java基础之类初始化顺序示例解析

public class House {
    // 构造器之前
    Window w1 = new Window(1);
    House(){
        System.out.println("House()");
        Window window = new Window(11);
    }
    // 构造器之后
    Window w2 = new Window(2);
    void f(){
        System.out.println("f()");
    }
    Window w3 = new Window(3);
    public static void main(String[] args) {
        House house = new House();
        house.f();
    }
}
public class Window {
    public Window(int mark){
        System.out.println("Window("+mark+")");
    }
}

public class Initable {
    // 非编译期常量
    public static final int COUNT =new Random().nextInt(1000);
    static {
        System.out.println("Initable初始化");
    }
}
public class Initable1 {
    // 编译期常量
    public static final int COUNT = 47;
    static {
        System.out.println("Initable1初始化");
    }
}
public class Initable2 {
    public static int COUNT = 56;
    static {
        System.out.println("Initable2初始化");
    }
}
public class Initable3 {
    public static int COUNT = 33;
    static {
        System.out.println("Initable3初始化");
    }
}
public class Initable4 {
    public static int COUNT = 44;
    static {
        System.out.println("Initable4初始化");
    }
}
public class Test {
    public static void main(String[] args) throws ClassNotFoundException, IllegalAccessException, InstantiationException {
        System.out.println("Initable---------------");
        System.out.println(Initable.COUNT);
        System.out.println("Initable1---------------");
        System.out.println(Initable1.COUNT);
        System.out.println("Initable2---------------");
        System.out.println(Initable2.COUNT);
        System.out.println("Initable3---------------");
        Class<Initable3> clazz = Initable3.class;
        System.out.println("Initable4---------------");
        Class.forName("com.zhanghe.study.init.Initable4");
    }
}