EBK BIG JAVA: EARLY OBJECTS, INTERACTIV
EBK BIG JAVA: EARLY OBJECTS, INTERACTIV
6th Edition
ISBN: 8220102010314
Author: Horstmann
Publisher: YUZU
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Chapter 13, Problem 2PP
Program Plan Intro

Enumerating PIN codes

Program plan:

Filename: “PinWordEnumerator.java”

This program file is used to define a class “PinWordEnumerator”. In the code,

  • Import the required packages.
  • Define a class “PinWordEnumerator”.
    • Create a linked list “dictionary” to hold the words in “words.txt”.
    • Define a method “main()”.
      • Define an object “scan” of class “Scanner”.
      • Prompt the user to enter the pin number.
      • Scan for the pin value.
      • Print new line.
      • Print the statement.
      • Call the method “enumerateWords()”.
    • Define a wrapper method “enumerateWords()”.
      • Call the method “enumerateWords()”.
    • Define a wrapper method “enumerateWords()”.
      • If the length of the pin is “0”,
        • Print the “word”.
          • If the length of the pin is not “0”,
            • Create a string array “map”.
            • Create a character variable “currentDigit” and set the value.
            • Create a string variable “letters” and get the value from “map”.
            • Define a looping variable “i”.
            • Iterate a “for” loop,
              • Create a string variable “wordCopy”.
              • Call the method “enumerateWords()”.
    • Define a wrapper method “uploadDictionary()”.
      • Create a linked list “list”.
      • Define the “try” block.
        • Scan the file.
        • Iterate a “while” loop to get the tokens of the file.
          • Add the word to the linked list.
            • Return the linked list.
      • Define the “catch” block.
        • Call “getLogger()”.
      • Return “null”.

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