Initialization order in Java (static member, static initialization block, normal member, normal initialization block, constructor)

This article links http://blog.csdn.net/xiaodongrush/article/details/29170099

References Article http://my.oschina.net/leoson/blog/103251

1. The order of initialization in a class

(static variable, static initialization block) = = (variable, initialization block, constructor).

2. Two initialization order with an inheritance relationship class

The parent class (static variable, static initialization block) is the subclass (static variable, static initialization block) and the parent class (variables, initialization blocks, constructors) and subclasses (variables, initialization blocks, constructors).
The following examples illustrate:

Class A {public    a () {        System.out.println ("Constructor a");    }    {        System.out.println ("Field A");    }    static {        System.out.println ("Static A");}    } public Class B extends A {public    B () {        System.out.println ("Constructor B");    }    {        System.out.println ("Field B");    }    static {        System.out.println ("Static B");    }    public static void Main (string[] args) {        new A ();        New B ();    }}

Results of new A ()

Static A
Static B
Field A
Constructor A

As a result of new B (), static members and static initialization blocks will only run once.

Field A
Constructor A
Field B
Constructor B

Initialization order in Java (static member, static initialization block, normal member, normal initialization block, constructor)