Java如何检查一个线程停止或没有? 解决方法 下面的示例演示如何使用 isAlive()方法检查一个线程是否停止. public class Main { public static void main(String[] argv) throws Exception { Thread thread = new MyThread(); thread.start(); if (thread.isAlive()) { System.out.println("Thread has not finish
理论知识很枯燥,但这些都是基本功,学完可能会忘,但等用的时候,会发觉之前的学习是非常有意义的,学习线程就是这样子的. 1.如何创建锁? Lock lock = new ReentrantLock(); 2.如何使用锁? 可以参看Lock文档,其使用格式如下: class X { private final ReentrantLock lock = new ReentrantLock(); // ... public void m() { lock.lock(); // block until c
Understanding concurrent programming is on the same order of difficulty as understanding object-oriented programming. If you apply some effort, you can fathom the basic mechanism, but it generally takes deep study and understanding to develop a true
java中,线程的状态使用一个枚举类型来描述的.这个枚举一共有6个值: NEW(新建).RUNNABLE(运行).BLOCKED(锁池).TIMED_WAITING(定时等待).WAITING(等待).TERMINATED(终止.结束). 但是我发现大多数人的理解和上面的这六种还是有些差别,通常会加上阻塞状态,可运行状态,挂起状态. 这是Thread类描述线程状态的枚举类的源代码: public enum State { /** * Thread state for a thread which