Java Study Notes 17 (Object-Oriented 10: Comprehensive cases) and java Study Notes

Java Study Notes 17 (Object-Oriented 10: Comprehensive cases) and java Study Notes

At the end of the object-oriented topic

 

Combined with the previous articles, I used many Object-Oriented Knowledge and made a simple case:

Hotel case:

 

Package hotel;/** hotel staff class * Common Features of employees: name, Employee id, Working Method */public class Employee {private String name; private String id; // note: in actual development, you need to provide the user with two sets of constructor // a set of null parameters, one with the parameter public Employee () {} public Employee (String name, String id) {this. name = name; this. id = id;} public String getName () {return name;} public void setName (String name) {this. name = name;} public String getId () {return id;} public void setId (String id) {this. id = id ;}}

 

Package hotel;/** hotel VIP service * chefs and waiters */public interface VIP {public abstract void services ();}

 

Package hotel;/** the Chef class * inherits the Employee class and implements the VIP interface */public class Chef extends Employee implements VIP {public Chef () {super ();} public Chef (String name, String id) {super (name, id);} public void work () {System. out. println ("chef in cooking");} public void services () {System. out. println ("exquisite dishes for VIP ");}}

 

Package hotel;/** attendant class: * inherits the Employee class and implements the VIP interface */public class Waiter extends Employee implements VIP {public Waiter () {super ();} public Waiter (String name, String id) {super (name, id);} public void work () {System. out. println ("Waiter Serving");} public void services () {System. out. println ("VIP special service for waiters ");}}

 

Package hotel;/** defines the Manager class: * inherits the Employee class, and does not have the VIP function * has its own bonus attribute */public class Manager extends Employee {public Manager () {super ();} public Manager (String name, String id, double money) {super (name, id); this. money = money;} private double money; public void work () {System. out. println ("Manager in hotel management ");}}

 

 

Package hotel; import javax. swing. text. changedCharSetException; public class Test {public static void main (String [] args) {// create a Manager, two waiters, two chefs Manager m1 = new Manager ("James ", "Manager 001", 6666.66); m1.work (); Waiter w1 = new Waiter ("Xiao Ming", "Waiter 001"); Waiter w2 = new Waiter ("xiao hong ", "attendant 002"); w1.work (); w1.services (); w2.work (); w2.services (); Chef c1 = new Chef ("Li Si", "Chef 001 "); chef c2 = new Chef ("Wang Wu", "Chef 002"); c1.work (); c1.services (); c2.work (); c2.services ();}/* output: the manager is managing the hotel waiter serving the VIP. The waiter is a VIP special service. The waiter is a VIP special service. The cook is cooking the VIP */