Big Java Late Objects
Big Java Late Objects
2nd Edition
ISBN: 9781119330455
Author: Horstmann
Publisher: WILEY
Question
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Chapter 9, Problem 23PP
Program Plan Intro

A method that accepts an array of integers and “NumberFormatter” object

Program plan:

  • In a file “NumberFormatter.java”, create an interface “NumberFormatter”,
    • Declare the method “format()”.
  • In a file “DefaultFormatter.java”, create a class “DefaultFormatter” that implements “NumberFormatter” interface,
    • Define the method “format()”,
      • Return the formatted value.
  • In a file “FormatIntsTester.java”, create a class “FormatIntsTester”,
    • Define the method “format_Ints()” that takes an integer array and object of “NumberFormatter” as arguments,
      • Create a loop,
        • Print the formatted output.
          • Define the method “main()”,
            • Initialize the array.
            • Print the string heading.
            • Call the method “format_Ints()”.

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Chapter 9 Solutions

Big Java Late Objects

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