1. CIS/355 iLab 2 of 6
STEP 1: Largest (10 points)
Write a Java application program called Largest.java that inputs a series of 10 single-digit numbers
and determines and prints the largest of the numbers. Except main() method, no other user-defined
method is required. Your program should use at least the following three variables
1. counter: A counter to count to 10 (that is, to keep track of how many numbers have been
input and to determine when all 10 numbers have been processed);
2. number: The current digit input to the program; and
3. largest: The largest number found so far.
When each number is entered, make sure it is a single digit number, that is 0 to 9.
Grading Rubric
Largest Points Description
Must contain program's name, student name, and
Standard header included 1
description of the program
Program compiles 2 Program does not have any error
Program executes 2 Program runs without any error
Only single digit numbers Program validates number entered is a single digit
2
are entered number
Program displays the largest Program displays the largest number after all 10 numbers
3
number are entered
Subtotal 10
STEP 2: Palindrome (15 points)
A palindrome is a sequence of characters that reads the same backward as forward. For example,
each of the following five-digit integers is a palindrome: 12321, 55555, 45554, and 11611. Write an
application called Palindrome.java that asks the user to enter in a five-digit integer and
determines whether it is a palindrome. If the number is not five digits long, display an error
message dialog indicating the problem to the user. When the user dismisses the error dialog, allow
the user to enter a new value.
Your program will have the following four methods
1. main() method, which controls the execution of the program;
2. retrieveInput() method, which prompts and retrieves the input values;

2. 3. check() method, which determines whether it is a palindrome; and
4. display() method, which displays the result.
Grading Rubric
Palindrome 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
Program contains main
1 Program contains main method
method
Program contains retrieveInput method exists, retrieves the user input, and
2
retrieveInput() method checks if input is numeric and has five digits
Program contains check() check method exists and checks if number entered is a
2
method palindrome
Program contains display() display method exists and displays the result if palindrome
2
method or not
Value entered is numeric Program validates input to make sure it is numeric and
2
and has 5 digits has five digits
Program displays the correct message for the number
Correct output is displayed 3
entered
Subtotal 15
STEP 3: Diamond (15 points)
Write a program called Diamond.java that uses a method diamondOfAsterisks() that displays a
diamond (the row number of a diamond must be odd) of asterisks whose row is specified in an
integer parameter row. For example, if the user enters a 7, then the diamond will have seven rows
and the method will display the pattern of asterisks. Below is an example of the diamond displayed
when 7 is entered.
*
***
*****
*******
*****
***
*

3. Grading Rubric
Diamond 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
Program contains main Program contains the main method where user is asked
2
method to enter an odd number
Program contains Program contains the diamondOfAsterisks method. This
diamondOfAsterisks() 3 method contains the code that builds and displays the
method diamond based on the odd number entered.
Program asks for user input 2 User must enter an odd number
Program displays correct The diamond must have the number of rows entered by
5
diamond the user
Subtotal 15
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