The two programs say both are implemented with the same logic namely, in one program, creating thread by extending Thread class and the other by implementing Runnable interface. Here the output will be like "Print some values till i press ENTER or RETURN key", My problem is, when i run these two programs "program where we are creating Thread by extending Thread class will by halt
这两个程序都说，两者都是用相同的逻辑实现的，即在一个程序中，通过扩展Thread类创建线程，并通过实现Runnable接口创建线程。 这里的输出将像“打印一些值，直到我按ENTER或RETURN键”，我的问题是，当我运行这两个程序“我们正在创建线程通过扩展线程类的程序将停止扩展线程类打印值直到我按ENTER / RETURN但是“程序中我们说的都是创建带有Runnable接口输出的线程正在停止” 这两个程序中的逻辑是相同的，唯一不同的是扩展Thre
I need a solution to properly stop the thread in Java. I have IndexProcessor class which implements the Runnable interface: public class IndexProcessor implements Runnable { private static final Logger LOGGER = LoggerFactory.getLogger(IndexProcessor.class); @Override public void run() { boolean run = true; while (run) { try { LOGGER.deb
我需要一个解决方案来正确地停止Java中的线程。 我有实现Runnable接口的IndexProcessor类： public class IndexProcessor implements Runnable { private static final Logger LOGGER = LoggerFactory.getLogger(IndexProcessor.class); @Override public void run() { boolean run = true; while (run) { try { LOGGER.debug("Sleeping..."); Thr
When I run this program public class Fabric extends Thread { public static void main(String[] args) { Thread t1 = new Thread(new Fabric()); Thread t2 = new Thread(new Fabric()); Thread t3 = new Thread(new Fabric()); t1.start(); t2.start(); t3.start(); } public void run() { for(int i = 0; i < 2; i++) System.out.print(T
当我运行这个程序 public class Fabric extends Thread { public static void main(String[] args) { Thread t1 = new Thread(new Fabric()); Thread t2 = new Thread(new Fabric()); Thread t3 = new Thread(new Fabric()); t1.start(); t2.start(); t3.start(); } public void run() { for(int i = 0; i < 2; i++) System.out.print(Thread.c
I need a simple lock, with timeout for JavaME (the backport of concurrent.lock needs full Java 1.3). If someone else has already released tested locking code for JavaME, I would much rather use that. Locking is notoriously difficult, so I thought I'd ask whether the following code is sane: public class TimedLock { private volatile Thread holder = null; private Vector waiters = n
我需要一个简单的锁，JavaME超时（concurrent.lock的backport需要完整的Java 1.3）。 如果其他人已经为JavaME发布了经过测试的锁定代码，我宁愿使用它。 锁定非常困难，所以我想我会问下面的代码是否理智： public class TimedLock { private volatile Thread holder = null; private Vector waiters = new Vector(); public void lock(long ms) { synchronized (this) { if (holder == n
Seeing various locking related question and (almost) always finding the 'loop because of spurious wakeups' terms1 I wonder, has anyone experienced such kind of a wakeup (assuming a decent hardware/software environment for example)? I know the term 'spurious' means no apparent reason but what can be the reasons for such kind of an event? (1 Note: I'm not questioning the loo
看到各种与锁定有关的问题和（几乎）总是找到'因为虚假唤醒'术语而导致的'循环'我想知道，有没有人经历过这种唤醒（假设一个体面的硬件/软件环境）？ 我知道“虚假”这个词的意思没有明显的原因，但是这种事件的原因是什么？ （1注：我不质疑循环练习。） 编辑：帮手问题（对于喜欢代码示例的人）： 如果我有以下程序，并运行它： public class Spurious { public static void main(String[] args) {
I've a Dynamodb table with streaming enabled. Also I've created a trigger for this table which calls an AWS Lambda function. Within this lambda function, I'm trying read the new image (Dynamodb item after the modification) from the Dynamodb stream and trying to get the pure json string out of it. My Question is how can i get the pure json string of the DynamoDB item that's been
我有一个启用了流式传输的Dynamodb表。 此外，我还为此表创建了一个触发器，用于调用AWS Lambda函数。 在这个lambda函数中，我试图从Dynamodb流中读取新图像（修改后的Dynamodb项目），并尝试从中取出纯json字符串。 我的问题是如何获取通过流发送的DynamoDB项目的纯json字符串？ 我正在使用下面给出的代码片段来获取新的图像，但我不知道如何获取json字符串。 感谢你的帮助。 public class LambdaFunctionHandler implemen
consider the following code: @Test public void testDeadCode() { letsThrow(); System.out.println("will never be reached"); } private final void letsThrow() { throw new RuntimeException("guess you didnt see this one coming"); } To me it seems absolutely impossible that the println() would ever be executed - as the call to letsThrow() will always throw an exception. Thus I am a)
考虑下面的代码： @Test public void testDeadCode() { letsThrow(); System.out.println("will never be reached"); } private final void letsThrow() { throw new RuntimeException("guess you didnt see this one coming"); } 对我来说，println（）永远不会被执行 - 因为对letsThrow（）的调用总是会抛出一个异常。 因此我是 a）惊讶的是编译器不能告诉我“这是死代码” b）想知道是否有一些编译器标志
This question already has an answer here: “implements Runnable” vs. “extends Thread” 40 answers While creating a thread implementing Runnable interface is better. Because you can extend your new class from other class, otherwise you can not extend it. Extending a Thread is better if you want to retain some control over the thread's work, like calling interrup() . In general, I'd s
这个问题在这里已经有了答案： “实现可运行”与“扩展线程”40个答案 创建一个实现Runnable接口的线程更好。 因为你可以从其他课程扩展你的新课程，否则你不能扩展它。 如果你想保留对线程工作的一些控制，比如调用interrup() ，那么扩展线程就更好了。 一般来说，我认为当类是某种经理或工人时，扩展一个Thread是可以的。 在其他情况下，尤其是当一个类代表一些要完成的工作时（ Job ， Future ），实现可运行性更好 。
This question already has an answer here: “implements Runnable” vs. “extends Thread” 40 answers In general you should not extend Thread , but implement Runnable instead. Your example would then become: class MyRunnable implements Runnable { public void run() { // Whatever needs to be done. } } MyRunnable obj = new MyRunnable(); Thread t = new Thread(obj); t.start() Yes, there
这个问题在这里已经有了答案： “实现可运行”与“扩展线程”40个答案 一般来说，你不应该扩展Thread ，而应该实现Runnable 。 你的例子会变成： class MyRunnable implements Runnable { public void run() { // Whatever needs to be done. } } MyRunnable obj = new MyRunnable(); Thread t = new Thread(obj); t.start() 是的，是有区别的：你不应该延长Thread ，但使用new Thread(myRunnable) 这与您的第
Possible Duplicate: Java: “implements Runnable” vs. “extends Thread” Java provides two options to create a Thread class ie either by implementing Runnable or by extending Thread class. I know there can be many reasons to implement a Runnable but not sure where the scenario would be to extend a Thread class to create own Thread class? Could you please provide me scenarios where extending T
可能重复： Java：“实现Runnable”与“扩展线程” Java提供了两个选项来创建一个Thread类，即通过实现Runnable或扩展Thread类。 我知道可以有很多原因来实现一个Runnable，但不知道场景将扩展一个Thread类来创建自己的Thread类吗？ 你能否给我提供扩展Thread似乎是可行或更好的选择或有利的方案...... 线程上出现了一个问题，但这并没有回答我的问题 几乎没有理由扩展线程，基本上你想要扩展线程的唯一原因是如果你要覆