Chapter 9, Problem 14PP

Program Plan Intro

Implementation of “MySequence”, and “SequenceDemo” class

Program plan:

• In a file “Sequence .java”,
  • Create a package.
  • Create an interface “Sequence”,
    • Declare the method “next()”.
    • Declare the Boolean method “hasNext()”.
• In a file “MySequence.java”,
  • Create a package.
  • Create a class “MySequence”,
    • Declare the variable.
    • Initialize the array variable with populations in the cities.
    • Define the method “next()” to determine if the sequence has another value.
    • Define the method “next()”,
      • Initialize the variable.
      • Increment the sequence by “1”.
      • Return the value.
• In a file “LastDigitDistribution.java”,
  • Create a package.
  • Create a class “LastDigitDistribution”,
    • Declare the array for counter.
    • Define the constructor to set the counter array.
    • Define the method “process()”,
      • Execute loop if the sequence contains another value,
        • Assign the value returned from “next()”.
        • Compute last digit.
        • Increment the last value in the array.
        • • Define the method “display()”,
            • Create loop to execute for “10” times,
              • Print the value.
• In a file “SequenceDemo.java”,
  • Create a package.
  • Create a class “SequenceDemo”,
    • Define the method “main()”
      • Create object for “LastDigitDistribution”.
      • Call the method “process()”.
      • Call the method “display()”.