java classloader实例

贴一个java classloader的小例子

 

package com.basic;

import junit.framework.TestCase;

public class MyClassLoaderTest extends TestCase {
	
	public MyClassLoaderTest(){}
	
	public void testClass() throws ClassNotFoundException {
		Class b = String[].class;
		System.out.println(b);
		Class c = new String().getClass();
		System.out.println(c);
		//数组的实际类名编码为：左括号 + 类别代码 + 类名 + 分号
		c = Class.forName("[Ljava.lang.String;");
		System.out.println(c);
		assertNotNull(c);
	}
	
	public void testClassLoader(){
		ClassLoader cl = ClassLoader.getSystemClassLoader();
		try {
			Class c = cl.loadClass("com.basic.TestClass");
			TestClass tc = (TestClass) c.newInstance();
			
			tc.sayHello();
		} catch (Exception e) {
			// TODO: handle exception
		}
	}
}