CompletableFuture stream 处理demo

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package com.hsj;

import com.google.common.collect.Lists;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.junit.jupiter.api.Test;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.stream.Collectors;

/**
 * @author hsj
 * @description:CompletableFuture stream 处理demo
 * @date 2023-8-31 14:53
 */
public class StreamTest {
    @Test
    public void test(){
        ArrayList<String> list = Lists.newArrayList("H", "S", "J");

        //返回值
        list.stream()
                .map(
                        (str) -> CompletableFuture.supplyAsync(
                                () -> String.format("%s-return-value",str)
                        )
                )
                .collect(Collectors.toList())
                .stream()
                //等待每一个CompletableFuture线程完成
                .map(CompletableFuture::join)
                .collect(Collectors.toList())
                .forEach(System.out::println);


        //没有返回值
        ArrayList<STestBean> list002 = Lists.newArrayList(
                STestBean.builder().build(),
                STestBean.builder().build(),
                STestBean.builder().build());
        list002.stream()
                .map(
                        (sTestBean) -> CompletableFuture.runAsync(
                                () -> {
                                    sTestBean.setAge(18);
                                    sTestBean.setName("HSJ");
                                }
                        )
                ).collect(Collectors.toList())
                .stream()
                .map(CompletableFuture::join);
        list002.stream().forEach((sTestBean) -> System.out.println(sTestBean));
    }
}

@AllArgsConstructor
@NoArgsConstructor
@Builder
@Data
class STestBean{
    private int age;
    private String name;
}