java8 获取list对象第一个元素

import lombok.*;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class Demo {


    @Builder
    @Data
    @AllArgsConstructor
    @NoArgsConstructor
    @ToString
    static class LOL{
        //赛区
        private String area;
        //战队名称
        private String teamName;
        //战队选手
        List<String> player;

    }
    private static List<LOL> lols= new ArrayList<>();;
    static  {
         lols.add( new LOL( "LPL", "IG", Arrays.asList( "TheShy","JK","Rk","BaoLan","Ning") ));
         lols.add( new LOL( "LPL", "FPX", Arrays.asList( "Doinb","GimGoon","Tian","Lwx","Crisp") ));
         lols.add( new LOL( "LCK", "SKT", Arrays.asList( "faker","khan","child","teddy","mata") ));
    }
    public static void main(String[] args) {
        LOL lol = lols.stream().findFirst().orElse( null );
        System.out.println( lol );

    }
}

输出结果为:

Demo.LOL(area=LPL, teamName=IG, player=[TheShy, JK, Rk, BaoLan, Ning])