CP2003 - Tutorial Six: Stuff

Assignment Submittal. Your assignment is due at the start of this tutorial. Your tutor will come around and test your work.
Java passes function arguments by value. Simulate C++'s pass by reference in Java. More precisely, simulate the following
```
  void MyFunction(int &x) { x++; }
```
Hint: Use an Integer object that wraps around a Java int. Use the object reference of that Integer as the argument to your Java function.
Test your Java function
Consider the "notorious" Zoo.java (or Pets.java) example. Suppose the random number generator generated the numbers 0, 1, 4, 4, 2, 3, 0, 1. What would the output of the program be for that case?
Consider the interface FIFOQueue and the implementation CircularArray from the lecture notes. Give a third implementation LargeCircularArray which is exactly as CircularArray except that it can hold up to 1000 elements. Alter the test-driver program appropriately, re-compile and re-run the test-driver program.
Further to last week's experimentation with ExGui2.java, after change the title of the frame, try adding an additional checkbox called "Black Olives" appearing between "Green Olives" and "Small Cheese Platter". This checkbox also needs to be reported in the text-field if checked.
Finally, compile and "play" with ExGui3.java.