Java学习笔记——thread派生类的适用

import java.io.*;

public class TryThread extends Thread {

/**
* @param args
*/
public TryThread(String firstName, String secondName, long delay) {
this.firstName = firstName;
this.secondName = secondName;
aWhile = delay;
/*
* 所谓守护线程，是指在程序运行的时候在后台提供一种通用服务的线程，比如垃圾回收线程就是一个很称职的守护者，
* 并且这种线程并不属于程序中不可或缺的部分。因此，当所有的非守护线程结束时，程序也就终止了，同时会杀死进程中的所有守护线程。
* 反过来说，只要任何非守护线程还在运行，程序就不会终止
*/
setDaemon(true);
// setDaemon是将此进程标记为守护进程，如果设置为true则设置为守护进程，如果为false则为用户进程
}

public static void main(String[] args) {
// TODO 自动生成方法存根
Thread first = new TryThread("Hopalong", "Cassidy", 200L);
Thread second = new TryThread("Marilyn", "Monroe", 300L);
Thread third = new TryThread("Slim", "Pickens", 500L);
System.out.println("Please Enter when you have had enough……\n");
first.start();
second.start();
third.start();
try {
System.in.read();
System.out.println("Enter pressed……\n");

} catch (IOException e) {
System.out.println(e);
}
System.out.println("Ending main()");
return;
}

@Override
public void run() {
try {
while (true) {
System.out.print(firstName);
sleep(aWhile);//让此进程进入休眠，休眠时间为awile

System.out.print(secondName + "\n");
}
} catch (InterruptedException e) {
System.out.println(firstName + secondName + e);
}
}

private String firstName;

private String secondName;

private long aWhile;

}