1. CIS/355 iLab 5 of 6
STEP 1: GuessGame
Write a program named GuessGame.java that plays the game “guess the number” as follows:
Your program chooses the number to be guessed by selecting an integer at random in the range 1–
1000. The program then displays the following in a label.
I have a number between 1 and 1000 -- can you guess my number?
Please enter your guess: ____________________
A JTextField should be used to input the guess. A JButton must be provided to allow the user to
press each time a guess is entered. As each guess is input, the background color should change to
either red or blue. Red indicates that the user is getting warmer, and blue indicates that the user is
getting colder. A JLabel should display either Too High or Too Low to help the user zero in on the
correct answer. When the user gets the correct answer, Correct! should be displayed, and the
JTextField used for input should be cleared and changed to be uneditable. Also, a JButton should be
provided to allow the user to play the game again. When the New Game JButton is clicked, a new
random number should be generated and the input JTextField changed to be editable. A JButton
must be provided to allow the user to exit the application. Also provide a count of the number of
guesses the user entered when the correct number is guessed.
Grading Rubric
GuessGame Points Description
Must contain program's name, student name, and
Standard header included 1
description of the program
Program compiles 1 Program does not have any error
Program executes 1 Program runs without any error
GUI contains the label with the initial question, the label
GUI contains the required
2 for the input field, and the label for the Too high or Too
labels
low message
GUI contains input text field
2 GUI contains the input field for entering the guess
for the guess
GUI contains the Guess, New GUI contains the Guess button, New Game button, and
3
Game, and Exit buttons Exit button
Each button handles the
Each button handles and processes its corresponding
corresponding events 6
behavior
properly
Program displays the correct 4 Program displays the correct messages, changes the

2. output colors appropriately, and displays the count of guesses
Subtotal 20
STEP 2: Text File I/O (20 points)
Write a program called TextFileIO.java to create a file named numbers.dat. Then create an
algorithm that writes all even numbered integers from 1 to 100, separated by a comma. After the
file has been created, close and reopen the file and display the results to the screen. After the
results have been displayed append the odd number integers from 1 to 100, separated by a comma
to the end of the file. Reopen the file and display the results. The contents of the file should be the
even numbers from 1 to 100 separated by a comma followed by the odd number from 1 to 100
separated by a comma. The output of this program would be something like the following
2,4,6,8,10,12,14,……,98,100
2,4,6,8,10,12,14,……,98,100,1,3,5,7,9,……..97,99
Grading Rubric
Text File I/O Points Description
Must contain program’s name, student name,
Standard header included 1
and description of the program
Program compiles 2 Program does not have any error
Program executes 2 Program runs without any error
Program creates "numbers.dat" file 2 The file numbers.dat exists and is readable
Program writes all even number
All even numbers from 1 to 100 are written
integers from 1 to 100, separated by 2
to the file. A comma separates each number.
commas
The file is closed after even numbers are
File is closed 1
processed
The file is re-opened for reading the even
File is re-opened for reading 1
numbers and commas
Program displays even numbers from 1 to
Program displays even integers 1
100 separated by commas
Odd numbers from 1 to 100 separated Odd numbers from 1 to 100 are appended to
2
by commas are appended the file. A comma separates each number.
The file is closed after odd numbers are
File is closed 1
processed
The file is re-opened for reading the even
File is re-opened for reading 1
and odd numbers separated by commas

3. The contents of the file are displayed
File contents are displayed 1 correctly, showing each number separated by
a comma
Program displays the correct output as
Correct output is displayed 5
described above
Subtotal 20
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