Programming Forums - Object to Int

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- - Object to Int (http://www.programmingforums.org/showthread.php?t=14635)

kruptof

Nov 28th, 2007 12:55 PM

Object to Int

I am doing one of my Java assignments and I need to pass a method an int but I am receiving the data as an Object, is it possible to convert an Object to an int.

I will just demonstrate what I mean because I can't post my actual code.

public void A(Object o)

{

      //call B with the given data

      //do something

}

public void B(int i)

{

      //do something

}

titaniumdecoy

Nov 28th, 2007 1:56 PM

Re: Object to Int

You need to know what the object is an instance of. Assuming it is an Integer, you can call the intValue() method to convert it to an int.

Infinite Recursion

Nov 28th, 2007 2:14 PM

Re: Object to Int

test

null_ptr0

Nov 28th, 2007 4:26 PM

Re: Object to Int

Object is, haha, an object type, while int is a primitive type. You cannot translate objects to ints through direct casts; but if the object is of Integer, you could access and call the member method intValue() which returns the actual integer value being wrapped.
Example:

public void A(Object o) {

   if(o instanceof Integer)

        B(((Integer) o).intValue());

   else

        throw new IllegalArgumentException();

}



public void B(int i) {

    /*

        code is here

    */

}

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