Using of final keyword

[Rahul Noel]

1. class  TestObj {
2. public void display(){
3.System.out.println("In Display()");
4. }
5. public static void main(String[] args) {
6.  final TestObj test = new TestObj();
7.        TestObj test1 = new TestObj();
8.  test.display(); 
9.   }
10.}
  

My Question what is the difference between line no. 6 & 7.I mean both are working what is the purpose of the using final in line 6. please let me know.

[Ivan Vrtacnik]

Final is a keyword that is relevant to inheritance, not behaviour of the variable in the given class.

It means that the final variable cannot be inherited by children of this class.

[Ganeshkumar cheekati]

you can modify the status of the object which you created in line 6 eventhough you are using final keyword.

the main use of final is you cannot use that reference variable to point to another object.that means reference can not be changed.

[Vijitha Kumara]

Ivan Vrtacnik
----
Final is a keyword that is relevant to inheritance, not behaviour of the variable in the given class.

Inheritance has nothing to do with the given code. Reference variable "test" is local to main method. Here it means you cannot assign any object to "test" reference variable. But you can do this later in the code...

 test1 = new TestObj();   

but not with test reference because it's final and you cannot re-assign anything to it once you assign an object this case .

[Rahul Noel]

Hi Friends,
Thanks for your quick response and clarifying my doubt.