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integer question

What is the purpose of Integer.parseInt ? why don't we just type int age = 30; instead of int age = Integer.parseInt("30"); they have the same result right?

Jason Anders
Jason Anders
Treehouse Moderator 145,858 Points

Hi Khoa,

Could you add a little more context to your question. There could be multiple uses for Integer.parseInt(), but it wouldn't be used in the example you provided. If you are setting an integer, it would just be int age = 30;... that's it.

If you could provide so more examples or a reference to where in the courses you noticed this, we could shed some better light on the subject. :)


1 Answer

You would only need to use Integer.parseInt(); if the argument being passed in was of a different type. Here is an example:

String number = console.readLine("Please type a number: ");
int total = Integer.parseInt(number);

Doing it this way would convert the String that was passed in by the user into an int.