Asking about Vector

Question

Hi ,
I will like to ask about the Vector class. I tried to use the ElementAt method and when i declared the code as below :
     int arrayelement = insertarray.elementAt(tempsize);it will give me an error saying object needed.
then if i put as String as below :
String arrayelement = (String)insertarray.elementAt(tempsize); it can worked. Does this mean that for ElementAt ,we have to case it to String and not integer?? Hopw someone can enlighten me :P
Thanks

Answer 1

"int" is not an object, it is a primitive type. Vector can store only objects and so elementAt can return only objects; you get the error because it's impossible to get int from a general object.
If you want to store integers in the vector you can use objects of the class Integer, that class wraps the primitive type int:    insertArray.add(new Integer(42));
    Integer object = (Integer) insertArray.elementAt(0);
    int value = object.intValue();