Java : Function to return type of Object

ObjectTypeDetector.java

import java.util.ArrayList;
import java.util.Date;

public class ObjectTypeDetector {

  public static String getObjectType(Object obj) {
		String objectType = "null";
		if (obj != null) {
			objectType = obj.getClass().getName();
			objectType = objectType.substring(objectType.lastIndexOf(".") + 1);
		}
		return objectType;
	}

	public static void main(String[] args) {

		ArrayList<Object> list = new ArrayList<Object>();
		list.add(new String("Mike"));
		list.add(999);
		list.add(99.0);
		list.add(new Date());
		list.add(true);
		list.add(new Object());
		list.add(null);

		for (Object obj : list) {
			System.out.println(obj + " " + getObjectType(obj));
		}
	}
}