Implementation of “FirstDigitDistribution” class Program plan: In a file “Sequence .java”, Create a package. Create an interface “Sequence”, Declare the method “next()”. In a file “RandomSequence .java”, Create a package. Import necessary package. Create a class “RandomSequence”, Define the method “next()”, Create “Random” object. Return the random number. In a file “SquareSequence .java”, Create a package. Create a class “SquareSequence”, Declare the variable. Define the method “next()”, Increment the variable. Return the multiplied value. In a file “FirstDigitDistribution .java”, Create a package. Create a class “FirstDigitDistribution”, Declare the array for counter. Define the constructor, Set the counter array. Define the method “process()”, Create loop till the value to be processed, Assign the value returned from “next()”. Check whether the value is negative, Subtract the value from the same value. Execute till the value greater than or equal to “10”, Compute one’s place value. Compute the first digit. Increment the last value in the array. Define the method “display()”, Create loop for “10” times, Print the position with value. In a file “SequenceDemo.java”, Create a package. Create a class “SequenceDemo”, Define the method “main()” Create object for “FirstDigitDistribution”. Call the method “process()”. Call the method “display()” Print new line. Create another object for “FirstDigitDistribution”. Call the method “process()”. Call the method “display()”.

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Chapter 9, Problem 15PP

Program Plan Intro

Implementation of “FirstDigitDistribution” class

Program plan:

In a file “Sequence .java”,

Create a package.

Create an interface “Sequence”,

Declare the method “next()”.

In a file “RandomSequence .java”,

Create a package.

Import necessary package.

Create a class “RandomSequence”,

Define the method “next()”,

Create “Random” object.

Return the random number.

In a file “SquareSequence .java”,

Create a package.

Create a class “SquareSequence”,

Declare the variable.

Define the method “next()”,

Increment the variable.

Return the multiplied value.

In a file “FirstDigitDistribution .java”,

Create a package.

Create a class “FirstDigitDistribution”,

Declare the array for counter.

Define the constructor,

Set the counter array.

Define the method “process()”,

Create loop till the value to be processed,

Assign the value returned from “next()”.

Check whether the value is negative,

Subtract the value from the same value.

Execute till the value greater than or equal to “10”,

Compute one’s place value.

Compute the first digit.

Increment the last value in the array.

Define the method “display()”,

Create loop for “10” times,

Print the position with value.

In a file “SequenceDemo.java”,

Create a package.

Create a class “SequenceDemo”,

Define the method “main()”

Create object for “FirstDigitDistribution”.

Call the method “process()”.

Call the method “display()”

Print new line.

Create another object for “FirstDigitDistribution”.

Call the method “process()”.

Call the method “display()”.

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