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

Deepak Tewatia

4y826.NET

2 Replies

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Amit Mohanty4y ago
Accepted 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 Hawaldar4y ago
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.