java中对象的初始化过程

class Parent{
    int num = 8;// ->3
    Parent(){
       //super();  // ->2
       //显示初始化   // ->3
	   //构造代码段   // ->4
	   show(); // ->5
	}
	
	{//  ->4
	    System.out.println("Parent constructor code run->");
	}
	
    public void show(){//被覆盖
	    System.out.println("num = " + num);
	}
}

class Child extends Parent{
    int num = 9;// ->6
	
	Child(){
	     super();// ->1
	     //显示初始化  ->6
		 //构造代码段  ->7
	     num = 10; // ->8
		 System.out.println("after Child constructor code && Child constructor num = " + num);// ->9
	}
	
	{// ->7
	   System.out.println("Child constructor code run->");
	   System.out.println("after Child constructor num = " + num);
	} 
	
	public void show(){
	    System.out.println("num = " + num);
	}
}

public class PC{
     public static void main(String[] args){
	     new Child();
	 }
}

  

posted @ 2014-07-28 10:43  hjzqyx  阅读(321)  评论(0编辑  收藏  举报