java : string check ”” OR null

package homeWork;
import org.apache.commons.lang3.StringUtils;
public class stringCheck {
	public static void main(String[] args) {

		// TODO Auto-generated method stub

		String strEmptyStr="";

		String strNullObject =null;

		

		System.out.println("no size string-----");

		//String method

		System.out.println(strEmptyStr.isEmpty());

		//StringUtils

		System.out.println(StringUtils.isEmpty(strEmptyStr));
		System.out.println("null----");

		//String method

		//	System.out.println(strNullObject.isEmpty());

		//StringUtils

		System.out.println(StringUtils.isEmpty(strNullObject));

		}

}
result
no size string-----

true

true

null----

true