1 Runnable没有返回值的FunctionalInterface(jdk 1.8概念)接口,相反Callable是有返回值的FunctionalInterface接口 2 Runnable + Thread 创建一个无返回结果的任务线程 3 Runnable + Callable +Thread 创建一个有返回结果的任务线程 一:Runnable 示例 创建一个无返回结果的任务线程,so eazy !!! publicstaticvoidmain...
* The Callable interface is similar to {@link * java.lang.Runnable}, in that both are designed for classes whose * instances are potentially executed by another thread. A * Runnable, however, does not return a result and cannot * throw a checked exception. * * The {@link Executors} c...
步骤2:通过Runnable对象或Callable对象将任务提交给ExecutorService对象: 代码语言:javascript 复制 Future<Integer>submit(Callable<Integer>task);注释:Future是一个接口,它的定义如下: public interface Future { V get() throws …; V get(long timeout, TimeUnit unit) throws …; void cancle(boolean mayInterrup...
<T> Future<T> submit(Callable<T> task); <T> Future<T> submit(Runnable task, T result); Future<?> submit(Runnable task); ... } Java代码 public interface Callable<V> { /** * Computes a result, or throws an exception if unable to do so. * * @return computed result * @throws ...
}// RunnableFuture接口publicinterfaceRunnableFuture<V>extendsRunnable, Future<V> {voidrun(); } ok~,到目前为止我们可以发现,FutureTask构造器中可以接收一个Callable类型的对象,而FutureTask实现了Runnable,Future两个接口,所以当我们创建了一个Callable类型的任务时,可以先封装成一个FutureTask对象,再将封装好的Future...
说说Runnable与Callable Callable接口: publicinterfaceCallable<V>{Vcall()throwsException;} 1. 2. 3. Runnable接口: publicinterfaceRunnable{publicabstractvoidrun();} 1. 2. 3. 相同点: 两者都是接口; 两者都可用来编写多线程程序; 两者都需要调用Thread.start()启动线程;...
二者均是 interface, 描述了一个任务 Runnable 描述的是不带返回值的任务 Callable 描述的是带返回值的任务 Callable 接口实现类中的 run() 方法允许向上抛出, 也可在内部处理 (try catch) Runnable 接口实现类中 run() 方法的异常必须在内部处理, 不能抛出 ...
Runnable和Callable的主要区别 Callable源码解释如下: *The{@codeCallable}interfaceissimilarto{@link*java.lang.Runnable},inthat both are designedforclasses whose*instances are potentially executedbyanother thread.A*{@codeRunnable},however,does notreturna resultandcannot*throwa checked exception. 即Callable...
Callable接口和Runnable接口 1、 public interface Executor { /** * Executes the given command at some time in the future. The command * may execute in a new thread, in a pooled thread, or in the calling * thread, at the discretion of the Executor implementation. * * @param...
1) Callable接口 publicinterfaceCallable<V>{Vcall()throws Exception;} 2) Runnable接口 publicinterfaceRunnable{publicabstractvoidrun();} 2 不同点和相同点 1)相同点 都是接口,都可编写多线程程序,都是调用Thread.start()启动线程 2)不同点 Callable可以返回执行结果,是个泛型,与Future、FutureTask配合可以通过...