Java -What is an instance variable? [closed]

Answer 1

Instance variable is the variable declared inside a class, but outside a method: something like:

class IronMan{

     /** These are all instance variables **/
     public String realName;
     public String[] superPowers;
     public int age;

     /** Getters / setters here **/
}

Now this IronMan Class can be instantiated in other class to use these variables, something like:

class Avengers{
        public static void main(String[] a){
              IronMan ironman = new IronMan();
              ironman.realName = "Tony Stark";
              // or
              ironman.setAge(30);
         }

}

This is how we use the instance variables. Shameless plug: Example pulled from this free ebook here here.