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More on Exceptions

More on Exceptions

This lesson explains the finally block and issues faced when multiple exceptions are thrown.

We'll cover the following...

Question # 1

Consider the snippet below:

    int process(int val) {

        try {
            if (val == 1)
                // checked exception
                throw new FileNotFoundException();
            if (val == 2)
                // Runtime Exception
                throw new NullPointerException();
            if (val == 3)
                // Error Exception
                throw new StackOverflowError();
        } catch (Error | FileNotFoundException | IllegalArgumentException | ArrayIndexOutOfBoundsException | NullPointerException ex) {
            return -1;

        } finally {
            System.out.println("In finally block");
        }

        return 0;
    }

What will be printed on the console and what will be the return value if the method is invoked like so:
new Example().process(2)

Q
A)

0 is returned and “In finally block” is printed

B)

-1 is returned and “In finally block” is printed

C)

-1 is returned and nothing is printed

Show Explanation

Though it may seem counterintuitive that the print statement in the finally block gets printed because the catch block has a return statement but a finally block always get executed after the try block. The runtime system always executes the statements within the finally ...