Question

I am dealing with JaudioTagger API to manipulate MP3 files, I have to repeat the following exceptions over and over again… I was thinking of having a generic exception handler where I could forward each exception maybe with a flag number and the generic method would be deal with it by having different switch cases maybe ? Is it possible ? I would really appreciate if someone could give the method signature or a way to call it

} catch (CannotReadException ex) {
                Logger.getLogger(MainPanel.class.getName()).log(Level.SEVERE, null, ex);
            } catch (ReadOnlyFileException ex) {
                Logger.getLogger(MainPanel.class.getName()).log(Level.SEVERE, null, ex);
            } catch (IOException ex) {
                Logger.getLogger(MainPanel.class.getName()).log(Level.SEVERE, null, ex);
            } catch (InvalidAudioFrameException ex) {
                Logger.getLogger(MainPanel.class.getName()).log(Level.SEVERE, null, ex);
            } catch (TagException ex) {
                Logger.getLogger(MainPanel.class.getName()).log(Level.SEVERE, null, ex);
            }

Answer 1

Pre-JDK 7 all you can do is write a utility function and call it from each of the catch blocks:

private void handle(Exception ex) {
    Logger.getLogger(MainPanel.class.getName()).log(Level.SEVERE, null, ex);
}

private void someOtherMethod() {
    try {
        // something that might throw
    } catch (CannotReadException ex) {
        handle(ex);
    } catch (ReadOnlyFileException ex) {
        handle(ex);
    } catch (IOException ex) {
        handle(ex);
    } catch (InvalidAudioFrameException ex) {
        handle(ex);
    } catch (TagException ex) {
        handle(ex);
    }
}

Starting in JDK 7, you can use multi-catch:

private void someOtherMethod() {
    try {
        // something that might throw
    } catch (CannotReadException | ReadOnlyFileException | IOException
             | InvalidAudioFrameException | TagException ex) {
        Logger.getLogger(MainPanel.class.getName()).log(Level.SEVERE, null, ex);
    }
}

See “Catching multiple exceptions“.