类的新实例，泛型类型

/**from 时   代     Java  公  众  号 - nowjava.com**/

//package com.nowjava;


public class Main {

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

        Class clazz = String.class;

        System.out.println(newInstance(clazz));

    }


    public static <T> T newInstance(Class<T> clazz) {

        try {

            return clazz.newInstance();

        } catch (InstantiationException e) {

            throw new RuntimeException(e);

        } catch (IllegalAccessException e) {