CSCI-1320 Homework 16: Math Operations

Purpose Statement

This lab assignment provides an opportunity to practice creating a utility class using methods with parameters and return values. You will create several methods to perform basic mathematical operations and conversions.

Instructions

Construct a program that will perform basic mathematical operations, temperature conversion, and circle area calculation, all while utilizing methods with parameters and return values.

Part 1: Basic Mathematical Operations

• Create a Java class called MathOperations.
• Write static methods that perform the following operations:
  • int add(int a, int b) - returns the sum of two integers.
  • int subtract(int a, int b) - returns the difference between two integers.
  • int multiply(int a, int b) - returns the product of two integers.
  • double divide(int a, int b) - returns the result of dividing two integers as a double and handles division by zero.
• In your main method, call each of the above methods, passing appropriate arguments, and display the results.

  Note: For this assignment you will not need to accept user input for this assignment. Simply enter values into your code yourself.

Part 2: Temperature Conversion

• Add a method: double fahrenheitToCelsius(double fahrenheit) that takes a temperature in Fahrenheit and converts it to Celsius using the formula: C = (5.0 / 9.0) * (F - 32).
• In your main method, choose a temperature in Fahrenheit, call the method, and display the Celsius result.

Part 3: Geometry Helper

• Write a method: double calculateCircleArea(double radius) that takes the radius of a circle as a parameter and returns the area of the circle using the formula: A = Math.PI * radius * radius.
• In your main method, call the method with a hardcoded radius, and display the area.

Part 4: Maximum of Three Numbers

• Write a method: int findMax(int a, int b, int c) that takes three integers and returns the largest value.
• Call the method in your main method and display the result.

Example Output

Math Operations:
Addition: 5 + 3 = 8
Subtraction: 10 - 4 = 6
Multiplication: 7 * 6 = 42
Division: 9 / 3 = 3.0

Temperature in Fahrenheit: 100
100.0 Fahrenheit is 37.77777777777778 Celsius.

Radius of the circle: 5
The area of the circle with radius 5 is 78.53981633974483

Maximum of 3 numbers: 9, 15, 7 = 15
            

Save your class as MathOperations.java and submit it through Canvas. Your methods should be placed inside the class, but outside the main method. Remember to declare all methods as static so that they can be called from main.