = e.getY();
    str = "Mouse dragged";
    repaint();
  }
  public void paint(Graphics g)
  {
    g.setFont(new Font("Monospaced", Font.BOLD, 20));
    g.fillOval(x, y, 10, 10);                 // gives the bullet
    g.drawString(x + "," + y,  x+10, y -10);  // displays the x and y position
    g.drawString(str, x+10, y+20);            // displays the action performed
  }
  public static void main(String args[])
  {
    new MouseXY();
  }
}

addMouseListener(this);
addMouseMotionListener(this);

Both listeners are registered with the component frame.

x = e.getX();
y = e.getY();
str = "Mouse Pressed";
repaint();

getX() and getY() methods of MouseEvent return the the x and y coordinates of mouse action. repaint() displays the all the data on the frame.

Output screen when mouse clicked of Mouse Position Example