一个小java反射程序,简单的调用方法。

import java.lang.reflect.*;

public class InvokeTester{

public int add(int param1, int param2) {

return param1 + param2;

}

public String echo(String msg) {

return "echo:" + msg;

}

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

Class classType = InvokeTester.class;

Object invokeTester = classType.newInstance();

// 调用InvokeTester对象的add()方法

Method addMethod = classType.getMethod("add", new Class[] { int.class, int.class });

Object result = addMethod.invoke(invokeTester, new Object[] { new Integer(100), new Integer(200) }); System.out.println((Integer) result);

// 调用InvokeTester对象的echo()方法

Method echoMethod = classType.getMethod("echo", new Class[] { String.class });

result = echoMethod.invoke(invokeTester, new Object[] { "Hello" });

System.out.println((String) result); } }