/** Taken from Core Web Programming from 
 *  Prentice Hall and Sun Microsystems Press,
 *  http://www.corewebprogramming.com/.
 *  © 2001 Marty Hall and Larry Brown;
 *  may be freely used or adapted.
 */

// Give the ship public move and printLocation methods.

class Ship2 {
  public double x=0.0, y=0.0, speed=1.0, direction=0.0;
  public String name = "UnnamedShip";

  private double degreesToRadians(double degrees) {
    return(degrees * Math.PI / 180.0);
  }

  public void move() {
    double angle = degreesToRadians(direction);
    x = x + speed * Math.cos(angle);
    y = y + speed * Math.sin(angle);
  }

  public void printLocation() {
    System.out.println(name + " is at " +
                       "(" + x + "," + y + ").");
  }
}

public class Test2 {
  public static void main(String[] args) {
    Ship2 s1 = new Ship2();
    s1.name = "Ship1";
    Ship2 s2 = new Ship2();
    s2.direction = 135.0; // Northwest
    s2.speed = 2.0;
    s2.name = "Ship2";
    s1.move();
    s2.move();
    s1.printLocation();
    s2.printLocation();
  }
}