Design and code a new method to be exported from.... (please check my code)

Question

I'm working on my homework problem which is:
Design and code a new method to be exported from ArrayStringLog (the file is given to me) called isEmpty with the following signature public boolean isEmpty()
I created a new class and named it homework2, here is the method:
public class homework2
       public boolean isEmpty()
  // Returns true if this StringLog is empty, otherwise returns false.
    if (lastIndex == (- 1))
      return true;
    else
      return false;
}now how can i get it exported from ArrayStringLog? that's the part that I didn't understand
Edited by: memee4eva on Sep 30, 2009 11:53 PM

Answer 1

I think your isEmpty() method should go into the ArrayStringLog class. That way the method will be exposed by the altered ArrayStringLog class.
Am I right in thinking that an ArrayStringLog instance has a lastIndex member?
You might like to compare what you have with this:
    /** Returns true iff this StringLog is empty. */
public boolean isEmpty()
    return lastIndex == -1;
  }