java 并发编程网站 ：http://ifeve.com/java-7-concurrency-cookbook/
一：
1：JVM线程状态
NEW, RUNNABLE, BLOCKED, WAITING, TIMED_WAITING, TERMINATED
BLOCKED是等待获得对象锁
WAITING是调用了wait, sleep, park
2：
sleep， 进入TIMED_WAITING状态，不出让锁
wait, 进入TIMED_WAITING状态，出让锁，并进入对象的等待队列
park, 进入WAITING状态，对比wait不需要获得锁就可以让线程WAITING，通过unpark唤醒
interrupt, 只是给线程发个信号，如果在wait, sleep会收到exception
yeild, 在操作系统层面让线程从running变成ready状态，等待继续被调度。在jvm的线程状态还是RUNNABLE
二：代码实现
package com.tc;
import java.util.concurrent.locks.LockSupport;
public class ThreadPark {
public static void main(String[] args) {
MyThread mt = new MyThread();
mt.start();
try {
Thread.currentThread().sleep(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
mt.park();
System.out.println("canyou get here?");
try {
Thread.currentThread().sleep(10000);
} catch (InterruptedException e) {
e.printStackTrace();
}
mt.unPark();
}
static class MyThread extends Thread {
private boolean isPark = false;
public void run() {
while (true) {
if (isPark)
LockSupport.park();
System.out.println("running....");
}
}
public void park() {
isPark = true;
}
public void unPark() {
isPark = false;
LockSupport.unpark(this);
}
}
}