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Finished Program Challenge Ch 3 Ex 3, 4, 7, 15, 16
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‎Starting out with Java (Tony Gaddis) 7th Ed/Programming Challenges/3. Chapter 3 - Decision Structures/15. Bank Charges/BankCharges.java

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/*
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* This program was written by Kyle Martin on 5/27/2021 for CPT421 Java Programming Principles 1 during Summer Session 1
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* at Southwestern College, Kansas.
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*
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* IMPORTANT: Normally I would not place a bunch of comments in my code describing what my code is doing as I like to
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* have code that is written in a manner to be understandable while reading it. Though, do to the grading rubric I will
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* explain my code.
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*
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* This program calculates the total service fee based on the amount of checks written in a month.
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*/
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import java.text.DecimalFormat;
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import java.text.NumberFormat;
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import java.util.Scanner;
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public class BankCharges {
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public static void main(String[] args) {
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// Scanner
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Scanner userInput = new Scanner(System.in);
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NumberFormat moneyFormat = new DecimalFormat("#,###.##");
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// Declarations
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final double MONTHLY_BASE_CHARGE = 10.00;
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final double LESS_THAN_TWENTY_CHECKS = 0.10;
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final double TWENTY_TO_THIRTY_NINE_CHECKS = 0.08;
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final double FORTY_TO_FIFTY_NINE_CHECKS = 0.06;
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final double SIXTY_PLUS_CHECKS = 0.04;
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double totalMonthlyServiceFee = 0;
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// Questionnaire
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System.out.println("Welcome the the Bank Service Fee inquiry system.");
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System.out.println( "The Bank charges a flat rate fee of $" + moneyFormat.format(MONTHLY_BASE_CHARGE) +
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" per month.");
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System.out.println( "The Bank also charges a fee of: \n" +
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"$" + LESS_THAN_TWENTY_CHECKS + " each check for less than 20 checks a month written \n" +
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"$" + TWENTY_TO_THIRTY_NINE_CHECKS + " each check for 20-39 checks a month written \n" +
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"$" + FORTY_TO_FIFTY_NINE_CHECKS + " each check for 40-59 checks a month written \n" +
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"$" + SIXTY_PLUS_CHECKS + " each check for 60+ checks a month written");
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System.out.println("How many checks did you write this month? Ex. 10 for 10 checks");
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int checksWritten = userInput.nextInt();
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// Calculations
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if (checksWritten >= 60) {
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totalMonthlyServiceFee = MONTHLY_BASE_CHARGE + (SIXTY_PLUS_CHECKS * checksWritten);
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} else if (checksWritten <= 59 && checksWritten >= 40) {
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totalMonthlyServiceFee = MONTHLY_BASE_CHARGE + (FORTY_TO_FIFTY_NINE_CHECKS * checksWritten);
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} else if (checksWritten <= 39 && checksWritten >= 20) {
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totalMonthlyServiceFee = MONTHLY_BASE_CHARGE + (TWENTY_TO_THIRTY_NINE_CHECKS * checksWritten);
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} else if (checksWritten < 20 && checksWritten >= 1) {
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totalMonthlyServiceFee = MONTHLY_BASE_CHARGE + (LESS_THAN_TWENTY_CHECKS * checksWritten);
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} else {
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System.out.println("Please enter a correct solid number of checks.");
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}
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System.out.println( "You wrote " + checksWritten + " this month. Your charge comes to $" +
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moneyFormat.format(totalMonthlyServiceFee));
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}
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}

‎Starting out with Java (Tony Gaddis) 7th Ed/Programming Challenges/3. Chapter 3 - Decision Structures/16. Book Club Points/BookClub.java

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/*
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* This program was written by Kyle Martin on 5/27/2021 for CPT421 Java Programming Principles 1 during Summer Session 1
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* at Southwestern College, Kansas.
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*
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* IMPORTANT: Normally I would not place a bunch of comments in my code describing what my code is doing as I like to
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* have code that is written in a manner to be understandable while reading it. Though, do to the grading rubric I will
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* explain my code.
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*
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* This program calculates the total amount of points a book club member earns this month.
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*/
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import java.util.Scanner;
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public class BookClub {
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public static void main(String[] args) {
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// Scanner
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Scanner userInput = new Scanner(System.in);
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// Declarations
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final int ONE_BOOK = 5, TWO_BOOKS = 15, THREE_BOOKS = 30, FOUR_PLUS_BOOKS = 60;
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int totalBookClubPoints = 0;
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// Questionnaire
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System.out.println( "Welcome to Serendipity Booksellers Book Club! \n" +
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"Lets calculate your points this month!");
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System.out.println("How many books did you purchase this month? Example: 2 for 2 books.");
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int booksPurchased = userInput.nextInt();
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// Calculation
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if (booksPurchased >= 4) {
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totalBookClubPoints = FOUR_PLUS_BOOKS;
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} else if (booksPurchased == 3) {
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totalBookClubPoints = THREE_BOOKS;
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} else if (booksPurchased == 2) {
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totalBookClubPoints = TWO_BOOKS;
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} else if (booksPurchased == 1) {
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totalBookClubPoints = ONE_BOOK;
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}
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// Output
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System.out.println("You have earned " + totalBookClubPoints + " points this month!");
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}
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}

‎Starting out with Java (Tony Gaddis) 7th Ed/Programming Challenges/3. Chapter 3 - Decision Structures/3. Body Mass Index/BodyMassIndexCalculator.java

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/*
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* This program was written by Kyle Martin on 5/27/2021 for CPT421 Java Programming Principles 1 during Summer Session 1
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* at Southwestern College, Kansas.
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*
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* IMPORTANT: Normally I would not place a bunch of comments in my code describing what my code is doing as I like to
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* have code that is written in a manner to be understandable while reading it. Though, do to the grading rubric I will
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* explain my code.
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*
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* This program calculates the BMI of the user.
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*/
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import java.text.DecimalFormat;
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import java.text.NumberFormat;
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import java.util.Scanner;
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public class BodyMassIndexCalculator {
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public static void main(String[] args) {
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// Scanner and number format
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Scanner userInput = new Scanner(System.in);
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NumberFormat bmiFormat = new DecimalFormat("##.##");
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// Questionnaire:
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System.out.println("Welcome to the Body Mass Index calculator!");
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System.out.println("Please type in your weight in pounds. Ex. 185 for 185 lbs.");
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double weight = userInput.nextDouble();
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System.out.println("Please type in your height in inches. Ex 67 for 67 inches.");
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double height = userInput.nextInt();
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// Calculations:
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double bmi = (weight * 703) / (height * height);
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// Output:
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System.out.println("Your BMI is: " + bmiFormat.format(bmi) + ".");
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if (bmi < 18.5){
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System.out.println("You are underweight");
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} else if (bmi < 25){
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System.out.println("You are normal weight");
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} else {
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System.out.println("You are overweight.");
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}
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}
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}

‎Starting out with Java (Tony Gaddis) 7th Ed/Programming Challenges/3. Chapter 3 - Decision Structures/4. Test Scores and Grade/TestScoresGrade.java

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/*
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* This program was written by Kyle Martin on 5/27/2021 for CPT421 Java Programming Principles 1 during Summer Session 1
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* at Southwestern College, Kansas.
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*
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* IMPORTANT: Normally I would not place a bunch of comments in my code describing what my code is doing as I like to
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* have code that is written in a manner to be understandable while reading it. Though, do to the grading rubric I will
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* explain my code.
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*
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* This program calculates the average test scores of 3 tests and reports what grade they received on average.
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*/
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import java.text.DecimalFormat;
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import java.text.NumberFormat;
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import java.util.Scanner;
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public class TestScoresGrade {
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public static void main(String[] args) {
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// Scanner & Number Format
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Scanner userInput = new Scanner(System.in);
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NumberFormat formattedScore = new DecimalFormat("##.##");
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// Questionnaire
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System.out.println("Welcome to the Test Score Average Calculator!");
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System.out.println("This application will take the average of three test scores and calculate your average as "+
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"well as tell you your grade.");
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System.out.println("What was the score of your first test? Ex. 90 for 90%.");
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double testOneScore = userInput.nextDouble();
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System.out.println("What was the score of your second test? Ex. 75 for 75%.");
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double testTwoScore = userInput.nextDouble();
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System.out.println("What was the score of your third test? Ex. 84 for 84%.");
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double testThreeScore = userInput.nextDouble();
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// Calculation
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double averageScore = (testOneScore + testTwoScore + testThreeScore) / 3;
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/*
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Output Section
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* 90-110 A
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* 80-89 B
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* 70-79 C
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* 60-69 D
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* < 60 F
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*/
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int testAverageCase;
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if (averageScore >= 90 && averageScore <= 110) {
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testAverageCase = 1;
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} else if (averageScore >= 80 && averageScore <= 89) {
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testAverageCase = 2;
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} else if (averageScore >= 70 && averageScore <= 79) {
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testAverageCase = 3;
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} else if (averageScore >= 60 && averageScore <= 69) {
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testAverageCase = 4;
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} else {
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testAverageCase = 5;
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}
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switch (testAverageCase) {
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case 1 -> System.out.println( "Your average test score was: " + formattedScore.format(averageScore) +
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" and your average grade was a 'A'.");
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case 2 -> System.out.println( "Your average test score was: " + formattedScore.format(averageScore) +
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" and your average grade was a 'B'.");
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case 3 -> System.out.println( "Your average test score was: " + formattedScore.format(averageScore) +
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" and your average grade was a 'C'.");
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case 4 -> System.out.println( "Your average test score was: " + formattedScore.format(averageScore) +
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" and your average grade was a 'D'.");
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case 5 -> System.out.println( "Your average test score was: " + formattedScore.format(averageScore) +
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" and your average grade was a 'F'.");
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default -> System.out.println( "You entered your scores incorrectly. Please try again.");
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}
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}
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}

‎Starting out with Java (Tony Gaddis) 7th Ed/Programming Challenges/3. Chapter 3 - Decision Structures/7. Sorted Names/SortedNames.java

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/*
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* This program was written by Kyle Martin on 5/27/2021 for CPT421 Java Programming Principles 1 during Summer Session 1
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* at Southwestern College, Kansas.
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*
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* IMPORTANT: Normally I would not place a bunch of comments in my code describing what my code is doing as I like to
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* have code that is written in a manner to be understandable while reading it. Though, do to the grading rubric I will
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* explain my code.
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*
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* This program takes three names that the user inputs and then sorts them in alphabetical order.
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*/
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import java.util.Scanner;
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public class SortedNames {
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public static void main(String[] args) {
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// Scanner
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Scanner userInput = new Scanner(System.in);
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// Initial Declarations
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final int NUMBER_OF_NAMES_INPUTTED = 3;
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String namePlaceHolder;
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String[] names = new String[NUMBER_OF_NAMES_INPUTTED];
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// Questionnaire
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System.out.println("""
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Welcome to the Name Sorter Application!\s
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Please enter up to three names to be sorted\s
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Example: Jim, Bob, Jeff""");
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// Logic for sorting Names
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for (int i = 0; i < NUMBER_OF_NAMES_INPUTTED; i++) {
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names[i] = userInput.nextLine();
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}
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for (int i = 0; i < NUMBER_OF_NAMES_INPUTTED; i++) {
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for (int j = i + 1; j < NUMBER_OF_NAMES_INPUTTED; j++) {
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if (names[i].compareTo(names[j])>0) {
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namePlaceHolder = names[i];
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names[i] = names[j];
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names[j] = namePlaceHolder;
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}
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}
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}
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// Output
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System.out.println("Names are now sorted: ");
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for (int i = 0; i < NUMBER_OF_NAMES_INPUTTED - 1; i++) {
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System.out.print(names[i] + ", ");
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}
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System.out.println(names[NUMBER_OF_NAMES_INPUTTED - 1]);
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}
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}

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