Manager can add doctors(Name,Age,Speciality and working hours), can view the list of doctors and also can remove the doctor..

Manager also can add patient(Name,Age,gender), remove patient , can view patient list, create appoinment(patient name, doctor name, time) and display appoiment .

This is a java program for hospital manager system.. Based on this help me to sketch use case diagram, sequence diagram must include 3minimum object in the diagram.