java 获取线程状态 判断线程是否已启动详解编程语言

public class Test extends Thread { 
	public void run() { 
		printMsg(); 
	} 
 
	public void printMsg() { 
		// 获得运行此代码的线程的引用 
		Thread t = Thread.currentThread(); 
		String name = t.getName(); 
		System.out.println("name = " + name); 
	} 
 
	public static void main(String[] args) { 
		Test t = new Test(); 
		t.setName("MyThread"); 
		System.out.println("线程状态 = " + t.isAlive()); 
		t.start(); 
		System.out.println("线程已启动..."); 
		System.out.println("线程状态 = " + t.isAlive()); 
	} 
}