Code

   
    /// Name: Afaf Nabeeha
    /// Period: 7
    /// Program Name: Distance Formula
    /// File Name: Distance.java
    /// Date Finished: 3/8/2016 public class Distane
        
         public class Distance
          {
          	public static void main( String[] args )
          	{
          		// test the formula a bit
          		double d1 = distance(-2,1 , 1,5);
          		System.out.println(" (-2,1) to (1,5) => " + d1 );
           
          		double d2 = distance(-2,-3 , -4,4);
          		System.out.println(" (-2,-3) to (-4,4) => " + d2 );
           
          		System.out.println(" (2,-3) to (-1,-2) => " + distance(2,-3,-1,-2) );
           
          		System.out.println(" (4,5) to (4,5) => " + distance(4,5,4,5) );
          	}
           
          	public static double distance( int x1, int y1, int x2, int y2 )
          	{
          		double distance = Math.sqrt( (x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1) );
                  return distance;
          	}
          }
             
    
Picture of the output