Name: ____________________________________________________ Alpha: _____________________

Describe help received: _________________________________________________________________

1. [20Pts] What's wrong with the function disp() defined below?

   public class Foo
   {
     double x;
     String s;
     public static String disp()
     {
       return "[" + s + "," + x + "]";
     }
   }

2. [60Pts] Given the following (partial) defintion of class Time

   public class Time
   {
     int hh, mm, ss;
     public boolean equal(Time t) { ... }
     public static boolean equal(Time t1, Time t2) { ... }
   }

   Assume code in some other class Foo class defines A and B as: Time A = new Time(), B = new Time();
   1. How would you call the first definition of equal to compare A and B (still from within Foo)?
   2. How would you call the second definition of equal to compare A and B (still from within Foo)?
   3. Give the definition for the first "equal":

      public boolean equal(Time t) 
      {
      
      
      
      }

   4. Give the definition for the second "equal":

      public static boolean equal(Time t1, Time t2) 
      {
      
      
      
      }

3. [20Pts] Suppose I wanted to add a function to the Time class (above) to determine whether Time A comes before Time B. Give the complete method definition I would have to add to the Time class in order to be able to call the function like this:

   A.isBefore(B)