同时调用多个返回返回对象的方法

Question

调用多个方法，我想同时调用它们，应该等待彼此完成。else {    PricingFromS4Request pricingRequest = new PricingFromS4Request();    ProductFromS4Request productRequest = new ProductFromS4Request();    PricingFromS4ServiceImpl service = new PricingFromS4ServiceImpl();    //Create 1 thread for below line    pricingRequest = service.createS4PricingRequest(ABeanObject, SomeArrayList);    //Create 1 more thread for below line    productRequest = service.createS4ProductRequest(SomeList);    //Send pricingRequest and productRequest  into another method     SomeMethod(pricingRequest,productRequest);}无法将两行放在线程内

Answer 1

在 Java 7 中，这将是一个选项：

    PricingFromS4Request pricingRequest = new PricingFromS4Request();

    ProductFromS4Request productRequest = new ProductFromS4Request();

    PricingFromS4ServiceImpl service = new PricingFromS4ServiceImpl();

    ExecutorService executor = Executors.newFixedThreadPool(2);

    Future<PricingFromS4Request> f1 = executor.submit(new Callable<PricingFromS4Request >() {

        public PricingFromS4Request  call() {

            return service.createS4PricingRequest(ABeanObject, SomeArrayList);

        }

    });

    Future<ProductFromS4Request> f2 = executor.submit(new Callable<ProductFromS4Request>() {

        public ProductFromS4Request call() {

            return service.createS4ProductRequest(SomeList);

        }

    });

    SomeMethod(f1.get(), f2.get());

    executor.shutdown();