public static void main(String[] args) {

// Scanner object to take input from standard input stream

Scanner scanner = new Scanner(System.in);

// Taking input

System.out.println("Enter length of all three sides of triangle:");

float side1 = scanner.nextFloat();

float side2 = scanner.nextFloat();

float side3 = scanner.nextFloat();

// Logic for area calculation

// Area = sqrt(s * (s - a) * (s - b) * (s - c))

// Where: a, b, c are length of sides of triangle

// s = (a + b + c) / 2

float s = (side1 + side2 + side3) / 2;

float areaOfTriangle = (float) Math.sqrt(s * (s - side1) * (s - side2) * (s - side3));

// Printing result

System.out.println("Area of triangle is: " + areaOfTriangle + " sq.unit");

}