从类获取接口

//package com.nowjava;
/** from 
n o w j a   v  a . c o m - 时  代  Java**/


import java.util.ArrayList;

import java.util.Arrays;


public class Main {

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

        Class clazz = String.class;

        System.out.println(java.util.Arrays.toString(getInterfaces(clazz)));

    }


    public static Class<?>[] getInterfaces(Class<?> clazz) {

        ArrayList<Class<?>> list = new ArrayList<Class<?>>();//nowjava.com - 时  代  Java 提 供

        while (clazz != null) {

            list.addAll(Arrays.asList(clazz.g