What is difference between "finalise" and "finally" methods ?

Question

Amit Mohanty · Answer

finally : Finally is a code block. It is used with try-catch block for handling exception. finally code block will be executed whether exception is handled or not. try { //code here } catch (SomeException se) { //handle exception here } finally { //always executed this code block } finalize: Finalize is a method of Object class. It is invoked before an object is discarded by the garbage collector, used to free unmanaged resources like database connections etc. The method finalize() is for unmanaged resources. protected void finalize() { //free resources here super.finalize(); }

Rajanikant Hawaldar · Answer

finalize() – method helps in garbage collection. A method that is invoked before an object is discarded by the garbage collector, allowing it to clean up its state. public class Demo{ public static void main(String[] args){ Demo d = new Demo(); d = null; System.gc(); System.out.println("Grabage collection"); } protected void finalize(){ System.out.println("Finalize()"); } } Output: Garbage collection Finalize() Finally – The finally block always executes when the try block exits, except System.exit(0) call. This ensures that the finally block is executed even if an unexpected exception occurs. public class Demo{ public static void main(String[] args){ try{ System.out.println("Try block"); int value = 5/0; System.out.println(value); } catch (ArithmeticException ex){ System.out.println("Exception"); System.out.println(ex); } finally{ System.out.println("Finally block"); } } } Output : Try block Exception Exception as / by zero Finally block.

What is difference between "finalise" and "finally" methods ?

Answers (2)