Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
What is the order of execution of non-static blocks with respect to a constructor in Java?
Whenever an object is created, a non-static block will be executed before the execution of the constructor.
Non-Static Blocks
- The Non-static blocks are class level blocks which do not have any prototype.
- The need for a non-static block is to execute any logic whenever an object is created irrespective of the constructor.
- The Non-static blocks are automatically called by the JVM for every object creation in the java stack area.
- We can create any number of Non-static blocks in Java.
- The order of execution of non-static blocks is an order as they are defined.
Example
public class NonStaticBlockTest {
{
System.out.println("First Non-Static Block"); // first non-static block
}
{
System.out.println("Second Non-Static Block"); // second non-static block
}
{
System.out.println("Third Non-Static Block"); // third non-static block
}
NonStaticBlockTest() {
System.out.println("Execution of a Constructor"); // Constructor
}
public static void main(String args[]) {
NonStaticBlockTest nsbt1 = new NonStaticBlockTest();
NonStaticBlockTest nsbt2 = new NonStaticBlockTest();
}
}Output
First Non-Static Block Second Non-Static Block Third Non-Static Block Execution of a Constructor First Non-Static Block Second Non-Static Block Third Non-Static Block Execution of a Constructor
Updated on: 29-Jun-2020
2K+ Views
Advertisements