多线程执行任务代码示例

import org.apache.lucene.util.NamedThreadFactory;
import org.elasticsearch.common.util.concurrent.EsAbortPolicy;
import java.util.*;
import java.util.concurrent.*;
import java.util.stream.Collectors;

/**
 * @author admin
 * @version 1.0.0
 * @ClassName tsese.java
 * @Description TODO
 * @createTime 2023年08月09日 09:36:00
 */
public class tsese {
    public static void main(String[] args) {
        ThreadPoolExecutor poolExecutor = new ThreadPoolExecutor(16,16,1, TimeUnit.SECONDS,
                new ArrayBlockingQueue<>(100),new NamedThreadFactory("示例线程池"),new ThreadPoolExecutor.AbortPolicy());
        List<Callable<HashMap<Integer, Double>>> raskList = new ArrayList<>();
        int x =  1;
        int y = 2;
        raskList.add(()->{
           HashMap<Integer,Double> res = new HashMap<>();
           double c = add(x,y);
           res.put(1,c);
           return res;
        });
        try {
            List<Future<HashMap<Integer,Double>>> futures = poolExecutor.invokeAll(raskList);
            for (Future<HashMap<Integer, Double>> future : futures) {
                while (true) {
                    if (future.isDone() && !future.isCancelled()) {
                        HashMap<Integer,Double> res = future.get();
                        res.forEach((key,val)->{
                            System.out.println(key+" "+val);
                        });
                        break;
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    public static int add(int x, int y) {
        return x+y;
    }



}