Integer value comparison

Question

I\'m a newbie Java coder and I just read a variable of an integer class can be described three different ways in the API. I have the following code:

if (count.         


        

Answer 1

You can also use equals:

 Integer a = 0;

 if (a.equals(0)) {
     // a == 0
 }

which is equivalent to:

 if (a.intValue() == 0) {
     // a == 0
 }

and also:

 if (a == 0) {

 }

(the Java compiler automatically adds intValue())

Note that autoboxing/autounboxing can introduce a significant overhead (especially inside loops).