Internal static class load order and inner class

 Look at the code:

public class Test {
    public static void main(String[] args){
        System.out.println("这是main方法");
        System.out.println("---------------------分割线-------------------");
        Outer outer = new Outer();
        System.out.println("---------------------分割线-------------------");
        System.out.println(Outer.Inner.a);

    }
}
class Outer{
    public static int n = 2;
    static{
        System.out.println("This is a static block of code!" ); 
    } 
    Static  class Inner {
         public  static  int a = 10; // not exist until after the class is loaded a
         // public static Final a = 10; // Final at compile time there is If only a call will not load the static inner class 
        static { 
            System.out.println ( "this is a static inner class!" ); 
        } 
    } 
}

 

The result is:

Static inner class and normal class load order is the same: when the class is actively called, JVM will go to initialize the class ( https://www.cnblogs.com/DDiamondd/p/10963096.html )