Java.nio.charset 提供了编码解码一套解决方案,以http为例,向百度发送请求,并正常的显示。使用到了Charset编码 1packagenio.readpage;23importjava.nio.ByteBuffer;4importjava.nio.channels.SocketChannel;5importjava.nio.charset.Charset;6importjava.net.InetSocketAddress;7importjava.io.IOException;8publicclassBaidu...
to wait for its completion, and to retrieve the result of the computation. In simple terms, a future is promise to hold the result of some operation once that operation completes.Futurewas introduced in Java 5.
下面是一个使用Future和Callable的例子: importjava.util.concurrent.*;publicclassFutureAndCallableExample{publicstaticvoidmain(String[] args)throwsExecutionException, InterruptedException {ExecutorServiceexecutor=Executors.newSingleThreadExecutor(); Future<Integer> future = executor.submit(newCallable<Integer>() {@...
packagebasic.thread;importorg.junit.platform.commons.util.ExceptionUtils;importjava.util.concurrent.*;publicclassFutureDemo{publicstaticvoidmain(String[]args)throws ExecutionException,InterruptedException,TimeoutException{ExecutorService executorService=Executors.newFixedThreadPool(2);Future<?>future=executorService.su...
* run method to be called in that separately executing * thread. * * The general contract of the method run is that it may * take any action whatsoever. * * @see java.lang.Thread#run() */publicabstractvoidrun();} void返回值,且run方法,没有 throws ...
importjava.util.concurrent.Executors; publicclassMain { publicstaticvoidmain(String[] args) { // Example 1: Simple CompletableFuture CompletableFuture<String> future = CompletableFuture.supplyAsync(() ->"Hello") .thenApplyAsync(s -> s +" World"); ...
java---Future Callable 通过Runable和Thread, 无法获取子线程的运行结果。 Java5 引入了java.util.concurrent, 可以获取到子线程的运行结果。 Future接口可以理解成一个任务, Future.get()方法可以获取任务的运行结果 虽然submit(task)是异步的,但是get()依旧是堵塞的,调用了get方法才执行call()方法。所以callable虽...
Java.Interop.Expressions Java.Interop.Tools.JavaCallableWrappers Java.IO Java.Lang Java.Lang.Annotation Java.Lang.Invoke Java.Lang.Ref Java.Lang.Reflect Java.Lang.Runtimes Java.Math Java.Net Java.Nio Java.Nio.Channels Java.Nio.Channels.Spi ...
java.lang.Object java.util.concurrent.CompletableFuture<T> All Implemented Interfaces: CompletionStage<T>, Future<T> public class CompletableFuture<T> extends Object implements Future<T>, CompletionStage<T> A Future that may be explicitly completed (setting its value and status), and may be used ...
Java 8 has introduced a new abstraction based onFutureto run asynchronous tasks –CompletableFutureclass. It basically came to overcome the issues of the oldFutureAPI. In this tutorial, we’re going to look into the ways to work with exceptions when we useCompletableFuture. ...