Don’t worry, enterprise Java programming patters will fix that “performance” thing right up. Call a function? Goodness no, not without an helper class being instantiated first. Oh you wanted to instantiate a helper class? Better call a factory to do that. Not directly - have you heard of Dependency Injection? We configure that via XML here.

See? Fast performance isn’t a problem any more. You can make it go away in the time it takes you to load Jira.