Group assignment algorithm for classroom assignment activity 1

ClassActivity1.java

public class ClassActivity1 {

	/**
	 * Prints Student , Group ID
	 * 
	 * @param args[0] is student first and last name 
	 * Example: java ClassActivity1 "Ben Holland"
	 */
	public static void main(String[] args) {
		String studentName = args[0];
		char[] characters = studentName.toUpperCase().replaceAll("\\s+", "").toCharArray();
		int groupID = 0;
		if (characters.length >= 3) {
			int maxGroups = 5;
			// Note that 'A' == 65, 'A' = 0x41
			int asciiSumFirst3Chars = (int) characters[0] + (int) characters[1] + (int) characters[2];
			groupID = asciiSumFirst3Chars % maxGroups;
		}
		System.out.println("Student: " + studentName + ", Group: " + (groupID + 1));
	}

}