How to write the code of personnel information management system implemented by java
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To achieve additions, deletions, changes and searches.
The practice of getting started with java on Mini Program
1.Person class
Package p1; public class Person {/ / Person attributes private int num; private String name; private String sex; private int salary; public Person (int num, String name, String sex, int salary) {super (); this.num = num; this.name = name; this.sex = sex; this.salary = salary } / / A pair of Perosn operation methods public int getNum () {return num;} public void setNum (int num) {this.num = num;} public String getName () {return name;} public void setName (String name) {this.name = name;} public String getSex () {return sex } public void setSex (String sex) {this.sex = sex;} public int getSalary () {return salary;} public void setSalary (int salary) {this.salary = salary;}}
2.SysMenu class
Package p1; public class SysMenu {public static final String [] MENU = {"1. Employee Information Management, 2. Exit "}; public static final String [] OPERATION_MENU = {" 1. Add "," 2. Check "," 3. Modify "," 4. Delete "," 5. Return "}; public static void showMenu (String [] Menu) {for (int I = 0; I < Menu.length; iTunes +) System.out.print (Menu [I] +"\ t\ t "); System.out.println (); System.out.println ("-") }}
3.SysInfo class
Package p1; import java.util.ArrayList;import java.util.List; public class SysInfo {private static List informationList = new ArrayList (); / / get informationList public static List getList () {return informationList;}}
4.InformationService class
Package p1; import java.util.List; public class InformationService {private List informationList = SysInfo.getList (); / / get information list public List getList () {return informationList;} / / find information by number public Person getPersonByNum (final int num) {if (num < 1) {System.out.println ("numbering error"); return null } for (int I = 0; I < informationList.size (); iTunes +) {Person p = (Person) informationList.get (I); if (p.getNum () = = num) {System.out.println ("find success"); return p;}} System.out.println ("find failed") Return null;} / / View a single Person message public void showAPerson (Person p) {System.out.println ("No.\ t\ t name\ t\ t gender\ t\ t salary"); System.out.println (p.getNum () + "\ t\ t" + p.getName () + "\ t\ t" + p.getSex () + "\ t\ t" + p.getSalary ()) } / / show all Person public void showPerson () {System.out.println ("No.\ t\ t name\ t\ t gender\ t\ t salary"); List ps = getList (); for (int I = 0; I < ps.size (); iTunes +) {Person p = (Person) ps.get (I) System.out.println (p.getNum () + "\ t\ t" + p.getName () + "\ t\ t" + p.getSex () + "\ t\ t" + p.getSalary ());}} / / find information by name public Person getPersonByName (final String name) {if (name = = null) return null; for (int I = 0; I < informationList.size () Return null; +) {Person p = (Person) informationList.get (I); if (p.getName (). Equals (name)) {return p;}} return null;} / / check whether the object exists public boolean CheckExitByNum (int num) {for (int iTuno)
