Java By Comparison

Always Catch Most Specific Exception

class TransmissionParser {
    static Transmission parse(String rawMessage) {
        if (rawMessage != null
                && rawMessage.length() != Transmission.MESSAGE_LENGTH) {
            throw new IllegalArgumentException("Bad message received!");
        }

        String rawId = rawMessage.substring(0, Transmission.ID_LENGTH);
        String rawContent = rawMessage.substring(Transmission.ID_LENGTH);
        try {
            int id = Integer.parseInt(rawId);
            String content = rawContent.trim();
            return new Transmission(id, content);
        } catch (Exception e) {
            throw new IllegalArgumentException("Bad message received!");
        }
    }
}

Exceptions in Java are part of a relatively complex type hierarchy. When you catch an exception, you ...