Most efficient way of converting String to Integer in java

Question

There are many ways of converting a String to an Integer object. Which is the most efficient among the below:

Integer.valueOf()
Integer.parseInt()
org.apache         


        

Answer 1

If efficiency is your concern, use int: it is much faster than Integer.

Otherwise, class Integer offers you at least a couple clear, clean ways:

Integer myInteger = new Integer(someString);
Integer anotherInteger = Integer.valueOf(someOtherString);