Question

I have a basic question in Java:

I have two methods: functionA & functionB. functionA calls functionB, and functionB rise an exception. The call to functionB is in try scope of functionA.

Now I also want that functionA will go to it catch scope.

There is any way to do that?

Answer 1

If an exception is thrown in methodB and you catch it, one way to propagate it to methodA is to rethrow it:

void methodB() throws SomeException {
    try {
        //Something that can throw SomeException
    } catch (SomeException e) {
        //rethrow e
        throw e;
    }
}

void methodA() {
    try {
        methodB();
    } catch (SomeException e) {
        //this block will run if methodB throws SomeException
    }
}

But if you need that, you probably should not catch the exception in methodB at all and just let it propagate automatically to methodA:

void methodB() throws SomeException {
    //Something that can throw SomeException: don't catch it
}

void methodA() {
    try {
        methodB();
    } catch (SomeException e) {
        //this block will run if methodB throws SomeException
    }
}