Can using non primitive Integer/ Long datatypes too frequently in the application, hurt the performance?

Question

I am using Long/Integer data types very frequently in my application, to build Generic datatypes. I fear that using these wrapper objects instead o

Answer 1

Like others say,

Premature optimization is root of evil.

Having said that, prefer primitive types to boxed types wherever you can.

UPDATE: Might also add that according to developers that work with high-performing code (like distributed cache) boxing can indeed become a performance problem quite frequently. I also worked with high-performing apps. but have never identified boxing as a worthy optimization place yet.