座標表示

●サンプル

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

public class mousepoint extends JFrame implements MouseListener{

  static mousepoint frame;
  Point pos = null ;

  public void paint(Graphics g){
    super.paint(g);
    if(pos == null)
      return ;
    int x = (int)pos.getX();
    int y = (int)pos.getY();
    String s = String.format("(%d,%d)",x,y);  //文字表示
    g.drawString(s,x,y);
  }

  public void mouseClicked(MouseEvent e){  //マウスクリック時
    pos = e.getPoint();  //水平位置取得
    this.repaint();  //描画
  }

  public void mouseEntered(MouseEvent e){;}
  public void mouseReleased(MouseEvent e){;}
  public void mousePressed(MouseEvent e){;}
  public void mouseExited(MouseEvent e){;}

  protected void processEvent(AWTEvent e){
    super.processEvent(e);

    if(e.getID() == WindowEvent.WINDOW_CLOSING)
      System.exit(0);
  }

    mousepoint(){
      addMouseListener(this);
      setTitle("mousepoint");
      setSize(300,250);
      setVisible(true);
    }

    public static void main(String[] args){
      frame = new mousepoint();
    }
}