三十八毒

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;

public class DrawLine {	
      JFrame f = new JFrame("Test DrawLine!");	
      public DrawLine() {
           super();
      }
      public static void main(String[] args) {		
           new DrawLine().init();
      }
      private void init() {		
           f.setSize(600,500);
           f.setVisible(true);			
           f.addMouseListener(new MouseAdapter(){	
	     int orgX;
	     int orgY;			
	     public void mousePressed(MouseEvent e){
	           orgX = e.getX();
	           orgY = e.getY();
	     }			
	     public void mouseReleased(MouseEvent e){
	           Graphics g = f.getGraphics();
	           g.setColor(Color.RED); //设置绘图颜色
	        g.setFont(new Font("隶书", Font.BOLD, 20)); //设置文本字体
	        g.drawString(new String(orgX+","+orgY),orgX,orgY); //打印鼠标按下时的坐标文本
	        g.drawString(new String(e.getX()+","+e.getY()),e.getX(),e.getY()); //打印鼠标释放时的坐标文本
	        g.drawLine(orgX,orgY,e.getX(),e.getY());
	     }
           });		
      }
}