Difference Between Final And Const In Java
distinguishing final and const in Java
Difference Between Final And Const In Java
In Java, the ‘final’ keyword is used to define constant values, meaning once a ‘final’ variable is assigned a value, it cannot be changed. On the other hand, the ‘const’ keyword is not available in Java; instead, Java uses ‘final’ for this purpose. This means that in Java, ‘final’ is used to declare constant variables while in some other languages like C++, ‘const’ is used for the same purpose.
To Download Our Brochure: https://www.justacademy.co/download-brochure-for-free
Message us for more information: +91 9987184296
1 - Final keyword in Java:
The final keyword in Java is used to declare constants. Once a variable is declared as final, its value cannot be changed.
2) Const keyword in Java:
Unlike some other programming languages, Java does not have a ‘const’ keyword. Instead, final is used to achieve similar behavior.
3) Mutability:
Final variables in Java are immutable, meaning their values cannot be modified once assigned. This ensures data integrity and helps prevent accidental changes.
4) Initialization:
Final variables must be initialized when declared or within the constructor of the class. They cannot be left uninitialized.
5) Scope:
Final variables are scoped to the block in which they are declared. They can be used within that block and any nested blocks.
6) Class level:
Final variables can also be declared at the class level, making them constants accessible throughout the class.
7) Optimization:
Using final variables can sometimes lead to optimizations by the compiler, as it knows that the value will not change during the program's execution.
8) Thread safety:
Final variables offer some level of thread safety, as they guarantee that once initialized, their value will not change, reducing potential concurrency issues.
If you are offering a training program to students, it's essential to cover these points to help them understand the practical use and significance of final variables in Java programming.
Browse our course links : https://www.justacademy.co/all-courses
To Join our FREE DEMO Session: Click Here
Contact Us for more info:
- Message us on Whatsapp: +91 9987184296
- Email id: info@justacademy.co
Java Questions Asked In Selenium Interview
Mysql Joins Interview Questions
Salesforce Testing Interview Questions
