Create MyTriangle class containing two methods: 1. public static boolean isValid
ID: 3531215 • Letter: C
Question
Create MyTriangle class containing two methods: 1. public static boolean isValid(double side1, double side2, double side 3)
2. public static double area(double side1, double side2, double side3). Write a test program that reads three sides for a triangeland computes the area if input is valid. Otherwise, it displays that the input is invalid. Formula for computing area of triangle: s=(side1 +
side2+side3/2; area=?s(s-side1) (s-side2)(s-side3)
Explanation / Answer
import java.util.Scanner; import java.text.*; public class MyTriangle { public static void main(String[] args) { Scanner input = new Scanner(System.in); boolean valid = true; double side1, side2, side3, area, s; System.out.print("Please enter side1: "); side1 = input.nextDouble(); System.out.print("Please enter side2: "); side2 = input.nextDouble(); System.out.print("Please enter side3: "); side3 = input.nextDouble(); valid = isValid(side1, side2, side3); if(valid) { area = (side1 * side2 * side3); System.out.print("The area of the triangle is: " + area); } else System.out.println("The input is not valid"); } public static boolean isValid(double side1, double side2, double side3) { return(((side1 + side2) >side3) && ((side2 + side3) > side1) && ((side3 + side1) >side2)); } public static double area(double side1, double side2, double side3) { double s = (side1 + side2 + side3)/2; double area = Math.sqrt(s * (s - side1) * (s - side3)); return area; } }