Write to stay Business Supermarket management system ~ ~ ~ The first part

requirements See: Http://pan.baidu.com/s/1pJPsYF5

Have the opportunity to fill PO to the blog above ~

First use the menu to set up the frame after entering

/* * */package com.pb.menu;public class Menu {/** * login menu */public void login () {System.out.println ("Welcome to use Super Management system") System.out.println ("1, landing system"); System.out.println ("2, Exit");} /** * Main Menu contents */public void MainMenu () {System.out.println ("********** I was split line ***********"); System.out.println ("1, product maintenance"); System.out.println ("2, front desk cashier"); System.out.println ("3, Commodity Management"); System.out.println ("4, return to the previous menu"); System.out.println ("********** I am the dividing line ***********");} /** * Product Maintenance menu contents */public void Mainmenu_1 () {System.out.println ("Commercial super Shopping system >>> product maintenance"); System.out.println ("********** I am the dividing line ***********"); System.out.println ("1, increase commodity information"); System.out.println ("2, change of product information"); System.out.println ("3, delete product information"); System.out.println ("4, Show All product Information"); System.out.println ("5, Inquiry product Information"); System.out.println ("6, storage Management"); System.out.println ("7, Save"); System.out.println ("8, return to the previous menu"); System.out.println ("********** I am the dividing line ***********");} /** * Front cashier menu contents */public void Mainmenu_2 () {System.out.println ("Business overbought system >>> foreground cashier"); System.out.println ("********** I am the dividing line ***********"); System.out.println ("1, shopping settlement"); System.out.println ("2, return to the previous menu"); System.out.println ("********** I am the dividing line ***********");} /** * Product Maintenance menu contents */public void Mainmenu_3 () {System.out.println ("Commercial super Shopping system >>> commodity Management"); System.out.println ("********** I am the dividing line ***********"); System.out.println ("1, set commodity alert inventory"); System.out.println ("2, Goods Sold Today"); System.out.println ("3, Salesperson Management"); System.out.println ("4, return to the previous menu"); System.out.println ("********** I am the dividing line ***********");} public void Mainmenu_3_3 () {System.out.println ("Commercial super Shopping system >>> Commodity management >>> Salesperson Management"); System.out.println ("********** I am the dividing line ***********"); System.out.println ("1, new salesperson Information"); System.out.println ("2, modify sales Information"); System.out.println ("3, delete sales information"); System.out.println ("4, Show All salesman Information"); System.out.println ("5, View salesman information"); System.out.println ("6, save"); System.out.println ("7, Return to the previous menu"); System.out.println ("********** I am Split line ***********");}}

Then my train of thought is very linear, wrote the writing structure on the paper, probably is two things, a call salesman, is used to manipulate the item, one is called good, is the item.

I use a class called user to manage the methods and properties that store both of them. And then manage the calls separately.

So I first write out the main function, and then write about each of the missing parts.

Package Com.pb.user;import Java.util.scanner;import Com.pb.good.good;import com.pb.goodbiz.goods;import Com.pb.isinputright.isright;import Com.pb.management.goodmanagement;import com.pb.management.SalesmanManagement; Import Com.pb.myexception.myexception;import Com.pb.salesman.salesman;import com.pb.salesmanBiz.SalesmanGroup; public class User {Scanner in = new Scanner (system.in); Goodmanagement gm = new Goodmanagement (); Salesmanmanagement sm = new Salesmanmanagement ();//Login Main Menu public boolean Landingman () {System.out.print ("Please enter user name:"); String name = In.next (); System.out.print ("\ n Please enter your password:"); String psd = In.next (), if (Name.equals ("admin")) {if (Psd.equals ("admin")) return true;} return false;} Shop Assistant Login Public boolean landing () {System.out.print ("Please enter user name:"); String name = In.next (); System.out.print ("\ n Please enter your password:"); String psd = In.next (); try {if (SalesmanGroup.userMap.get (name) = = null) throw new MyException ("Username password does not match!") ");} catch (MyException e) {System.out.println (E.getmessage ()); return false;} try {if (! SalesmaNGroup.userMap.get (name). GETPSD (). Equals (PSD)) throw new MyException ("Username password does not match!"). ");} catch (MyException e) {System.out.println (E.getmessage ()); return false;} return true;} New Product public void Add () {System.out.println ("Please Enter product information:"); System.out.println ("Please enter product Name:"); String name = In.next (); try {if (Goods.goodMap.get (name) = null) throw new MyException ("Username already exists! ");} catch (MyException e) {System.out.println (E.getmessage ()); return;} System.out.println ("Please enter commodity price:");d ouble prices = in.nextdouble (); System.out.println ("Please enter commodity stock:"), int storage = In.nextint (); Gm.add (new Good (name, price, storage));} Delete commodity public void Delete () {System.out.println ("Please enter product Name:"); String name = In.next (), if (Goods.goodMap.get (name) = null) {if (Goods.goodMap.get (name). GetStorage () = = 0) {gm.delete (n AME);} else {System.out.println ("The inventory is not 0, you cannot delete the product! ");}} else {System.out.println ("the product does not exist! ");}} Modify commodity public void modify () {System.out.println ("Please enter the product name:"); String name = In.next (); if (Goods.goodMap.get (name) = null) {gm.query (name); String C;do {System.out.println ("Please select the content you want to modify:"); System.out.println ("1, change the name of the product:"); System.out.println ("2, change the price of the Goods:"); System.out.println ("3, change the quantity of goods:"); int n = in.nextint (); switch (n) {case 1:system.out.println ("Please enter the changed product name:"); String newname = In.next (); Good good = Goods.goodMap.get (name); Good.setname (newname); Goods.goodMap.remove (name); Goods.goodMap.put (newname, good); Break;case 2:system.out.println ("Please enter the price of the changed product:"); Goods.goodMap.get (name). Setprice (In.nextdouble ()) break;case 3:system.out.println ("Please enter the quantity of goods after change:"); Goods.goodMap.get (name). Setstorage (In.nextint ()); System.out.print ("Whether to continue modifying this product information (n/y):"); c = In.next ();} while (C.equalsignorecase ("Y"));} ELSESYSTEM.OUT.PRINTLN ("The product does not exist, please verify!") ");} View specified goods public void query () {System.out.println ("Please enter product Name:"); String name = In.next (); if (Goods.goodMap.get (name)! = null) {gm.query (name);} elseSystem.out.println ("The product does not exist, please verify!") ");} Query public void Pricequery () {gm.pricequery () by Price Ascending;} View all Products public void Queryall () {Gm.queryall ();} Check the same day buy goods public void Dayquery () {Gm.dayQuery ();} Fuzzy Find commodity Information public boolean fuzzyquery () {System.out.println ("Please enter commodity keywords:"); String str = In.next (); return gm.fuzzyquery (str);} Save commodity Information public void Save () {Gm.save ();} Commodity entry public void in () {System.out.println ("Please enter product Name:"); String name = In.next (), if (Goods.goodMap.get (name)! = null) {System.out.println ("Please Enter inbound quantity:"); int num = In.nextint (); gm.in (name, num);} ELSESYSTEM.OUT.PRINTLN ("The product does not exist! ");} New Salesperson public void Addsalesman () {System.out.println ("Please enter salesperson information:"); System.out.println ("Please enter user name:"); String name = In.next (); try {if (SalesmanGroup.userMap.get (name) = null) throw new MyException ("The user already exists!") ");} catch (MyException e) {System.out.println (E.getmessage ()); return;} System.out.println ("Please enter password:"); String psd = In.next (); if (! ISRIGHT.ISPSD (PSD)) return; System.out.println ("Please enter your password again:"); String PSD1 = In.next (); if (! ISRIGHT.ISPSD (PSD, PSD1)) return; System.out.println ("Please enter Age:"); int = In.nextint (); Isright.isage (age)) Return;sm.add (The new salesman (name, PSD, age));} Modify Salesperson public void Modifysalesman (){System.out.println ("Please enter user name:"); String name = In.next (); if (SalesmanGroup.userMap.get (name) = null) {sm.query (name); String C;do {System.out.println ("Please select what you want to modify:"); System.out.println ("1, change user name:"); System.out.println ("2, Change Password:"); System.out.println ("3, Change Age:"), int n = in.nextint (), switch (n) {case 1:system.out.println ("Please enter the changed username"); String newname = In.next (); Salesman salesman = SalesmanGroup.userMap.get (name); Salesman.setname (newname); SalesmanGroup.userMap.remove (name); SalesmanGroup.userMap.put (newname, salesman); Break;case 2:system.out.println ("Please enter the changed password:"); SalesmanGroup.userMap.get (name). SETPSD (In.next ()) break;case 3:system.out.println ("Please enter the age after Change:"); SalesmanGroup.userMap.get (name). Setage (In.nextint ()); System.out.print ("Whether to continue modifying this user information (n/y):"); c = In.next ();} while (C.equalsignorecase ("Y"));} ElseSystem.out.println ("User name does not exist! ");} Delete salesperson public void Deletesalesman () {System.out.println ("Please enter the user name to delete:"); String name = In.next (); if (SalesmanGroup.userMap.get (name)! = null) {Salesmangroup.usermap. Remove (name); ElseSystem.out.println ("User name does not exist! ");} Find the specified salesperson public void Querysalesman () {System.out.println ("Please enter the user name to query:"); String name = In.next (), if (SalesmanGroup.userMap.get (name)! = null) {sm.query (name);} elseSystem.out.println ("username does not exist! ");} Find all salespersons public void Queryallsalesman () {Sm.queryall ();} Save public void Savesalesman () {Sm.save ();} Check commodity inventory public void checkstorage (int num) {gm.checkstorage (num);} Shopping public double settlement () {System.out.println ("Please enter product Name:"); String name = In.next (), if (Goods.goodMap.get (name) = = null) {System.out.println ("the product does not exist!") "); return 0;} else {System.out.println ("Please enter purchase quantity:"), int sale = In.nextint (); return Gm.settlement (Goods.goodMap.get (name), sale);}} Payment public void Payment () {Double sum = 0;//Total amount of purchase item double SUM1 = 0;//Total fee Double money = 0;//Single Payment amount string C;do {if (fu Zzyquery ()) {sum + = settlement ();} else {System.out.println ("the product does not exist! ");} System.out.print ("Whether to continue to purchase (n/y):"); c = In.next ();} while (C.equalsignorecase ("Y")), if (sum = = 0) System.out.println ("Welcome Again"), else {do {System.out.println ("Enter payment amount:"); money = In.nextdouble (); Sum1 + = money;if (sum1 < sum) SYSTEM.OUT.PRINTLN ("Payment is less than the amount of money, please continue to pay!" ");} while (Sum1 < sum); System.out.println ("Change:" + (sum1-sum) + "\ n Welcome again");}}}

And then we'll write their management.

—————————————————— Gorgeous split-line ——————————————————————

/** * Manage commodity repositories */package Com.pb.management;import Com.pb.good.good;import Com.pb.goodbiz.goods;public class goodmanagement {Goods Goods = new Goods ();//new public void Add (good good) {Goods.addgood (good);} Delete public void Delete (String name) {Goods.deletegood (name);} Modify public void Modify (good good) {Goods.modifygood (good);} Query specified goods public void query (String name) {Goods.querygood (name);} Query all goods public void Queryall () {Goods.queryall ();} Search for the same day buy goods public void Dayquery () {goods.dayquery ();} Ascending find commodity public void pricequery () {goods.pricequery ();} Fuzzy Lookup Commodity Information public boolean fuzzyquery (String str) {return goods.fuzzyquery (str);} Save public void Save () {Goods.save ();} Inbound public void in (String name, int num) {goods.in (name, num);} Check commodity inventory public void checkstorage (int num) {goods.checkstorage (num);} Checkout public double settlement (good good, int sale) {return goods.settlement (good, Sale);}}

/** * Management shop Assistant Library */package com.pb.management;import Com.pb.salesman.salesman;import com.pb.salesmanBiz.SalesmanGroup; public class Salesmanmanagement {salesmangroup sg = new Salesmangroup ();//new Salesperson public void Add (salesman user) {Sg.add (use R);} Modify Salesperson public void modity (salesman user) {sg.modify (user);} Delete salesperson public void Delete (String name) {sg.delete (name);} Find the specified salesperson public void query (String name) {sg.query (name);} Find all salespersons public void Queryall () {Sg.queryall ();} Save public void Save () {Sg.save ();}}

Write to here first, the concrete bottom operation please see next!

Write to stay Business Supermarket management system ~ ~ ~ The first part