Java多线程callable

继承callable接口，实现call()方法

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;

public class ThreadUtil implements Callable<List>{

    private List result = new ArrayList();

    /**
     *
     * @param cls 需要执行的类
     * @param methodName 需要执行的方法
     * @param t 方法的参数类型
     * @param object 方法参数
     */
    public ThreadUtil(Class<?> cls,String methodName,Class<?>[] t,Object... object){
        try {
            //需要执行的类
            Object obj = cls.newInstance();
            //需要执行的方法
            Method method = cls.getMethod(methodName,t);
            //执行方法
            result.add(method.invoke(obj,object));
        }  catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Override
    public List call() throws Exception {
        return result;
    }
}

 

 再写一个类，建个main()方法调用

 public static void main(String[] args) {
        try {
            List res = new ArrayList();
            String name1 = "lili";
            String name2 = "xxxx";
            String name3 = "aoao";
            Integer age = 2;
            Person p = new Person();
//            p.setContent(name1);
            p.setAge(1);
            Class[] classes = {String.class,Integer.class};
            List list = new ArrayList();
            list.add(new ThreadUtil(User.class,"say",classes,name1,age));
//            p.setContent(name2);
            list.add(new ThreadUtil(User.class,"say",classes,name2,3));
//            p.setContent(name3);
            list.add(new ThreadUtil(User.class,"say",classes,name3,4));
            ExecutorService executorService = Executors.newFixedThreadPool(10);
            List<Future<List>> futures = executorService.invokeAll(list);
            if(futures!=null && futures.size()>0){
                for (Future<List> future:futures){
                    res.addAll(future.get());
                }
            }
            executorService.shutdown();//关闭线程池
            for(Object object : res){
                System.out.println(object);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }