JAVA反射机制事例二

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class Test {
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try {
			Class cls = com.lwf.util.CommonUtil.class;
			Object obj = cls.newInstance();
			Method addMethod = cls.getMethod("add", new Class[]{int.class,int.class});
			Object value = addMethod.invoke(obj, new Object[]{new Integer(12),new Integer(23)});
			System.out.println((Integer)value);
		} catch (InstantiationException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (SecurityException e) {
			e.printStackTrace();
		} catch (NoSuchMethodException e) {
			e.printStackTrace();
		} catch (IllegalArgumentException e) {
			e.printStackTrace();
		} catch (InvocationTargetException e) {
			e.printStackTrace();
		}
	}
}
package com.lwf.util;
public class CommonUtil {
	public static void getName(){
		System.out.println("this is a getName function");
	}
	
	public void getMethod(){
		System.out.println("this is a getMethod funciton");
	}
	
	public int add(int m ,int n){
		return m + n;
		
	}
}