Find angle between hour and minute

mport java.io.*;

 

class GFG

{

    // Function to calculate the angle

    static int calcAngle(double h, double m)

    {

        // validate the input

        if (h <0 || m  < 0 || h >12 || m > 60)

            System.out.println("Wrong input");

 

        if (h == 12)

            h = 0;

        if (m == 60)

            m = 0;

 

        // Calculate the angles moved by hour and minute hands

        // with reference to 12:00

        int hour_angle = (int)(0.5 * (h*60 + m));

        int minute_angle = (int)(6*m);

 

        // Find the difference between two angles

        int angle = Math.abs(hour_angle - minute_angle);

 

        // smaller angle of two possible angles

        angle = Math.min(360-angle, angle);

 

        return angle;

    }

     

    // Driver program

    public static void main (String[] args)

    {

        System.out.println(calcAngle(9, 60)+" degree");

        System.out.println(calcAngle(3, 30)+" degree");

    }

}