public class BMI {

  private double weight; // in pounds
  private double height; // in inches

  public static final double KILOGRAMS_PER_POUND = 0.45359237; 
  public static final double METERS_PER_INCH = 0.0254;  
  
  public BMI(double weight, double height) {
    this.weight = weight;
    this.height = height;
  }
  
  public double getBMI() {
    double bmi = weight * KILOGRAMS_PER_POUND / 
      ((height * METERS_PER_INCH) * (height * METERS_PER_INCH));
    return Math.round(bmi * 100) / 100.0;
  }
  
  public String getStatus() {
    double bmi = getBMI();
    if (bmi < 16)
      return "seriously underweight";
    else if (bmi < 18)
      return "underweight";
    else if (bmi < 24)
      return "normal weight";
    else if (bmi < 29)
      return "overweight";
    else if (bmi < 35)
      return "seriously overweight";
    else
      return "gravely overweight";
  }

  public double getWeight() {
    return weight;
  }
  
  public double getHeight() {
    return height;  
  }
}