Assignemnt #93 and Distance Formula

Code
/// Name: Yordan Rashkov
/// Period: 7
/// Program Name: Distance Formula
/// File Name: DF.java
/// Date Finished: 3/15/2016

public class DF

{

	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 )
	
	{
		
		return Math.sqrt( ( (x2-x1)*(x2-x1) )+( (y2-y1)*(y2-y1) ) );
	
	}

}