Detailed explanation of the class execution sequence in Java

Source: Internet
Author: User

This document describes the execution sequence of classes in Java.
The sequence should be as follows: parent class Static> subclass static> parent class default {}-> parent class constructor-> subclass default {}-> subclass Constructor
The print order of the above example should be as follows:
Parent static block parent class Static
Child static block subclass static
Parent block parent class default {}
Parent constructor parent class constructor
Child block subclass default {}
Child constructor subclass constructor
Class Parent {
Static String name = "hello ";
Static {
System. out. println ("parent static block ");
}
{
System. out. println ("parent block ");
}
Public Parent (){
System. out. println ("parent constructor ");
}
}

Class Child extends Parent {
Static String childName = "hello ";
Static {
System. out. println ("child static block ");
}
{
System. out. println ("child block ");
}
Public Child (){
System. out. println ("child constructor ");
}
}

Public class StaticIniBlockOrderTest {

Public static void main (String [] args ){
New Child (); // Statement (*)

}
}

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.