Example.Java

abstract class BaseClass {
	public static String getVersion() {
		return "Unknown";
	}
	
	public static String getGroup() {
		return "Unknown";
	}
	
	public static String getIdentifier() {
		return getGroup() + getVersion();
	}

	// instance stuff
}

class Class1 extends BaseClass {
	public static String getVersion() {
		return "1";
	}
	
	public static String getGroup() {
		return "Magic";
	}
	
	// specialized Class1 stuff
}

class Class2 extends BaseClass {
	public static String getVersion() {
		return "2";
	}
	
	public static String getGroup() {
		return "Magic";
	}
	
	// specialized stuff for Class2 now
}