geturlimage.java

来自「该程序获得UML的信息」· Java 代码 · 共 38 行

/**
 * Title:        Java网络编程演示
 * Description:  Java网络编程演示，用于北京师范大学计算机系Java课程教学示范。
 * Copyright:    Copyright (c) 2001
 * Company:      北京师范大学计算机系
 * @author 孙一林
 * @version 1.0
 */
import java.net.*;
import java.io.*;
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
public class getURLImage extends Frame
{private Image img;
 public void paint(Graphics g)
  {g.drawImage(img,20,20,this);
  }
public void processWindowEvent(WindowEvent e)
 {super.processWindowEvent(e);
  if(e.getID()==WindowEvent.WINDOW_CLOSING)
         System.exit(0);
  }
 public static void main(String args[]) throws MalformedURLException,IOException
  {if(args.length!=1)
      {System.out.println("Usage:java URLTest3<imageurl>");
       System.exit(-1);
      }
   URL url=new URL(args[0]);
   getURLImage urlt= new getURLImage();
   urlt.img=urlt.createImage((ImageProducer)url.getContent());
   urlt.enableEvents(AWTEvent.WINDOW_EVENT_MASK);
   urlt.setSize(300,300);
   urlt.setVisible(true);
  }
}