Generic class to find out largest, smallest, total and average of elements in an ArrayList Program plan: Import the required package. Create the class “MyList” with a type parameter “T” that is constrained to an upper bound Number using the keyword extends, Create “ArrayList” as a field of class “MyList” with type parameter “T”. Define the constructor. Define the public method “add()” to accept the parameter of type “T”, Store the value in “ArrayList” using the reference variable “list”. Define the method “largest()”, Call the method “get()” to store the initial value of “ArrayList” in the variable. Iterate the elements of “ArrayList” using “for” loop and compare each value using if statement to find the largest value in the “ArrayList”. Return the largest value using the keyword “return”. Define the method “smallest()”, Call the method “get()” to store the initial value of “ArrayList” in the variable. Iterate the elements of “ArrayList” using “for” loop and compare each value using if statement to find the smallest value in the “ArrayList”. Return the smallest value using the keyword “return”. Define the method “Total()”, Call the method “get()” to store the initial value of “ArrayList” in the variable. Iterate the elements of “ArrayList” using “for” loop and calculate the total value of elements in the “ArrayList”. Return the total value using the keyword “return”. Define the method “Avg()”, Call the method “get()” to store the initial value of “ArrayList” in the variable. Iterate the elements of “ArrayList” using “for” loop and calculate the total value of elements in the “ArrayList”. Calculate and return the average value using the keyword “return”. Create the class “Main”, Define the method “main()”, Create the object of a class “MyList” as a type of “Integer”. Call the “add()” method to fill the values in the “ArrayList”. Call the method “largest()” to print the largest value of “ArrayList”. Call the method “smallest()” to print the smallest value of “ArrayList”. Call the method “Total()” to print the total value of elements in the “ArrayList”. Call the method “Avg()” to print the average value of elements in the “ArrayList”.

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Chapter 18, Problem 7PC

Program Plan Intro

Generic class to find out largest, smallest, total and average of elements in an ArrayList

Program plan:

Import the required package.

Create the class “MyList” with a type parameter “T” that is constrained to an upper bound Number using the keyword extends,

Create “ArrayList” as a field of class “MyList” with type parameter “T”.

Define the constructor.

Define the public method “add()” to accept the parameter of type “T”,

Store the value in “ArrayList” using the reference variable “list”.

Define the method “largest()”,

Call the method “get()” to store the initial value of “ArrayList” in the variable.

Iterate the elements of “ArrayList” using “for” loop and compare each value using if statement to find the largest value in the “ArrayList”.

Return the largest value using the keyword “return”.

Define the method “smallest()”,

Call the method “get()” to store the initial value of “ArrayList” in the variable.

Iterate the elements of “ArrayList” using “for” loop and compare each value using if statement to find the smallest value in the “ArrayList”.

Return the smallest value using the keyword “return”.

Define the method “Total()”,

Call the method “get()” to store the initial value of “ArrayList” in the variable.

Iterate the elements of “ArrayList” using “for” loop and calculate the total value of elements in the “ArrayList”.

Return the total value using the keyword “return”.

Define the method “Avg()”,

Call the method “get()” to store the initial value of “ArrayList” in the variable.

Iterate the elements of “ArrayList” using “for” loop and calculate the total value of elements in the “ArrayList”.

Calculate and return the average value using the keyword “return”.

Create the class “Main”,

Define the method “main()”,

Create the object of a class “MyList” as a type of “Integer”.

Call the “add()” method to fill the values in the “ArrayList”.

Call the method “largest()” to print the largest value of “ArrayList”.

Call the method “smallest()” to print the smallest value of “ArrayList”.

Call the method “Total()” to print the total value of elements in the “ArrayList”.

Call the method “Avg()” to print the average value of elements in the “ArrayList”.

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