Java基础多线程之单例模式之饿汉式：

class SingleDemo
{
    public static void main(String[] args)
    {
        for(int i=1;i<10;i++)
        {
            Thread t1 = new Test();
            t1.start();
        }
    }
}

class Test extends Thread
{
    public void run()
    {
        Single single = Single.getInstance();
        System.out.println(this.getName() + " getInstance:"+single);
    }
}

class Single
{
    private static final Single SINGLE = new Single();
    
    private Single(){}
    
    public static Single getInstance()
    {
        return SINGLE;
    }
}