创建Thread对象时设置线程的名称？

Question

我是Java的新手.任何人都可以解释主方法中发生了什么？

class Demo {
    public static void main(String []args) {
        //setting a name using the constructor
        Thread t=new Thread("main"){
            //what is this? a static block?? need an explanation to this.
            {setName("DemoThread");} 
        };
        //output is DemoThread. Since it set the name again.
        System.out.println(t.getName());
    }
}

Answer 1

这一行:

{setName("DemoThread");}

被称为初始化块(或实例初始化块).它看起来像一个静态初始化程序块,但没有static关键字.它对匿名类很有用,因为它们不能有命名构造函数.更多细节可以在这里找到.