• • The keyword final is a modifier that can be used with variable, method, and class.
• • When a variable is declared as final, then the value of that variable never changed for whole class. If we are trying to change, then it will give a compile time error.

Example;

class A
{
	final int x=100;
	void get()
	{
		x=200;         //compile time  error
	}

• • When a method is declared as final, then that method never overridden. If we will try, then it will give compile time error.
• • When a class is declared as final, then that class never inherited.

Final variable : value never changed
Final method : method never overridden
Final class : class never inherited

Can final method inherited?
Yes, it is possible we can inherit final method but cannot override it.