# Write a Java method to calculate the area of a triangle

## Introduction

In this demo I have used NetBeans IDE 8.2 for debugging purpose. But you can use any java programming language compiler as per your availability..

`import java.util.Scanner;public class Javaexcercise {  public static void main(String[] args)    {        Scanner in = new Scanner(System.in);         System.out.print("Input Side-1: ");         double side1 = in.nextDouble();         System.out.print("Input Side-2: ");         double side2 = in.nextDouble();         System.out.print("Input Side-3: ");         double side3 = in.nextDouble();         System.out.println( isValid(side1, side2,side3) ?                "The area of the triangle is " + areaoftriangle(side1, side2, side3) : "Invalid triangle" );    }   public static boolean isValid(double side1, double side2, double side3) {        if( side1 + side2 > side3 &&                side2 + side3 > side1 &&                side1 + side3 > side2) return true;        else return false;    }   public static double areaoftriangle(double side1, double side2, double side3) {        double area = 0;        double s = (side1 + side2 + side3)/2;        area = Math.sqrt(s*(s - side1)*(s - side2)*(s - side3));        return area;    }}`

# Result 