class Line {
  int x1, y1, x2, y2;
  static void print(Line theLine) {
    System.out.print("(" + theLine.x1 + ", " + 
                     theLine.y1 + "):(" +
                     theLine.x2 + ", " + 
                     theLine.y2 + ")" );
  }
  static void translate(Line theLine, int dx, int dy) {
    theLine.x1 = theLine.x1 + dx;
    theLine.y1 = theLine.y1 + dy;
    theLine.x2 = theLine.x2 + dx;
    theLine.y2 = theLine.y2 + dy;
  }
  static double length(Line theLine) {
    int dx = theLine.x1 - theLine.x2;
    int dy = theLine.y1 - theLine.y2;
    return Math.sqrt(dx * dx + dy * dy);
  }
}

class LineTest {
  public static void main(String[] args) {
    Line line1 = new Line();
    Line line2 = new Line();
    line1.x1 = 10;
    line1.y1 = 20;
    line1.x2 = 50;
    line1.y2 = 100;
    line2.x1 = 25;
    line2.y1 = 33;
    line2.x2 = 99;
    line2.y2 = 100;
    System.out.print("Line1: ");
    Line.print(line1);
    System.out.println(", length = " + Line.length(line1));
    System.out.print("Line2: ");
    Line.print(line2);
    System.out.println(", length = " + Line.length(line2));
    Line.translate(line1, 100, 200);
    System.out.print("Line1: ");
    Line.print(line1);
    System.out.println(", length = " + Line.length(line1));
  }
}