import java.lang.Math;

public class xPoint {

   /**
    * Makes the class executable
    */
   public static void main(String[] args) {
      xPoint p1 = new xPoint(5, 7);
      xPoint p2 = new xPoint(8, 4);
      System.out.println("Distance = " + p1.distanceTo(p2));
   }

   /**
    * Private member containing the x coordinate
    */
   private double x;

   /**
    * Private member containing the y coordinate
    */
   private double y;
   
   /**
    * Method to compute the distance to another xPoint instance
    * @param xPosition
    * @param yPosition
    */
   public xPoint(double xPosition, double yPosition) {
      x = xPosition;
      y = yPosition;
   }

   /**
    * Method to compute the distance to another xPoint instance.
    * @param other Instance to compute distance to.
    * @return Distance between the current instance of xPoint and other.
    */
   public double distanceTo(xPoint other) {
      return Math.sqrt(Math.pow(x - other.x, 2) + Math.pow(y - other.y, 2));
   }
}

Distance = 4.242640687119285