Difference between final, finally and finlize() method

Final and finally is keywords where as finalize() is a method

Finalize():

Finalize() is a method, used to call garbage collector to reclaim the memory.

Finally:

Irrespective of the exception raised, finally block will be executed.

Final:

In java, final is a keyword used to define constants.

Final keyword can be applied in 3 levels mainly.

1      Class level

2               Method level

3           Variable level

Class level:

Final class:

The class declared as final can't be subclass or extend the class

The final class declared as follows :

public final class MyFinalClass

Method level:

     final method:

          when we declare a method as final, Then final method can't be override in a subclass.

         

          The final method  can be declare as follows:

           public final String convertCurrency()

     Variable level

     Final variables:

      When we declare a variable as final, it behaves like a constant.

      Means once it is declared, it can't be changed.

      Attempt to change  it's value lead to exception or compile time error.

    

      You can declare the final fields as :

      public final double radius = 126.45;