paint.java

来自「6」· Java 代码 · 共 31 行

import java.io.*;
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class Paint extends Applet{
  Vector v=new Vector();
  public void paint(Graphics g){
   int[] x,y;
   x=new int[v.size()];
   y=new int[v.size()];
   for(int i=0;i<v.size();++i){
      Point p=(Point)v.get(i);
      x[i]=p.x;
      y[i]=p.y;
   }
   System.out.println(v.size());
   g.drawPolyline(x,y,v.size());
}
public void init(){
	addMouseMotionListener(new MouseMotionAdapter(){
		public void mouseDragged(MouseEvent e){
			Point p=e.getPoint();
			v.add(p);
			System.out.println(v.size());
			repaint();
		}
	});
}
}