Code

   
    /// Name: Afaf Nabeeha
    /// Period: 7
    /// Program Name: Heron's Formula
    /// File Name: Heron.java
    /// Date Finished: 3/8/2016 public class Heron

        public class Heron
        {
        	public static void main( String[] args )
        	{
        		double a;
        		
        		a = triangleArea(3, 3, 3);
        		System.out.println("A triangle with sides 3,3,3 has an area of " + a );
        
        		a = triangleArea(3, 4, 5);
        		System.out.println("A triangle with sides 3,4,5 has an area of " + a );
         
        		a = triangleArea(7, 8, 9);
        		System.out.println("A triangle with sides 7,8,9 has an area of " + a );
        
        		System.out.println("A triangle with sides 5,12,13 has an area of " + triangleArea(5, 12, 13) );
        		System.out.println("A triangle with sides 10,9,11 has an area of " + triangleArea(10, 9, 11) );
        		System.out.println("A triangle with sides 8,15,17 has an area of " + triangleArea(8, 15, 17) );
            System.out.println("A triangle with sides 9,9,9 has an area of " + triangleArea(9, 9, 9) );
            //Using a method is easier to add another triangle area. 
        	}
         
        	public static double triangleArea( int a, int b, int c )
        	{
        		// the code in this method computes the area of a triangle whose sides have lengths a, b, and c
        		double s, A;
        
        		s = (a+b+c) / 2.0;
        		A = Math.sqrt( s*(s-a)*(s-b)*(s-c) );
        
        		return A;
        		// ^ after computing the area, "return" it
                
                //HeronsFormula 30 lines of code.
                //HeronsFormulaNoMethod 45 lines of code.
                //Both methods produce the same output. 
                //They both have the same level of difficulty.
        	}
        }
             
    
Picture of the output