线程单列Thread

public class ThreadSingleton
{
private static ThreadLocal tl = new ThreadLocal();

ThreadSingleton(){}

public static ThreadSingleton getInstance()
{
ThreadSingleton ts = ti.get();
if(ts == null)
{
ts = new ThreadSingleton();
ti.set(ts);
}

return ts;
}
}

----------------------------------------------


public static void main(String[] args) {

ThreadSingleton ts1 = ThreadSingleton.getInstance();
ThreadSingleton ts2 = ThreadSingleton.getInstance();

System.out.println(ts1);
System.out.println(ts2);

Thread th = new Thread()
{
@Override
public void run()
{
ThreadSingleton ts3 = ThreadSingleton.getInstance();
ThreadSingleton ts4 = ThreadSingleton.getInstance();

System.out.println(ts3);
System.out.println(ts4);

}};

th.start();
}

--------------------------

Console输出


com.timer.ThreadSingleton@18a992f
com.timer.ThreadSingleton@18a992f
com.timer.ThreadSingleton@dc8569
com.timer.ThreadSingleton@dc8569