Java8新特性之Joining

package com.lsy;import java.util.Arrays;import java.util.List;import java.util.stream.Collectors;/*** @author lsy* @email 15239218175@* @deprecation java8新特性 joining*/public class demo01 {public static void main(String[] args) {List<String> list = Arrays.asList("springMvc", "springBoot", "springCloud");String result = list.stream().collect(Collectors.joining());System.out.println(result);String result2 = list.stream().collect(Collectors.joining("||"));System.out.println(result2);}}

类似StringBuilder起到拼接的作用

源码附上

joining函数接受三个参数，分别是元素之间的连接符、前缀、后缀。

Stream.of("springboot","springcloud","springmvc").collect()

返回结果如下图所示：