如何利用java实现一个客户信息管理系统

这篇文章将为大家详细讲解有关如何利用java实现一个客户信息管理系统，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。

类图：

Customer类:

public class Customer {        private String name;    private String sex;    private int age;    private String phone;    private String email;    public Customer(){};    public Customer(String name,String sex,int age,String phone,String email){        this.name=name;        this.sex=sex;        this.age=age;        this.phone=phone;        this.email=email;    }    public String getName(){        return this.name;    }    public void setName(String name){        this.name=name;    }    public String getSex(){        return this.sex;    }    public void setSex(String sex){        this.sex=sex;    }    public String getPhone(){        return phone;    }    public void setPhone(String phone){        this.phone=phone;    }    public int getAge(){        return this.age;    }    public void setAge(int age){        this.age=age;    }    public String getEmail(){        return this.email;    }    public void setEmail(String email){        this.email=email;    }}

CustomerList 类:

public class CustomerList {        private Customer [] customers;        private static int total = 0;        public CustomerList(int totalCustmoers){        customers = new Customer[totalCustmoers];    }            public boolean addCustomer(Customer customer){            if(customer!=null&&total<customers.length)            {customers[total]=customer;                total++;              return true;}            else            { return false;}        }            public boolean replaceCustomer(int index,Customer cust){            if(index>=0 && index <total )            {                customers[index]=cust;return true;            }            else            {                return false;            }        }        public boolean deleteCustomer(int index){        if(index<customers.length)        {            for(int i=index;i<total-1;i++)            {                customers[i]=customers[i+1];            }                customers[total-1]=null;                total--;             return true;        }        else        {            return false;        }    }        public Customer getCustomer(int index){        if(index>=0 && index<total)        {return customers[index];}        else {            return null;        }    }        public Customer[] getAllCustomers(){            Customer [] cust = new Customer[total];            for(int i=0;i<total;i++){                cust[i]=customers[i];            }            return cust;    }        public int getTotal(){        return total;    }}

CustomerVIew类:

public class CustomerView {    private CustomerList customerList = new CustomerList(10);        public void enterMainMenu(){        while(true)        {System.out.println("-------------------客户信息管理软件-------------------");            System.out.println("1   "+"添加客户");            System.out.println("2   "+"修改客户");            System.out.println("3   "+"删除客户");            System.out.println("4   "+"客户列表");            System.out.println("5   "+"退    出");            System.out.println("-----------------------------------------------------");            Scanner input = new Scanner(System.in);            int op = input.nextInt();            switch(op)            {                case 1 :this.addNewCustomer();break;                case 2 :this.modifyCustomer();break;                case 3 :this.deleteCustomer();break;                case 4 :this.listAllCustomers();break;                case 5 :System.exit(0);break;                default:                    System.out.println("重新选择功能");break;            }        }    }        private void addNewCustomer(){                System.out.println("-------------------添加客户-------------------");        Scanner input = new Scanner(System.in);        System.out.println("姓名:");        String name = input.next();        System.out.println("性别:");        String sex=input.next();        System.out.println("年龄:");        int age = input.nextInt();        System.out.println("电话号码:");        String phone = input.next();        System.out.println("电子邮箱:");        String email = input.next();                Customer person = new Customer(name,sex,age,phone,email);        Boolean flag=customerList.addCustomer(person);        if(flag)        {            System.out.println("-------------------添加成功-------------------");        }        else        {            System.out.println("-------------------添加失败-------------------");        }    }        private void modifyCustomer(){        System.out.println("-------------------修改客户-------------------");        System.out.println("要修改的客户id:");        Scanner input = new Scanner(System.in);        int number = input.nextInt();            Customer customer = customerList.getCustomer(number);        System.out.println("姓名:"+customer.getName());        String name = CMUtility.readString(5,customer.getName());        System.out.println("性别:"+customer.getSex());        String sex = CMUtility.readString(5,customer.getSex());        System.out.print("年龄(" + customer.getAge() + "):");        int age = CMUtility.readInt(customer.getAge());        System.out.print("电话(" + customer.getPhone() + "):");        String phone = CMUtility.readString(13, customer.getPhone());        System.out.print("邮箱(" + customer.getEmail() + "):");        String email = CMUtility.readString(15, customer.getEmail());                customer = new Customer(name,sex,age,phone,email);        Boolean flag = customerList.replaceCustomer(number,customer);        if(flag)        {            System.out.println("-------------------修改成功-------------------");        }        else        {            System.out.println("-------------------修改失败-------------------");        }    }        private void deleteCustomer(){        System.out.println("-------------------删除客户-------------------");        System.out.println("要删除的客户id:");        Scanner input = new Scanner(System.in);        int number = input.nextInt();        while(true){            System.out.println("退出(-1)");        if(number>=0 && number<customerList.getTotal())        {            System.out.println("找到指定客户");        }        else if(number==-1)        {            return;        }        else        {            System.out.println("输入错误");break;        }}        System.out.println("是否确认删除该客户?Y/N");        String ch = input.next();        char o = ch.charAt(0);        if(o=='Y')        {           boolean flag = customerList.deleteCustomer(number);           if(flag){               System.out.println("-------------------删除成功-------------------");           }           else           {               System.out.println("-------------------删除失败-------------------");           }        }        else{            return;    }}private void listAllCustomers(){    Customer [] customer=customerList.getAllCustomers();    if(customer.length==0)    {        System.out.println("没有任何客户数据");    }    else{    for(int i=0;i< customer.length;i++)    {        System.out.println("姓名:"+customer[i].getName()+"\t"+"性别"+customer[i].getSex()+"\t"+"年龄:"+customer[i].getAge()+"\t"+"电话号码:"+customer[i].getPhone()+"\t"+"电子邮箱:"+customer[i].getEmail()+"\t");    }}}    public static void main(String[] args) {        CustomerView co = new CustomerView();        co.enterMainMenu();    }}

工具类：

public class CMUtility {        private static Scanner scanner = new Scanner(System.in);           public static String readString(int limit) {            return readKeyBoard(limit, false);        }           public static int readInt(int defaultValue) {            int n;            for (; ; ) {                String str = readKeyBoard(2, true);                if (str.equals("")) {                    return defaultValue;                }                try {                    n = Integer.parseInt(str);                    break;                } catch (NumberFormatException e) {                    System.out.print("数字输入错误，请重新输入：");                }            }            return n;        }

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