Initialization order in Java [Java]

First look at the program:

1  PackageInit_cls;2 3 classa{4 5{System.out.println ("I am in the class a!");}6     Static{System.out.println ("Static is the class A"));}7 }8  Public classInit_cls {9{System.out.println ("I am in the Init_cls");}Ten     Static{System.out.println ("I am static in the Init_cls class");} One      Public Static voidMain (string[] args) { A         //TODO auto-generated Method Stub -          -A a=NewA (); theInit_cls c=Newinit_cls (); -     } -  -}

The result of the operation is:

I am static in the Init_cls class
Static is the class A
I am in the class A!
I am in the init_cls

As you can see from the results, when we just use a method in a class (the main in the init_cls used here), only the static variable is initialized, so the first output: I am static in the Init_cls class

Then, when instantiating a Class A, the static domain static is initialized, so the output: static is the Class A

After initializing the non-static domain, the output: I am in the class A!

Finally, the non-static domain in Class A is initialized only when we instantiate the Init_cls class, with the output: I am in the init_cls

These are very different from the order of initialization in Python, when a package is loaded in Python, it is initialized from top to bottom, all executed when the statement is encountered

Initialization order in Java [Java]