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Java get Coordinate of current mouse position

ubuntuguy
ubuntuguy asked
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Last Modified: 2013-11-23
I have a double array [10][10] or JButtons.  I added the 100 buttons to a JPanel.  I wanted to know if there is a way to get the coordinate position  of the button where the mouse cursor is.  i.e. if the mouse is over the first button that would return 0,0.

Thanks.
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Top Expert 2006
Commented:
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Top Expert 2006

Commented:
Here's an example.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
 
public class Example extends JFrame implements MouseListener
{
   JButton [] buttons=new JButton[100];
   
   public Example()
   {
      super("Example buttons");
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      
      setLayout(new GridLayout(10,10));
      
      for(int i=0; i<buttons.length; i++)
      {
         buttons[i]=new JButton(""+i);
         buttons[i].setName(""+i); // this allows us to identify it later
         buttons[i].addMouseListener(this);
         add(buttons[i]);
      }
      
      pack();
      setLocationRelativeTo(null);
      setVisible(true);
   }
   
   public static void main(String[]a)
   {
      new Example();
   }
   
   
   public void mouseEntered(MouseEvent evt)
   {
      JButton buttonPressed=(JButton)evt.getSource();
      
      int xplusy=Integer.parseInt(buttonPressed.getName());
      int x=xplusy % 10;
      int y=(xplusy-x)/10;
      
      setTitle("Currently on button ("+x+", "+y+")");
   }
   
   public void mouseExited(MouseEvent evt)
   {
      setTitle("Example buttons");//back to normal
   }
   
   
   public void mousePressed(MouseEvent evt){}
   public void mouseReleased(MouseEvent evt){}
   public void mouseClicked(MouseEvent evt){}
}

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