Time Angles

/* Write a program to find the minimum angle between two hands on a 24 hour
 * clock. For instance, the angle at 6:00 is 90 degrees and the angle at 18:00
 * is also 90 degrees.
 */
import java.util.Scanner;
import java.text.DecimalFormat;

public class TimeAngles {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        DecimalFormat df = new DecimalFormat();

        System.out.print("Enter time (e.g. 6:17, 5:40): ");
        String userIn = input.nextLine();

        // Get two integers from time.
        String[] numStr = userIn.split(":");
        int[] times = new int[numStr.length];

        for(int i = 0; i < numStr.length; i++) {
            times[i] = Integer.parseInt(numStr[i]);
        }

        // Calculate angle between two hands.
        double angle = angleCalc(times[0], times[1]);

        System.out.println(df.format(angle) + " degrees");
    }

    static double angleCalc(double hour, double minute) {
        // Calculate angle with (Hours relative to degrees) -
        //      (Minutes relative to degrees)
        // Minute / 60 converts to decimal hour

        double dph = 360 / 24; // Degrees per hour
        double minOnFace = minute / 5; // Where minute hand is at on clock face

        double hourAngle = hour * dph;
        double minAngle = minOnFace * dph;
        double angle = hourAngle - minAngle;

        // If minute > hour, will return negative
        // Make sure number is positive.
        if(angle < 0) {
            angle = Math.abs(angle);
        }

        // Looking for smallest distance of two.
        if(angle > 180) {
            return 360 - angle;
        } else {
            return angle;
        }
    }
}