Java反射基础

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俗话说温故而知新，今天又重新温习了下反射机制，java反射基本三步走
1 通过Class.forName()或者.class方法获取类对象
2 通过Method获取method对象
3 通过invoke调用对象里的方法
附:参考之前学习时候的例子代码

package utils;import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;public class InvokeTester {    public int add(int param1, int param2)    {        return param1 + param2;    }    public String echo(String message)    {        return "hello " + message;    }    public static void main(String[] args) throws InstantiationException, IllegalAccessException, NoSuchMethodException, SecurityException, IllegalArgumentException, InvocationTargetException {        Class<?> classType = InvokeTester.class;        Object invokeTester = classType.newInstance();        System.out.println(invokeTester instanceof InvokeTester);        Method addMethod = classType.getMethod("add", new Class[] {int.class,int.class});        Object result = addMethod.invoke(invokeTester, new Object[]{1768,2434});        System.out.println((Integer)result);        System.out.println("--------------------------");        Method echoMethod = classType.getMethod("echo", new Class[]{String.class});        Object result2 = echoMethod.invoke(invokeTester,new Object[]{"tom"});        System.out.println((String)result2);    }}

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