java运行顺序－JVM之九

简化顺序版本是：

1. 父类的静态成员赋值和静态块，代码排版先后顺序执行，只运行一次
2. 子类的静态成员赋值和静态块，代码排版先后顺序执行，只运行一次
3. 父类代码块
4. 父类构造方法
5. 子类初始化块
6. 子类构造方法

再次构造子类，将重复3/4/5/6步骤

总之：见到静态必先行－》类中代码块－》构造。

public class Hello {

static class A{

static C c =new C();

public A(){

System.out.println("A's Constructor");

}

static {

System.out.println("A's static ");

}

}

static class B extends A{

public B(){

System.out.println("B's Constructor");

}

D d = new D();

C c =new C();

static {

System.out.println("B's static ");

}

}

static class C {

public C(){

System.out.println("C's Constructor");

}

static {

System.out.println("C's static");

}

}

static class D{

public D(){

System.out.println("D's Constructor");

}

static {

System.out.println("D's static");

}

}

public static void main(String args[]){

System.out.println("start");

B b = new B();

}

}

结果：

start

C's static

C's Constructor

A's static

B's static

A's Constructor

D's static

D's Constructor

C's Constructor

B's Constructor

第二例子：

http://blog.csdn.net/wenwen091100304/article/details/49488137