Comp 401 ‐ Assignment 2:
Object Scanning Numbers and Words
Date Assigned: Thu Jan 22, 2009
Completion Date: Thu Jan 29, 2009
Early Submission Date: Tue Jan 27, 2009
In this assignment, you will get more practice scanning. In addition, you will learn instance
variables, properties and class instantiation. This work will build on your previous assignment.
Task
Write a class that defines two properties: (1) Input of type String, and (2) TokenArray, of type
String[]. You can assume a maximum size , MAX_TOKENS, for TokenArrray. Input is an editable
property and TokenArray is a readonly computed property. Input is expected to contain digit
sequences (numbers) and letter sequences (words). You can assume that there:
1. is exactly one space character after each number/word (including the last one).
2. is at least one number/word in Input.
3. are never more than MAX_TOKEN numbers/words in Input.
4. are no errors.
Your task is to scan Input for the words and numbers and store them in
TokenArray. More specifically, if you find N words and numbers in the string, then you
should store them in the first N slots of the array. 1. You should not convert a digit
sequence into a number for this assignment – you should store it directly as a string.
You should write two main programs to test this class. One takes a string
argument, prints it, and then uses an instance of this class to set Input and then print all
the elements of TokenArray. The other takes no string argument, and user ObjectEditor
to interact with an instance of the class. The following screen shots from ObjectEditor
illustrate the interaction with the object.
