Java初始化顺序

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先初始化父类的静态代码--->初始化子类的静态代码-->初始化父类的非静态代码--->初始化父类构造函数--->初始化子类非静态代码--->初始化子类构造函数

测试代码：

abstract class base
{
    public int age=getNumber(100);
    static{
        System.out.println("base static block");
    }

    {
        System.out.println("base nonstatic block");
    }
    static int sage=getNumber(50);
    base(){
        System.out.println(age);
        System.out.println("base start");
        draw();//会调用子类覆盖后的方法，这儿是0！
        System.out.println("base end");
    }
    static int getNumber(int base){
        System.out.println("base.getNumber int"+base);
        return base;
    }
    public void draw(){
        System.out.println("base.draw");
        }
}

public class initializeOrder extends base{
    public int age=getNumber(1001);
    private int _radius=getNumber(10);
    static int sage=getNumber(250);
    static{
        System.out.println("subclass static block");
    }
    {
        System.out.println("subclass nonstatic block");
    }
    initializeOrder(int radius){
        _radius=radius;
        System.out.println(age);
        draw();//这儿是1000
        System.out.println("initializeOrder initialized");
    }
    public void draw(){
        System.out.println("initializeOrder.draw "+_radius);
        }
    public static void main(String[] args) {        // TODO Auto-generated method stub
        new initializeOrder(1000);

}

输出为：

base static block
base.getNumber int50
base.getNumber int250
subclass static block
base.getNumber int100
base nonstatic block
100
base start
initializeOrder.draw 0
base end
base.getNumber int1001
base.getNumber int10
subclass nonstatic block
1001
initializeOrder.draw 1000
initializeOrder initialized