Difference between Long.valueOf(java.lang.String) and new Long(java.lang.String)?

Question

I\'m consolidating code written by two different people and notice that casting a String value into a Long has been done in two different ways.

Coder #1 has done t

Answer 1

This is the PMD plugin out put which is run on eclipse

Code I checked is

Long l = new Long("123456");

In JDK 1.5, calling new Long() causes memory allocation. Long.valueOf() is more memory friendly.