12123232

 

package com.bleum.cltest;

import java.io.IOException;

import java.io.InputStream;

public class ClassLoaderTest {

public static void main(String[] args) throws Exception{

ClassLoader myLoader = new ClassLoader(){

@Override

public Class<?> loadClass(String name) throws ClassNotFoundException{

try {

String fileName = name.substring(name.lastIndexOf(".")+1)+".class";

InputStream is = getClass().getResourceAsStream(fileName);

if(is==null){

return super.loadClass(name);

}

byte[] b = new byte[is.available()];

is.read(b);

return defineClass(name, b, 0,b.length);

} catch (IOException e) {

throw new ClassNotFoundException(name);

}

}

};

Object obj = myLoader.loadClass("com.bleum.cltest.ClassLoaderTest").newInstance();

System.out.println(obj.getClass());

System.out.println(obj instanceof com.bleum.cltest.ClassLoaderTest);

}

}