Final : Final class cannot be inherited , Final method cannot be overridden and Final variable cannot be changed. Finally : It is a block in Java that is used in exception handling. The code in finally block will be executed even when exception is thrown or not. Finalize : Method that is used in the concept of Garbage Collection. --> Before JVM performs the Garbage Collection , if you want to perform important tasks like closing the connection object and so on , this type of code can be written in finalize method.