(The MyTriangle class) Create a class named MyTriangle that contains the following two methods:

// (The MyTriangle class) Create a class named MyTriangle that contains the
// following two methods:
//
// /** Return true if the sum of any two sides is
// * greater than the third side. */
// public static boolean isValid(
// 	double side1, double side2, double side3)
//
// /** Return the area of the triangle. */
// public static double area(
// 	double side1, double side2, double side3)
//
// Write a test program that reads three sides for a triangle and computes the
// the input is valid. Otherwise, it displays that the input is invalid. The formula
// computing the area of a triangle is given in Programming Exercise 2.19.
import java.util.Scanner;

public class MyTriangle {
	/** Main Method */
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in); // Create a Scanner

		// Prompt the user to three sides of a triangle
		System.out.print("Enter three sides for a triangle: ");
		double side1 = input.nextDouble();
		double side2 = input.nextDouble();
		double side3 = input.nextDouble();
		
		// Compute area if input is valid. Otherwise, display that input is invalid
		System.out.println(isValid(side1, side2, side3) ? 
			"The area of the triangle is " + area(side1, side2, side3) :
			"Input is invalid");
	}

	/** Method isValid returns true if the sum of any 
	/** two sides is greater than the third side. */
	public static boolean isValid(
		double side1, double side2, double side3) {
		boolean valid =
			side1 + side2 > side3 && side1 + side3 > side2 && side2 + side3 > side1;
		return valid;
	}

	/** Method area returns the area of the triangle. */
	public static double area(
		double side1, double side2, double side3) {
		double s = (side1 + side2 + side3) / 2;
		return Math.sqrt(s * (s - side1) * (s - side2) * (s - side3));
	}
}