Quadratic Solver giving output NaN

Question

I'm extremely new to java and I was asked to program a quadratic equation solver for a class in school. I'm not sure if my code is even remotely correct, but I get the output "NaN" for whatever input I give.

import javax.swing.JOptionPane;
import static java.lang.Math.sqrt;

public class FunTest
{
    public static void main(String[] args)
    {
      String number1=JOptionPane.showInputDialog("Enter A");
      int a=Integer.parseInt(number1);

      String number2=JOptionPane.showInputDialog("Enter B.");
      int b=Integer.parseInt(number2);

      String number3=JOptionPane.showInputDialog("Enter C.");
      int c=Integer.parseInt(number3);

      double discriminantsquared=((b^2)-(4*a*c));
      double discriminant=Math.sqrt(discriminantsquared);

      double x1=(((b*-1)+discriminant)/(2*a));
      double x2=(((b*-1)-discriminant)/(2*a));

      String output=("x1= "+x1+"\n"+"x2= "+x2);
      JOptionPane.showMessageDialog(null, output);
    }
}

Answer 1

b^2 is not "b to the power of two", it is "b xored with 2". For power you could use Math.pow(b, 2), or simply b * b.