What is .intValue() in Java?

Question

What is the difference between them?

l is an arraylist of Integer type.

version 1:

int[] a = new int[l.size()];
for (in         


        

Answer 1

The Object returned by l.get(i) is an instance of the Integer class.

intValue() is a instance method of the Integer class that returns a primitive int.

See Java reference doc... http://docs.oracle.com/javase/6/docs/api/java/lang/Integer.html#intValue()