Java Initialization constructor Call order

The sequence of constructor calls when class initialization:

(1) The storage space of the initialized object is zero or null value;
(2) Call the parent class constructor;
(3) The initialization expressions of class member variables and instance member variables are called sequentially;
(4) Call the constructor itself .

Example:
public class Dollar extends money{
RMB r=new RMB ()
Public Dollar () {
System.out.println ("Dollar is construct!");
}
public static void Main (string[] args) {

New Dollar ();

}
}

Class money{
Public money () {
System.out.println ("Money is construct");
}
}

Class rmb{
Public Rmb () {
System.out.println ("RMB is construct");
}
}

Output Result:
Money is construct
$ is construct
Dollar is construct!

we'll write a program ourselves to test the order of the run:

Output Result:

Parent Class The class member variable description is now run in the following order:

1. Parent class static Block
2. Self- class member variables
3. Self-static block
4. Parent class Instance member variable
5. Parent Class Block
6. Parent class constructor
7. Self instance member variables
8. Self block
9. Self-constructor

Java Initialization constructor Call order