1. HELPIDO.COM
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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
Standard header included 1
Must contain program's name, student name, and
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
are entered
2
Program validates number entered is a single digit
number
Program displays the largest
number
3
Program displays the largest number after all 10 numbers
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

2. 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;
3. check() method, which determines whether it is a palindrome; and
4. display() method, which displays the result.
Grading Rubric
Palindrome Points Description
Standard header included 1
Must contain program’s name, student name, and
description of the program
Program compiles 1 Program does not have any error
Program executes 1 Program runs without any error
Program contains main
method
1 Program contains main method
Program contains
retrieveInput() method
2
retrieveInput method exists, retrieves the user input, and
checks if input is numeric and has five digits
Program contains check()
method
2
check method exists and checks if number entered is a
palindrome
Program contains display()
method
2
display method exists and displays the result if palindrome
or not
Value entered is numeric
and has 5 digits
2
Program validates input to make sure it is numeric and
has five digits
Correct output is displayed 3
Program displays the correct message for the number
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
Standard header included 1
Must contain program’s name, student name, and
description of the program
Program compiles 1 Program does not have any error
Program executes 1 Program runs without any error
Program contains main
method
2
Program contains the main method where user is asked
to enter an odd number
Program contains
diamondOfAsterisks()
method
3
Program contains the diamondOfAsterisks method. This
method contains the code that builds and displays the
diamond based on the odd number entered.
Program asks for user input 2 User must enter an odd number
Program displays correct
diamond
5
The diamond must have the number of rows entered by
the user
Subtotal 15
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