Can't rethrow exception in a function

Answered

Permanently deleted user

Created December 15, 2018 01:22

I want to rethrow an exception in a function like:

int foo()
try {
// do sth
return 0;
} catch (Exception e) {
bar(e);
}
}

void bar(Exception e) {
// prepare for rethrow
throw e;
}

IntelliJ complains that foo is missing return statement. The reason I want to rethrow in bar is reducing code repetition as many other places also need to call bar(). Is it a bug of IntelliJ?

1 comment

Olga Klisho

Created December 17, 2018 13:44

Hello,

The code sample provided is uncompilable with Javac. In Java exceptions under Error and RuntimeException classes are unchecked exceptions, everything else under Throwable is checked. Exception extends Throwable, so the method must either handle the exception or it must specify the exception using throws keyword. That's the first error, second is missing return statement. IDEA's highlighting works correct in your case.

The compilable variant of code will look somehow like this:

int foo()
        throws Exception {
    try {
        // do sth
        return 0;
    } catch (Exception e) {
        bar(e);
    }
    return 1;
}

void bar(Exception e)
        throws Exception {
    throw e;
}

But seems that it's not reasonable to create here an extra method.

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