Implementing the method “map()” Program plan: Filename: “Pair.java” This code snippet creates a class “Pair”. In the code, Define a class “Pair”. Declare the class members “first” and “second”. Define the constructor “Pair()”. Set the class members. Define the getter “getFirst()”. Return the value of “first”. Define the getter “getSecond()”. Return the value of “second”. Filename: “ListUtil.java” This code snippet creates an interface “ListUtil”. In the code, Import the required packages. Define a class “ListUtil”. Define the generic method “map()”. Create a list “result” of type “List<T>”. Iterate a “for” loop, Add elements to “result”. Return “result”. Filename: “MapTester.java” This code snippet creates a class “MapTester”. In the code, Define a class “MapTester”. Define the “main” method. Define a string array “words”. Create a list “wordsList”. Call the method “map()” and set the result to “sizes”. Create an iterator “iter”. Print the token of “wordsList” using “iter”. Print “first=second”. Print the expected token. Print the token of “wordsList” using “iter”. Print “first=second”. Print the expected token. Create an iterator “intItr”. Print the token of “wordsList” using “iter”. Print “first=second”. Print the expected token. Print the token of “wordsList” using “iter”. Print “first=second”. Print the expected token.

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Chapter 18, Problem 8PP

Program Plan Intro

Implementing the method “map()”

Program plan:

Filename: “Pair.java”

This code snippet creates a class “Pair”. In the code,

Define a class “Pair”.

Declare the class members “first” and “second”.

Define the constructor “Pair()”.

Set the class members.

Define the getter “getFirst()”.

Return the value of “first”.

Define the getter “getSecond()”.

Return the value of “second”.

Filename: “ListUtil.java”

This code snippet creates an interface “ListUtil”. In the code,

Import the required packages.

Define a class “ListUtil”.

Define the generic method “map()”.

Create a list “result” of type “List<T>”.

Iterate a “for” loop,

Add elements to “result”.

Return “result”.

Filename: “MapTester.java”

This code snippet creates a class “MapTester”. In the code,

Define a class “MapTester”.

Define the “main” method.

Define a string array “words”.

Create a list “wordsList”.

Call the method “map()” and set the result to “sizes”.

Create an iterator “iter”.

Print the token of “wordsList” using “iter”.

Print “first=second”.

Print the expected token.

Print the token of “wordsList” using “iter”.

Print “first=second”.

Print the expected token.

Create an iterator “intItr”.

Print the token of “wordsList” using “iter”.

Print “first=second”.

Print the expected token.

Print the token of “wordsList” using “iter”.

Print “first=second”.

Print the expected token.

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