First, the concept understanding
(1) What is the parallel, concurrent?
并行：即通过多个CPU，让多个线程共同运行
并发：微观上来看，并不是多个线程共同运行，而是每个线程允许占用的CPU时间非常短（用户感觉不出），让多个线程轮流使用CPU。
(2) What is the throughput?
吞吐量是指对网络、设备、端口、虚电路或其他设施，单位时间内成功地传送数据的数量。
Second, the thread implementation methods
(1) Tread class inheritance, overriding the run method
public class ThreadA extends Thread{
public void run(){
super.run();
…
}
}
(2) to achieve Runnable interface, run method
public class ThreadB implements Runnable{
public void run(){
…
}
}
(3) implement Callable interface, call method
public class implements Callable{
public String call() throw Exception{
…
}
}
Third, the thread interrupt mechanism
(1) calls Thread.stop (), insecure, not recommended
(2) the use of Thread.interrupt (), needs to be interrupted thread to make their own treatment
