//An instance of this class represents a position in a 2-D grid
// and has 2 integer attributes, a row and a column; these may 
// assume any int value, positive, zero, or negative
//An instance of this class is immutable
//
public class Position
{
   //Instance Variables
	private final int row;
	private final int col;
	
   public Position(int row, int col)
   {
      this.row = row;
      this.col = col;
   }
   
  	//Return all Positions orthogonally adjacent to this Position
   public Position[] neighbors()
   {
      return null;
   }
   
   //Return true if parameter other is orthogonally adjacent to 
   // this Position, false otherwise
	public boolean isAdjacentTo(Position other)
	{
      return false;
	}
	
   //Override
	public String toString()
	{
		return "[" + this.row + "," + this.col + "]";
	}
	
   //Override
	public boolean equals(Object other)
	{
      return false;
	}
}