public class QuadraticEquation {
  private double myA, myB, myC;
  
  public QuadraticEquation(double a, double b,
                           double c) { 
    myA = a; myB = b; myC = c;
  }
  
  // If the discriminant b*b - 4*a*c
  // is negative, there are no real solutions. 
  public boolean hasSolution() {
    double discriminant =
      myB * myB - 4 * myA * myC;
    return discriminant >= 0;
  }
  
  public double calculateSolution1() {
    return 0;
  }
  
  public double calculateSolution2() {
    return 0;
  }
}