Try catch performance Java

How long (in nanoseconds) does it take to try catch exceptions instead of checking (assuming that the message has HashMap type lookup performance)?

try {
        timestamp = message.getLongField( MessageField.TIMESTAMP );
    } catch (MissingDataException e) {
        //Not all messages contain this field
    }

VS

if (message.contains(MessageField.TIMESTAMP))
    timestamp = message.getLongField( MessageField.TIMESTAMP );

Solution

In short, inspection is faster You should use a check because:

>Exceptions are expensive! You must create a stack trace (if used, such as records, etc.) and handle special flow control > exceptions should not be used for flow control - exceptions are "special cases" > exceptions are the words of code "I can't handle this situation, I gave up... You handle it!", But here you can deal with it... So deal with it