转换为

/**时代Java公众号 - N o w J a  v a . c o m**/

//package com.nowjava;


public class Main {

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

        Class clazz = String.class;

        Object obj = "nowjava.com";

        System.out.println(castAs(clazz, obj));

    }


    public static <T> T castAs(Class<T> clazz, Object obj) {

        if (obj == null) {

            return null;

        }


        try {/*from 时 代 J a v a - nowjava.com*/

            // Try cast.

            if (clazz.isInstance(obj)) {

                return clazz.cast(obj);

            }