code block execution order.

Class father1{

static{
System.out.println ("..... static Father ...");
}

{
System.out.println ("... Parent class non-static ... ");
}

Public Father1 () {
SYSTEM.OUT.PRINTLN ("---the construction method of the parent class----");
}
}

Class Son1 extends father1{

static{
System.out.println ("..... static Son ...");
}



Public Son1 () {
SYSTEM.OUT.PRINTLN ("---sub-class construction method-----");
}
{
System.out.println ("... Sub-class non-static ... ");
}
}

public class Demo3 {

static{
System.out.println (".... Main function static code ... ");
}

{
System.out.println ("... Main function non---------static code ... ");
}

public static void Main (string[] args) {

Son1 s = new Son1 ();
SYSTEM.OUT.PRINTLN ("----output completed-------");
Demo3 d = new Demo3 ();
}

}

Execution Result:

.... Main function static code .....
.... static Father .....
.... static Son .....
..... Parent class non-static ...
---The Parent class construction method----
..... Sub-class non-static ...
---sub-class construction method-----
----output is complete-------
..... Main function non---------static code ...

So the order is:

Executes a static block of code from the same class as the main function.

Executes a static block of code from the parent class.

Executes a static block of code from a subclass.

A non-static block of code is executed before the new object, before constructing the method;

Parent class Construction Method

Sub-class non-static

Sub-class construction methods

code block execution order.