class Line

http://cseweb.ucsd.edu/users/savitch/java/SavitchIn.txt
http://paulbourke.net/geometry/lineline2d/

class Line
{
  private int x1, x2;
  private int y1, y2;
  public Line(int x1, y1,x2,y2)
  {

  }
  boolean intersect(Line k)
  {
 
  }
}