java反射中Method类invoke方法的使用方法

package com.zsw.test;

import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;

/**
* Title: java反射中Method类invoke方法的使用方法 *
* Description: *
* Copyright: Copyright (c) 2009 *
* Company: 嘉盈公司 *
* @author zsw
* @version 1.0
*/
public class InvokeTester {

 private String name;

 public void setName(String name){
 this.name = name;
 }
 public String getName(){
 return name;
 }

 public InvokeTester() {
 }

    public int add(int param1, int param2) {
        return param1 + param2;
    }
    public String echo(String mesg) {
        return "echo" + mesg;
    }

    public static void main(String[] args) {
        Class classType = InvokeTester.class;
        try {
            Object invokertester = classType.newInstance();   //1

            Method addMethod = classType.getMethod("add", new Class[] { //2
                    int.class, int.class
            });

            Object result = addMethod.invoke(invokertester, new Object[] {        //3
                                             new Integer(100), new Integer(200)
            });

System.out.println(result);
 //////////////////////
 Method echo = classType.getMethod("echo", new Class[] {String.class});
 Object obj = echo.invoke(invokertester,
 new Object[] {new String("jy is very good!!!")});
 System.out.println(obj.toString());

 ////////////////////
 InvokeTester test = new InvokeTester(); //1
 test.setName("黄翊"); //2

 //Method[] methods;
 Method[] methods = test.getClass().getDeclaredMethods(); //3

 //循环查找获取id方法，并运行查看是否有返回值
 for (int i = 0; i < methods.length; i++) {

 //假设此方法有get和Idkeyword则运行
 if (methods[i].getName().indexOf("get") != -1 && methods[i].getName().indexOf("Name") != -1) {
 try{
 // 获取此get方法返回值,推断是否有值,假设没有值说明即将运行的操作新增
 if (methods[i].invoke(test, null) == null) { //4
 System.out.println("此对象没有值！！！");
 } else {
 Object strName = methods[i].invoke(test, null);
 System.out.println(strName);
 }
 }catch(Exception e){
 System.out.print("");
 }
 }
 }
 } catch (IllegalAccessException ex) {
 } catch (InstantiationException ex) {
 } catch (SecurityException ex) {
 } catch (NoSuchMethodException ex) {
 } catch (InvocationTargetException ex) {
 } catch (IllegalArgumentException ex) {
 }
 }
}