????Java??????????

???????????? ???????[ 2012/11/8 10:25:54 ] ????????

????????Sub.B?ж?????????????????Sub??????г????????????丸??Parent?????г??????????Parent???????A=2??????B=2??????????????

    static class Parent{
        <clinit>(){
            public static int A=1;
            static{
                A=2;
            }
        }
    }
    static class Sub extends Parent{
        <clinit>(){ //jvm??????????÷?????????????????
        public static int B=A;
        }
    }
    public static void main(String[] args){
        System.out.println(Sub.B);
    }

????<clinit>();???????????????????????????????????????ж?????????и??????о??????飬<clinit>()?????????????????ɡ?

?????????????治?????static{}??????????飬????????????????????????????????????????????????????<clinit>()??????????????????????????????<clinit>();??????????????и?????<clinit>();??????????????ж?????????????????????????????

??????????????????????????????????????н???<clinit>()????????

????????jvm?????????<clinit>();???????????????????????????????<?????????????????>??

????????????????????￡?

    public class DeadLoopClass {

        static{
            if(true){
            System.out.println("??? ["+Thread.currentThread()+"] ????????????????????????");
            while(treu){}
            }
        }

        /**
         * @param args
         */
        public static void main(String[] args) {
            // TODO Auto-generated method stub
            System.out.println("toplaile");
            Runnable run=new Runnable(){

                @Override
                public void run() {
                    // TODO Auto-generated method stub
                    System.out.println("["+Thread.currentThread()+"] ??????????????");
                    DeadLoopClass d=new DeadLoopClass();
                    System.out.println("["+Thread.currentThread()+"] ???????????????????");

                }};

                new Thread(run).start();
                new Thread(run).start();
        }

    }