Java 实例 - 查看线程是否存活
以下实例演示了如何通过继承Thread类并使用currentThread()方法来检测一个线程是否存活：
/*
author by phpcodeweb.com
TwoThreadAlive.java
*/
public class TwoThreadAlive extends Thread {
public void run() {
for (int i = 0; i < 10; i++) {
printMsg();
}
}
public void printMsg() {
Thread t = Thread.currentThread();
String name = t.getName();
System.out.println("name=" + name);
}
public static void main(String[] args) {
TwoThreadAlive tt = new TwoThreadAlive();
tt.setName("Thread");
System.out.println("before start(), tt.isAlive()=" + tt.isAlive());
tt.start();
System.out.println("just after start(), tt.isAlive()=" + tt.isAlive());
for (int i = 0; i < 10; i++) {
tt.printMsg();
}
System.out.println("The end of main(), tt.isAlive()=" + tt.isAlive());
}
}
以上代码运行输出结果为：
before start(), tt.isAlive()=false
just after start(), tt.isAlive()=true
name=main
name=Thread
name=main
name=main
name=main
name=main
name=main
name=main
name=main
name=main
name=main
name=Thread
name=Thread
name=Thread
name=Thread
name=Thread
The end of main(), tt.isAlive()=true
name=Thread
name=Thread
name=Thread
name=Thread
