newloader.java

来自「java应用开发详解」· Java 代码 · 共 23 行

import java.awt.*;
import java.io.*;
import java.lang.*;
import java.applet.*;

class MyLoader extends ClassLoader {
	public MyLoader(String bogus) {}
	public Class loadClass(String name, boolean resolve) {return null;}
	}

public class newLoader extends Applet {
    public void paint(Graphics g) {
	try {
	  ClassLoader cl = new MyLoader("foo");
	  g.drawString("Successfully extended the class loader!", 10, 10);
	}
	catch (SecurityException e) {
	  g.drawString("Caught security exception trying to create a new class loader", 10, 10);
        }
   }
}