尚硅谷Java入门，项目3

合集 - 学习Java尚硅谷(27)

1.计算机介绍2023-07-102.基本语法2023-07-123.Java基础12023-07-154. 面向对象12023-07-165.面向对象22023-07-186.面向对象3,客户信息2023-07-207.面向对象4-重写，多态2023-07-218.面向对象52023-07-249.面向对象62023-07-2510.异常2023-07-28

11.尚硅谷Java入门，项目32023-07-31

12.多线程12023-08-1513.多线程22023-08-3014.常用类12023-08-3115.常用类22023-09-0116.01-集合框架概述.2023-09-0217.集合框架22023-09-0318.泛型12023-09-0419.数据结构与集合源码1 2023-09-0620.第15章_File类与IO流 12023-09-0621.File类与IO流 22023-09-0722.File类与IO流 32023-09-0923.网络编程 12023-09-1024.反射机制2023-09-1225.JDK8新特性2023-09-1426.第18章_JDK8-17新特性（下)2023-09-1527.注解2023-09-15

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项目3

package com.xin.exercise.myproject03.domain;

/**
 * 笔记本继承于设备接口
 */
public class NoteBook implements Equipment{
    private String model;//机器型号
    private double price;//价格

    public NoteBook() {
    }

    public NoteBook(String model, double price) {
        this.model = model;
        this.price = price;
    }

    public String getModel() {
        return model;
    }

    public void setModel(String model) {
        this.model = model;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }

    @Override
    public String getDescription() {
        return model+"("+price+")";
    }
}
=================
    package com.xin.exercise.myproject03.domain;

/**
 * PC继承设备接口
 */
public class PC implements Equipment{
    private String model;//机器型号
    private String display;//显示器名称

    public PC() {
    }

    public PC(String model, String display) {
        this.model = model;
        this.display = display;
    }

    public String getModel() {
        return model;
    }

    public void setModel(String model) {
        this.model = model;
    }

    public String getDisplay() {
        return display;
    }

    public void setDisplay(String display) {
        this.display = display;
    }

    @Override
    public String getDescription() {
        return model+"("+display+")";
    }
}
===============
    package com.xin.exercise.myproject03.domain;

/**
 * 打印机继承设备接口
 */
public class Printer implements Equipment{
    private String name;//机器型号
    private String type;//机器类型

    public Printer() {
    }

    public Printer(String name, String type) {
        this.name = name;
        this.type = type;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    @Override
    public String getDescription() {
        return name+"("+type+")";
    }
}
================
    package com.xin.exercise.myproject03.domain;

public interface Equipment {
    /**
     * 得到机器详情
     * @return 价格，型号等
     */
    String getDescription();
}
=================
    package com.xin.exercise.myproject03.domain;

/**
 * 员工类
 */
public class Employee {
    private int id;
    private String name;
    private int age;
    private double salary;

    public Employee() {
    }

    public Employee(int id, String name, int age, double salary) {
        this.id = id;
        this.name = name;
        this.age = age;
        this.salary = salary;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public double getSalary() {
        return salary;
    }

    public void setSalary(double salary) {
        this.salary = salary;
    }

    /**
     * 得到员工的4项属性信息
     * @return 4项属性信息
     */
    public String getDetails(){
        return  id + " \t" + name + " \t" + age + " \t" + salary ;
    }

    /**
     * 得到此类的全部信息
     * @return
     */
    @Override
    public String toString() {
        return getDetails();
    }
}


======================
    package com.xin.exercise.myproject03.domain;

import com.xin.exercise.myproject03.service.Status;

/**
 * 程序员类，继承员工类
 */
public class Programmer extends Employee{
    private int memberId;//开发团队的id
    private Status status=Status.FREE;//程序员状态对象
    private Equipment equipment;//程序员设备（接口）对象

    public Programmer() {
    }

    public Programmer(int id, String name, int age, double salary, Equipment equipment) {
        super(id, name, age, salary);
        this.equipment = equipment;
    }

    public int getMemberId() {
        return memberId;
    }

    public void setMemberId(int memberId) {
        this.memberId = memberId;
    }

    public Status getStatus() {
        return status;
    }

    public void setStatus(Status status) {
        this.status = status;
    }

    public Equipment getEquipment() {
        return equipment;
    }

    public void setEquipment(Equipment equipment) {
        this.equipment = equipment;
    }

    @Override
    public String toString() {
        return super.toString()+"  \t程序员 \t"+status+" \t"+" \t"+" \t"+" \t"+" \t"+" \t"+equipment.getDescription();
    }

    /**
     * 得到团队中的对象基础信息
     * @return 团队id/id，姓名，年龄，工资
     */
    public String getTeamBaseDetails(){
        return getMemberId()+"/"+getId()+" \t"+getName()+" \t"+getAge()+" \t"+getSalary();
    }
    /**
     * 得到团队中的程序员信息
     * @return 团队id/id，姓名，年龄，工资，程序员
     */
    public String getDetailsForTeam(){
        return getTeamBaseDetails()+" \t \t程序员";
    }
}
================
    package com.xin.exercise.myproject03.domain;

/**
 * 设计师类，继承程序员类
 */
public class Designer extends Programmer{
    private double bone;//奖金

    public Designer() {
    }

    public Designer(int id, String name, int age, double salary, Equipment equipment, double bone) {
        super(id, name, age, salary, equipment);
        this.bone = bone;
    }

    public double getBone() {
        return bone;
    }

    public void setBone(double bone) {
        this.bone = bone;
    }
    @Override
    public String toString() {
        return getDetails()+"  \t设计师 \t"+getStatus()+" \t "+bone+" \t"+" \t"+" \t"+getEquipment().getDescription();
    }

    /**
     * 得到团队中的设计师信息
     * @return 团队id/id，姓名，年龄，工资，设计师,奖金
     */
    public String getDetailsForTeam(){
        return getTeamBaseDetails()+" \t \t设计师\t"+getBone();
    }
}
==================
    package com.xin.exercise.myproject03.domain;

/**
 * 架构师类，继承于设计师类
 */
public class Architect extends Designer{
    private int stock;//股票

    public Architect() {
    }

    public Architect(int id, String name, int age, double salary, Equipment equipment, double bone, int stock) {
        super(id, name, age, salary, equipment, bone);
        this.stock = stock;
    }

    public int getStock() {
        return stock;
    }

    public void setStock(int stock) {
        this.stock = stock;
    }
    @Override
    public String toString() {
        return getDetails()+" \t架构师 \t"+getStatus()+" \t "+getBone()+" \t"+stock+"\t"+getEquipment().getDescription();
    }
    /**
     * 得到团队中的架构师信息
     * @return 团队id/id，姓名，年龄，工资，架构师,奖金，股票
     */
    public String getDetailsForTeam(){
        return getTeamBaseDetails()+" \t架构师\t"+getBone()+" \t"+getStock();
    }
}
=================
    package com.xin.exercise.myproject03.service;

/**
 * 有关员工的各种数据
 */
public class Data {
    //用数字与名称关联，有利于代码中对比
    public static final int EMPLOYEE = 10;// 员工类型
    public static final int PROGRAMMER = 11;
    public static final int DESIGNER = 12;
    public static final int ARCHITECT = 13;

    public static final int PC = 21;//电脑类型
    public static final int NOTEBOOK = 22;
    public static final int PRINTER = 23;
    /*
    员工类型
    Employee : 10, id, name,age, salary
     Programmer: 11, id, name,age, salary
     Designer :12, id, name, age, salary , bonus
    Architect : 13, id, name,age, salary, bonus, stock
    */
    /**
     * 员工数据中心
     */
    public static final String[][] EMPLOYEES = {
            {"10", "1", "马云", "22", "3000"},
            {"13", "2", "马化腾", "32", "18000", "15000", "2000"},
            {"11", "3", "李彦宏", "23", "7000"},
            {"11", "4", "刘强东", "24", "7300"},
            {"12", "5", "雷军", "28", "10000", "5000"},
            {"11", "6", "任志强", "22", "6800"},
            {"12", "7", "柳传志", "29", "10800", "5200"},
            {"13", "8", "杨元庆", "30", "19800", "15000", "2500"},
            {"12", "9", "史玉柱", "26", "9800", "5500"},
            {"11", "10", "丁磊", "21", "6600"},
            {"11", "11", "张朝阳", "25", "7100"},
            {"12", "12", "杨致远", "27", "9600", "4800"}

    };

    /*
    如下的EQUIPMENTS数组与上面的EMPLOYEES数组元素——对应
     PC:        21,model,display
     NoteBook : 22,model,price
     Printer :  23,name, type
    */
    /**
     * 员工设备类型
     */
    public static final String[][] EQUIPMENTS={
            {},
            {"22", "联想T4", "6000"},
            {"21", "戴尔", "NEC17寸"},
            {"21", "戴尔", "三星17寸"},
            {"23", "佳能2900", "激光"},
            {"21", "华硕", "三星17寸"},
            {"21", "华硕", "三星17寸"},
            {"23", "爱普生20K", "针式"},
            {"22", "惠普m6", "5800"},
            {"21", "戴尔", "NEC 17寸"},
            {"21", "华硕", "三星17寸"},
            {"22", "惠普m6", "5800"}

    };
}
===============
    package com.xin.exercise.myproject03.service;

import com.xin.exercise.myproject03.domain.*;

import java.util.Date;

/**
 * 负责将Data中的数据封装到Employee[]数组中，同时提供相关操作Employee[]的方法。
 */
public class NameListService {
    /**
     * 员工数组
     */
    private Employee[] employees;

    /**
     * 给employees及数组元素进行初始化
     */
    public NameListService() {
        /*
         1. 根据项目提供的Data类构建相应大小的employees数组
         2.再根据Data类中的数据构建不同的对象，包括Employee、Programmer、Designer和Architect对象，以及相关联的Equipment子类的对象
         3.将对象存于数组中
         */
        employees = new Employee[Data.EMPLOYEES.length];
        for (int i = 0; i < employees.length; i++) {
            //获取员工的类型
            int type = Integer.parseInt(Data.EMPLOYEES[i][0]);
            //获取Employee的4个基本信息
            int id =Integer.parseInt(Data.EMPLOYEES[i][1]);
            String name=Data.EMPLOYEES[i][2];
            int age = Integer.parseInt(Data.EMPLOYEES[i][3]);
            double salary = Double.parseDouble(Data.EMPLOYEES[i][4]);
            Equipment equipment;
            double bonus;
            int stock;
            switch (type) {
                case Data.EMPLOYEE:
                    employees[i]=new Employee(id,name,age,salary);
                    break;
                case Data.PROGRAMMER:
                    equipment= createEquipment(i);
                    employees[i]=new Programmer(id,name,age,salary,equipment);
                    break;
                case Data.DESIGNER:
                    equipment= createEquipment(i);
                    bonus=Double.parseDouble(Data.EMPLOYEES[i][5]);
                    employees[i]=new Designer(id,name,age,salary,equipment,bonus);
                    break;
                case Data.ARCHITECT:
                    equipment= createEquipment(i);
                    bonus=Double.parseDouble(Data.EMPLOYEES[i][5]);
                    stock=Integer.parseInt(Data.EMPLOYEES[i][6]);
                    employees[i]=new Architect(id,name,age,salary,equipment,bonus,stock);
                    break;
            }
        }
    }

    /**
     *获取指定index上的员工的设备
     * @return 各个设备的对象（已经重写）
     */
    public Equipment createEquipment(int index){
        int type=Integer.parseInt(Data.EQUIPMENTS[index][0]);
        String model=Data.EQUIPMENTS[index][1];
        switch (type){
            case Data.PC:
                String display=Data.EQUIPMENTS[index][2];
                return new PC(model,display);
            case Data.NOTEBOOK:
                double price=Double.parseDouble(Data.EQUIPMENTS[index][2]);
                return new NoteBook(model,price);
            case Data.PRINTER:
                return new Printer(model,Data.EQUIPMENTS[index][2]);
        }
        return null;
    }

    /**
     * 获取当前所有员工
     * @return 所有员工数组
     */
    public Employee[] getAllEmployees() {
        return employees;
    }

    /**
     * 获取指定id的员工对象。
     * @param id
     * @return
     */
    public Employee getEmployee(int id) throws TeamException {
        for (int i = 0; i < employees.length; i++) {
            if (employees[i].getId()==id){
                return employees[i];
            }
        }
        throw new TeamException("找不到指定的员工");
    }
}
==================
    package com.xin.exercise.myproject03.service;

/**
 * 表示员工的状态
 */
public class Status {
    private final String NAME;//状态类型

    private Status(String name) {
        this.NAME = name;
    }

    public static final Status FREE = new Status("FREE");
    public static final Status BUSY = new Status("BUSY");
    public static final Status VOCATION = new Status("VOCATION");

    public String getNAME() {
        return NAME;
    }

    /**
     * 得到状态对象的状态类型
     * @return 状态类型
     */
    @Override
    public String toString() {
        return NAME;
    }
}
====================
    package com.xin.exercise.myproject03.service;

/**
 * 自定义异常类
 */
public class TeamException extends Exception{
    static final long serialVersionUID = -338751229948L;

    public TeamException() {
    }

    /**
     * 自定义异常类
     * @param message 异常信息
     */
    public TeamException(String message) {
        super(message);
    }
}
==================
    package com.xin.exercise.myproject03.service;

import com.xin.exercise.myproject03.domain.Architect;
import com.xin.exercise.myproject03.domain.Designer;
import com.xin.exercise.myproject03.domain.Employee;
import com.xin.exercise.myproject03.domain.Programmer;

/**
 * 关于开发团队成员的管理:添加、删除等。
 */
public class TeamServise {
    private static int counter = 1;//给memberId赋值使用
    private final int MAX_MEMBER = 5;//限制开发团队的人数
    private Programmer[] team = new Programmer[MAX_MEMBER];//保存开发团队成员
    private int total;//记录开发团队中实际的人数

    /**
     * 获取开发团队中的所有成员
     * @return 实际的开发团队
     */
    public Programmer[] getTeam() {
        Programmer[] t = new Programmer[total];
        for (int i = 0; i < t.length; i++) {
            t[i] = team[i];
        }
        return t;
    }

    /**
     * 将指定的员工添加到开发团队中
     * @param employee 指定的员工对象
     */
    public void addMember(Employee employee) throws TeamException {
//判断指定对象是否能满足加入团队的要求
//     成员已满，无法添加
        if (total == MAX_MEMBER) {
            throw new TeamException("成员已满，无法添加");
        }
//     该成员不是开发人员，无法添加
        if (!(employee instanceof Programmer)) {
            throw new TeamException("该成员不是开发人员，无法添加");
        }
//     该员工已在本开发团队中
        if (isExist(employee)) {
            throw new TeamException("该员工已在本开发团队中");
        }
//     该员工已是某团队成员
//     该员正在休假，无法添加
        Programmer p = (Programmer) employee;//一定不会出现ClassCastException
        if ("BUSY".equals(p.getStatus().getNAME())) {//p.getStatus().getNAME().equals("BUSY")这样不会空指针
            throw new TeamException("该员工已是某团队成员");
        } else if ("VOCATION".equals(p.getStatus().getNAME())) {
            throw new TeamException("该员正在休假，无法添加");
        }
//     团队中至多只能有一名架构师
//     团队中至多只能有两名设计师
//     团队中至多只能有三名程序员

        //获取team已有成员中架构师，设计师，程序员的人数
        int numOfArch = 0, numOfDes = 0, numOfPro = 0;
        for (int i = 0; i < total; i++) {
            if (team[i] instanceof Architect) {
                numOfArch++;
            } else if (team[i] instanceof Designer) {
                numOfDes++;
            } else if (team[i] instanceof Programmer) {
                numOfPro++;
            }
        }
        //查看新入的程序员对象的什么种类，再看这个种类有没有空位
        if (p instanceof Architect) {
            if (numOfArch == 1) {
                throw new TeamException("团队中至多只能有一名架构师");
            }
        } else if (numOfDes == 2) {
            throw new TeamException(" 团队中至多只能有两名设计师");
        } else if (numOfPro == 3) {
            throw new TeamException("团队中至多只能有三名程序员");
        }

        //将p(或e）添加到现有的team中
        team[total++] = p;
        //p的属性赋值
        p.setStatus(Status.BUSY);
        p.setMemberId(counter++);
    }

    /**
     * 判断指定的员工是否已经存在于现有的开发团队中
     *
     * @param employee
     * @return
     */
    private boolean isExist(Employee employee) {
        for (int i = 0; i < total; i++) {
            if (team[i].getId() == employee.getId()) {
                return true;
            }
        }
        return false;
    }

    /**
     * 从团队中删除成员
     *
     * @param memberId
     */
    public void removeMember(int memberId) throws TeamException {
        //判断能否找到要删除对象，找到之后改变其状态
        int i = 0;
        for (; i < total; i++) {
            if (team[i].getMemberId() == memberId) {
                team[i].setStatus(Status.FREE);
                break;
            }
        }
        //找不到指定memberId的对象，抛出异常
        if (i == total) {
            throw new TeamException("找不到指定memberId的员工.册除失败");//如果有异常，则此方法之后的内容均不运行
        }
        //后一个元素覆盖前一个元素，实现删除操作
        for (int j = i + 1; j < total; j++) {
            team[j - 1] = team[j];
        }
        team[--total] = null;
    }
}
=================
    package com.xin.exercise.myproject03.view;

import java.util.Scanner;

/**
 * 项目中提供了TSUtility.java类，可用来方便地实现键盘访问。
 */
public class TSUtility {
    private static Scanner scanner=new Scanner(System.in);
    /**
     * 用途:该方法读取键盘，如果用户键入'1-4'中的任意字符，则方法返回。返回值为用户键入字符。
     */
    public static char readMenuSelection(){
        char s;
        while (true) {
           String str=readKeyBoard(1,false);
           s=str.charAt(0);
            if (s == '1' || s == '2' || s == '3' || s == '4') {
                return s;
            }
            System.out.print("输入错误，请重新输入:");
        }
    }


    /**
     * 该方法提示并等待,直到用户按回车键后返回。
     */
    public static void readReturn(){
        System.out.println("按回车键继续...");
        readKeyBoard(100,true);
    }

    /**
     * 该方法从键盘读取一个长度不超过2位的整数，并将其作为方法的返回值。
     */
    public static int readInt(){
        int n;
        while (true) {
            String str=readKeyBoard(2,false);
            try{
                n=Integer.parseInt(str);
                break;
            }catch (NumberFormatException e){
                System.out.println("数字输入错误，请重新输入：");
            }
        }
        return n;
    }

    /**
     * 从键盘读取'Y'或,'N'，并将其作为方法的返回值。
     */
    public static char readConfirmSelection(){
        char c;
        while (true){
            String s=readKeyBoard(1,false).toUpperCase();
            c=s.charAt(0);
            if (c=='Y'||c=='N'){
                break;
            }
            System.out.print("选择错误，请重新输入：");
        }
        return c;
    }

    /**
     *判断是否按下回车，再判断是否有字符串输入，读取字符串
     * @param limit 输入字符个数
     * @param b 是否可以没有输入的字符串
     * @return 键盘输入字符串
     */
    private static String readKeyBoard(int limit,boolean b){
        String str = "";
        while (scanner.hasNextLine()){//当键盘按回车，才进入循环。如果在此扫描器的输入中有另一行，则返回true
            str=scanner.nextLine();
            if (str.length()==0){
                if (b) {
                    return str;
                }
                else continue;
            }
            if (str.length()<1||str.length()>limit){
                System.out.println("输入长度错误（不大于"+limit+"）,请重新输入：");
                continue;
            }
            break;//输入正确
        }
        return str;
    }
}
===============
    package com.xin.exercise.myproject03.view;

import com.xin.exercise.myproject03.domain.Employee;
import com.xin.exercise.myproject03.domain.Programmer;
import com.xin.exercise.myproject03.service.NameListService;
import com.xin.exercise.myproject03.service.TeamException;
import com.xin.exercise.myproject03.service.TeamServise;

public class TeamView {
    private NameListService listService=new NameListService();//员工列表管理
    private TeamServise teamServise=new TeamServise();//开发团队列表管理

    /**
     * 员工列表界面，开发团队管理界面，以及增删，查看，退出等操作
     */
    public void enterMainMenu(){
       boolean loopFlag=true;
        char menu='0';
       while (loopFlag){
           if (menu!='1'){
               listAllEmployees();
           }

           System.out.print("1-团队列表 2-添加团队成员 3-删除团队成员 4-退出请选择(1-4):");
           menu = TSUtility.readMenuSelection();
           switch (menu){
               case '1':
                   getTeam();
                   break;
               case '2':
                   addMember();
                   break;
               case '3':
                   deleteMember();
                   break;
               case '4':
                  // System.out.println("退出");
                   System.out.println("确认是否退出(Y/N):");
                   char isExit = TSUtility.readConfirmSelection();
                   if (isExit=='Y'){
                       loopFlag=false;
                   }
                   break;
           }
       }
    }

    /**
     * 显示所有的员工信息
     */
    private void listAllEmployees(){
        //System.out.println("显示公司所有的员工信息");
        System.out.println("-----------------------------开发团队调度软件------------------------------\n");
        Employee[] employees = listService.getAllEmployees();
        if (employees==null||employees.length==0){//employees==null用==
            System.out.println("公司中没有任何员工信息");
        }else {
            System.out.println("ID" + " \t姓名" + " \t年龄" + "\t工资 \t" + " \t职位\t" + " \t状态 \t" + " \t奖金\t" + " \t股票\t" + " \t领用设备\t");
            for (int i = 0; i < employees.length; i++) {
                System.out.println(employees[i]);
            }
            System.out.println("----------------------------------------------------------------");
        }
    }

    /**
     * 查看开发团队情况
     */
    private void getTeam(){
       // System.out.println("查看开发团队情况");
        System.out.println("-----------------团队成员列表--------------------");
        Programmer[] team= teamServise.getTeam();
        if (team==null||team.length==0){
            System.out.println("开发团队目前没有成员!");
        }else {
            System.out.println("TID/ID \t姓名 \t年龄 \t工资 \t职位 \t奖金 \t \t股票");
            for (int i = 0; i < team.length; i++) {
                System.out.println(team[i].getDetailsForTeam());
            }
        }
        System.out.println("-----------------------------------------------");
    }

    /**
     * 添加团队成员
     */
    private void addMember(){
       // System.out.println("添加团队成员");
        System.out.println("--------------------添加团队成员----------------------");
        System.out.print("请输入要添加的员工ID:");
        int id = TSUtility.readInt();
        try {
            Employee emp = listService.getEmployee(id);
            teamServise.addMember(emp);
            System.out.println("添加成功");
        } catch (TeamException e) {
            System.out.println("添加失败，原因："+e.getMessage());
        }
        //回车继续
        TSUtility.readReturn();
    }

    /**
     *删除团队成员
     */
    private void deleteMember(){
       // System.out.println("删除团队成员");
        System.out.println("-----------------------删除团队成员-------------------------");
        System.out.println("请输入要删除员工的TID:");
        int memberId=TSUtility.readInt();
        System.out.println("确认是否删除(Y/N):");
        char isDelete = TSUtility.readConfirmSelection();
        if (isDelete=='N'){
            return;
        }
        try {
            teamServise.removeMember(memberId);
            System.out.println("删除成功");
        } catch (TeamException e) {
            System.out.println("删除失败，原因："+e.getMessage());
        }
        //回车继续
        TSUtility.readReturn();
    }
    public static void main(String[] args){
        TeamView team = new TeamView();
        team.enterMainMenu();
    }
}