示例#1
0
        public static void Main()
        {
            Tapper      tap = new Tapper();
            SingleSpoon spoonForFirstPerson = SingleSpoon.getTheSpoon();

            tap.test("Create first spoon ", spoonForFirstPerson, spoonForFirstPerson);

            SingleSpoon spoonForSecondPerson = SingleSpoon.getTheSpoon();

            tap.test("Second person getting a spoon, shouldn't be able to", spoonForSecondPerson == null);

            SingleSpoon.returnTheSpoon();
            tap.test("The spoon was returned", spoonForFirstPerson != null);

            spoonForSecondPerson = SingleSpoon.getTheSpoon();
            tap.test("Second person getting a spoon", spoonForSecondPerson != null);
            tap.done();
        }
示例#2
0
 public static SingleSpoon getTheSpoon()
 {
     if (theSpoonIsAvailable)
     {
         if (theSpoon == null)
         {
             theSpoon = new SingleSpoon();
         }
         theSpoonIsAvailable = false;
         return(theSpoon);
     }
     else
     {
         return(null);
         //spoon not available,
         //  could throw error or return null (as shown)
     }
 }