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啦啦啦啦,从头整理一遍java并发的内容.开始是基本的线程操作
线程状态切换:
新建线程:
@Test public void newTread(){ Thread t1 = new Thread(new Runnable() { @Override public void run() { System.out.println("ok..."); } }); t1.start(); }
终止线程:
Thread.stop() 不推荐使用。它会释放所有monitor
中断线程:
public void Thread.interrupt() // 中断线程
public boolean Thread.isInterrupted() // 判断是否被中断
public static boolean Thread.interrupted() // 判断是否被中断，并清除当前中断状态
public void run(){ while(true){ if(Thread.currentThread().isInterrupted()){ System.out.println("Interruted!"); break; } Thread.yield(); } } t1.start(); t1.interrupt();
sleep:
public static native void sleep(long millis) throws InterruptedException
public void run(){ while(true){ if(Thread.currentThread().isInterrupted()){ System.out.println("Interruted!"); break; } try { Thread.sleep(2000); } catch (InterruptedException e) { System.out.println("Interruted When Sleep"); //设置中断状态，抛出异常后会清除中断标记位 Thread.currentThread().interrupt(); } Thread.yield(); } }
挂起 and 继续执行:
– suspend()不会释放锁
– 如果加锁发生在resume()之前 ，则死锁发生
等待线程结束（join）和谦让(yeild)
public final void join() throws InterruptedException
public final synchronized void join(long millis) throws InterruptedException
join的本质
while (isAlive()) {
wait(0);
}
线程执行完毕后，系统会调用notifyAll();
public class JoinMain { public volatile static int i=0; public static class AddThread extends Thread{ @Override public void run() { for(i=0;i<10000000;i++); } } public static void main(String[] args) throws InterruptedException { AddThread at=new AddThread(); at.start(); at.join(); System.out.println(i); } }
synchronized
– 指定加锁对象：对给定对象加锁，进入同步代码前要获得给定对象的锁。
– 直接作用于实例方法：相当于对当前实例加锁，进入同步代码前要获得当前实例的锁。
– 直接作用于静态方法：相当于对当前类加锁，进入同步代码前要获得当前类的锁。
? Object.wait() Obejct.notify()
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原文地址：http://www.cnblogs.com/dodoJavaLearner/p/5426465.html
