Degrees to seconds converter, add and subtract.

DegMinSec.java

import java.util.Arrays;

public class DegMinSec {

/* 
		// calc deg-min-sec to deg 
		dd = Math.signum(d) * (Math.abs(d) + (m / 60.0) + (s / 3600.0));

		// res is in "ddd.mmss" format
		jshell> decimal res = Math.signum(6) * (Math.abs(6) + (18 / 60.0) + (34 / 3600.0));
		$48 ==> 6.309444444444444

		// the res can be added to some other no, then do below to get d-m-s

		d = (int)dd;  // Truncate the decimals
		t1 = (dd - d) * 60;
		m = (int)t1;
		s = (t1 - m) * 60;
*/

	// res is in "ddd.mmss" format
	// get in degrees
	public static double degrees(int degree, int minutes, int seconds){
		return Math.signum(degree) * (Math.abs(degree) + (minutes / 60.0) + (seconds / 3600.0));
	}

	public static double degrees(int arr[]){
		return degrees(arr[0], arr[1], arr[2]);
	}

	// get in degrees, minutes and seconds, can be used as ar[0]-ar[1]-ar[2]
	public static int[] getGeoCoords(int degree, int minutes, int seconds) {

		double resDegrees = degrees(degree, minutes, seconds);
		return getGeoCoordsFromDegree(resDegrees);
	}

	public static int[] getGeoCoords(int arr[]) {
		return getGeoCoords(arr[0], arr[1], arr[2]);
	}

	public static int[] getGeoCoordsFromDegree(double resDegrees) {
		int d = (int)resDegrees;  // Truncate the decimals
		double t1 = (resDegrees - d) * 60;
		int m = (int)t1;
		double s = (t1 - m) * 60.0;

		int ar[] = { d, m, (int) s};

		return ar;
	}

	public static int[] add(int dms1[], int dms2[]) {
		double d1 = degrees(dms1);
		double d2 = degrees(dms2);

		double res = d1 + d2;
		// System.out.println("Add is " + res);	

		// if more than 360 subtract it from 360
		if(res > 360)
			return minus(getGeoCoordsFromDegree(res), getGeoCoordsFromDegree(degrees(360, 0, 0)));

		return getGeoCoordsFromDegree(res);
	}

	public static int[] minus(int dms1[], int dms2[]) {
		double d1 = degrees(dms1);
		double d2 = degrees(dms2);

		// swap
		if(d1 > d2){
			double d = d2;
			d2 = d1;
			d1 = d;
		}

		double res = d2 - d1;
		// System.out.println("Sub is " + res);	

		return getGeoCoordsFromDegree(res);
	}

	public static void main(String ags[]) throws Exception {
		if (ags.length != 3) {
			System.err.println("Usage:  java DegMinSec deg min sec");
			System.exit(1);
		}

		int ar1[] = { Integer.parseInt(ags[0]), Integer.parseInt(ags[1]), Integer.parseInt(ags[2])};
		System.out.printf("Deg is %s\n", DegMinSec.degrees(ar1)); 
		System.out.printf("Get Coords as arr is %s\n", Arrays.toString(DegMinSec.getGeoCoords(ar1))); 
		int ar2[] = { 284, 40, 20 };
		System.out.printf("Add arr is %s\n", Arrays.toString(DegMinSec.add(ar1, ar2))); 
		System.out.printf("Minus arr is %s\n", Arrays.toString(DegMinSec.minus(ar1, ar2))); 
	}
}