import javax.swing.JOptionPane;

public class uppg4_moment4
{
    public static void main(String [] args)
    {
        String a = JOptionPane.showInputDialog("Ange den första kateten: ");
        String b =JOptionPane.showInputDialog("Ange den andra kateten: ");
        double hypotenusa = hypotenusa(a, b);
        JOptionPane.showMessageDialog(null, hypotenusa);

            calculator svar = new calculator();
            svar.hypotenusa(a,b);

    }
class calculator {
    public double hypotenusa(String a, String b)
    {
        double Katet1=Double.parseDouble(a);
        double Katet2=Double.parseDouble(b);
        double hypotenusa = Math.sqrt(Math.pow(Katet1, 2) + Math.pow(Katet2, 2));
        return hypotenusa;

    }
}

}