Assignment #93 and Distance Formula

Code

    /// Name: Ali Kurland
    /// Period: 6
    /// Program Name: Distance Formula
    /// File Name: DistanceFormula.java
    /// Date Finished: 11/16/2015
    
    public class DistanceFormula
    {
    	public static void main( String[] args )
    	{
    		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;
            
            distance = Math.sqrt( ( x2 - x1 )*( x2 - x1 ) + ( y2 - y1 )*( y2 - y1 ) );
                
            return distance;
    	}
    }
    

Picture of the output