Java Finally Keyword

finally

If the exception is not caught by any catch block then finally block is responsible for handling the exception.

finally block statements are always executed after the try catch block has completed its execution.

Rules for writting finally block

• We can write finally block after the try block but catch must not be there after the finally block.
• We can write finally block after finishing all the catch blocks but in between the catch blocks.
• We can write only finally block after the try block without containing catch block
• We cannot write multiple finally blocks just like catch blocks, because only one final decision is taken on Exception.

Syntax

try
{
    // statements that generates an exception
    ....
    ....
}
catch (Exception-type1 object1)
{
    // Code for solving the Exception-type1 
    ....
    ....
}
.
.
finally
{
    // finally block code compulsory executed after try and catch
    ...
    ...
}

Note : finally do not contain any argument list like catch block.

Example

try
{
    int a=25, b=0;
    int c = a/b; // generates an exception as Divided by zero.
    System.out.println("Division is : "+c); // executed if there is no Exception.
}
catch(ArithmeticException AE)
{
    System.out.println("Divided by zero error. Please change inputs");
    // take action if error occurred. But never goes to try block.
}
finally
{
    System.out.println("Finally block executed");
}

Output