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- 04-19-2011, 04:31 PM #1Member
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What is the difference between Integer class and int primitive data type?
I know what they are and how to construct each one of them. I don't understand what is the purpose of the Integer class. also, why do you use intValue ( ) to get the integer from an Integer object.
I would appreciate if someone can distinguish between them :D
- 04-19-2011, 04:32 PM #2
There are certain places where you have to use an Object, not a primitive. One example is adding an int to an ArrayList- you can't do that, so you wrap it in an Integer and add that instead.
There are other things at play, but that's the gist.
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