In the main program so that it calls the method named mystery , passing it the i

Question

In the main program so that it calls the method namedmystery, passing it the input value, and printing theresult. I don't understand why l am getting an error message when ltry to compile

mport javax.swing.*;

public class Lab7Mystery {
    public static void main(String[] args) {
        String input;
        double x;

        input =JOptionPane.showInputDialog("Enter a real number " +
            "(must begreater than one):");
        x =Double.parseDouble(input);

       double mystery();



        System.out.println("Theresult of mystery is:");

        System.out.println(" End ofprocessing.");

   }




    public static double mystery(double a) {
        long q = 1, b;
        double x, xxx;

        b = (long)a;
        do {
            b>>= 3;
            q<<= 1;
        } while (b != 0);
        x = q;
        xxx = x * x * x;
        x = x * (xxx + a + a) / (xxx+ xxx + a);
        xxx = x * x * x;
        x = x * (xxx + a + a) / (xxx+ xxx + a);
        xxx = x * x * x;
        x = x * (xxx + a + a) / (xxx+ xxx + a);
        xxx = x * x * x;
        x = x * (xxx + a + a) / (xxx+ xxx + a);
        return x;
    }
}

Explanation / Answer

please rate - thanks import javax.swing.*; public class Lab7Mystery {     public static void main(String[] args) {         String input;         double x,y;         input =JOptionPane.showInputDialog("Enter a real number " +            "(must be greater than one):");         x =Double.parseDouble(input);       y= mystery(x);                      System.out.println("Theresult of mystery is:"+y);        System.out.println(" End of processing.");    }     public static double mystery(double a) {         long q = 1, b;         double x, xxx;         b = (long)a;         do {             b >>= 3;             q

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