JAVA练习：客户管理系统（数组）

缺乏、安全感 2022-05-17 04:43 173阅读 0赞

实体类Customer用来封装客户信息。

控制类CustomerController用来操控实体对象。

View类用来显示信息与用户交互。

Text类用来测试系统。

**运行效果：**

![70][]

# Customer.java #

public class Customer {
    	/*
    	 * 
    	 * @ 客户信息类
    	 * 
    	 * @ 重写toString()
    	 * 
    	 */
    	private String name; // 姓名
    	private String sex; // 性别
    	private int age; // 年龄
    	private String addr; // 地址
    	private String phone;// 联系方式
    	
    	// 不允许创建空对象
    	// public Customer() {
    	// }
    	
    	// 允许地址、联系方式为空构建对象
    	public Customer(String name, String sex, int age) {
    		super();
    		this.name = name;
    		this.sex = sex;
    		this.age = age;
    	}
    	
    	public Customer(String name, String sex, int age, String addr,
    			String phone) {
    		this(name, sex, age);
    		this.addr = addr;
    		this.phone = phone;
    	}
    	
    	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 getAge() {
    		return age;
    	}
    	
    	public void setAge(int age) {
    		this.age = age;
    	}
    	
    	public String getAddr() {
    		return addr;
    	}
    	
    	public void setAddr(String addr) {
    		this.addr = addr;
    	}
    	
    	public String getPhone() {
    		return phone;
    	}
    	
    	public void setPhone(String phone) {
    		this.phone = phone;
    	}
    	
    	@Override
    	public String toString() {
    		return String.format("姓名:%s,性别:%s,年龄:%d,电话:%s,地址:%s", name, sex,
    				age, phone, addr);
    	}
    	
    }

# CustomerController.java #

import java.util.Arrays;
    
    public class CustomerController {
    	private Customer[] customer;
    	private int index; // 索引
    	
    	public CustomerController() {
    		customer = new Customer[10];
    	}
    	
    	public CustomerController(int length) {
    		customer = new Customer[length];
    	}
    	
    	/*
    	 * @ 添加成功返回索引号
    	 * 
    	 * @ 添加失败返回-1
    	 */
    	public int add(Customer customer) {
    		
    		if (contains(customer.getPhone()) > 0) {
    			return -1;// 已经存在
    		}
    		if (index < this.customer.length) {
    			this.customer[index] = customer;
    			index++;
    			return index - 1;
    		} else {
    			return -1;
    		}
    	}
    	
    	/*
    	 * @ int contains(String phone) 是否已经包含某个手机号
    	 * 
    	 * @ 包含返回索引号
    	 * 
    	 * @ 不包含返回-1
    	 */
    	public int contains(String phone) {
    		for (int i = 0; i < index; i++) {
    			if (customer[i].getPhone().equals(phone)) {
    				return i;
    			}
    		}
    		return -1;
    	}
    	
    	/*
    	 * 删除成功返回true,删除失败返回false
    	 */
    	public boolean del(String phone) {
    		int index = contains(phone);
    		if (index < 0) {// 不包含该联系人
    			return false;
    		}
    		for (int i = index; i < this.index - 1; i++) {
    			customer[i] = customer[i + 1];
    			// 要删除的对象后面的对象前移
    		}
    		this.index--;
    		customer[this.index] = null;// 原来末尾的对象清空
    		return true;
    	}
    	
    	/*
    	 * 利用手机号查找
    	 */
    	public Customer query(String phone) {
    		int index = contains(phone);
    		if (index < 0) {
    			return null;
    		}
    		return customer[index];// 下标从0开始
    	}
    	
    	/*
    	 * 得到指定索引处的对象
    	 */
    	public Customer getCustomer(int index) {
    		return customer[index];
    	}
    	
    	/*
    	 * 设置指定索引处的对象
    	 */
    	public void setCustomer(Customer customer, int index) {
    		this.customer[index] = customer;
    	}
    	
    	/*
    	 * 得到整个对象组中已经存入对象的部分
    	 */
    	public Customer[] getCustomers() {
    		return Arrays.copyOf(customer, index);
    	}
    	
    	public int getCapacity() {
    		return customer.length;
    	}
    }

# View.java #

import java.util.Scanner;
    
    public class View {
    	private Scanner input;
    	private CustomerController cc;
    	
    	private static final View view = new View();
    	
    	private View() {
    		input = new Scanner(System.in);
    		cc = new CustomerController(20);
    	}
    	
    	public static View getInstance() {
    		return view;
    	}
    	
    	public void init() {
    		
    		Customer c4 = new Customer("小名", "女", 17, "广州", "891349");
    		cc.add(new Customer("小华", "男", 18, "北京", "123456"));
    		cc.add(new Customer("小李", "男", 20, "成都", "678923"));
    		cc.add(new Customer("王二", "男", 19, "杭州", "673524"));
    		cc.add(c4);
    		cc.add(c4);
    		
    		System.out.println("客户信息列表：");
    		showAll();
    		System.out.println("以上为初始化客户信息列表,方便测试用.\n\n");
    		
    	}
    	
    	public void run() {
    		
    		boolean flag = true;
    		exit: while (flag) {
    			menu();
    			int i = input.nextInt();
    			input.nextLine();
    			
    			switch (i) {
    				case 1:
    					addAcc();
    					break;
    				case 2:
    					delAcc();
    					break;
    				case 3:
    					reviseAcc();
    					break;
    				case 4:
    					quaryAcc();
    					break;
    				case 5:
    					showAll();
    					break;
    				case 6:
    					break exit;
    				default:
    					break;
    			}
    		} // while
    		input.close();
    		System.out.println("系统退出");
    	}// run
    	
    	public void menu() {
    		System.out.println("=========客户管理系统=========");
    		System.out.println(" 1. 添加客户");
    		System.out.println(" 2. 删除客户");
    		System.out.println(" 3. 修改客户信息");
    		System.out.println(" 4. 查看客户信息");
    		System.out.println(" 5. 显示所有信息");
    		System.out.println(" 6. 退出系统");
    		System.out.println("==========================");
    		System.out.print(" 请选择1~6: ");
    	}
    	
    	public Customer newAcc(Customer c, int flag) {
    		String string = "";
    		if (flag == 0 || flag == 1) {
    			System.out.print("\t姓名: ");
    			string = input.nextLine();
    			c.setName(string);
    		}
    		
    		if (flag == 0 || flag == 2) {
    			System.out.print("\t性别: ");
    			string = input.nextLine();
    			c.setSex(string);
    		}
    		
    		if (flag == 0 || flag == 3) {
    			System.out.print("\t年龄: ");
    			int age = input.nextInt();
    			input.nextLine();
    			c.setAge(age);
    		}
    		
    		if (flag == 0 || flag == 4) {
    			System.out.print("\t电话: ");
    			string = input.nextLine();
    			c.setPhone(string);
    		}
    		
    		if (flag == 0 || flag == 5) {
    			System.out.print("\t地址: ");
    			string = input.nextLine();
    			c.setAddr(string);
    		}
    		
    		return c;
    	}
    	
    	public void addAcc() {
    		System.out.println("请输入要添加账户 的信息:");
    		
    		Customer newCustomer = new Customer("", "", 0);
    		newAcc(newCustomer, 0);
    		
    		int index = cc.add(newCustomer);
    		if (index == -1) {
    			System.out.println("添加失败!");
    		} else {
    			System.out.println("添加成功!");
    			System.out.println(newCustomer);
    			index++;
    			System.out.println(String.format("已添加用户%d人,剩余可添加%d人", index,
    					cc.getCapacity() - index));
    		}
    	}
    	
    	public void delAcc() {
    		System.out.print("请输入要删除账户 的手机号:");
    		String phone = input.nextLine();
    		
    		int index = cc.contains(phone);
    		if (index < 0) {
    			System.out.println("不存在该联系人!");
    		} else {
    			System.out.println(cc.getCustomer(index).toString());
    			cc.del(phone);
    			System.out.println("客户删除成功!");
    		}
    		showAll();
    	}
    	
    	public void reviseAcc() {
    		System.out.print("请输入要修改账户 的手机号:");
    		String phone = input.nextLine();
    		
    		int index = cc.contains(phone);
    		Customer c1 = cc.getCustomer(index);
    		if (c1 == null) {
    			System.out.println("不存在该联系人");
    			return;
    		}
    		System.out.println(c1);
    		boolean flag = true;
    		while (flag) {
    			System.out.println("=========修改客户信息=========");
    			System.out.println(" 1. 修改姓名");
    			System.out.println(" 2. 修改性别(这个你...确定要改? ^_*)");
    			System.out.println(" 3. 修改年龄");
    			System.out.println(" 4. 修改联系方式");
    			System.out.println(" 5. 修改地址");
    			System.out.println(" 6. 结束修改");
    			System.out.println("==========================");
    			System.out.print(" 请选择1~6: ");
    			
    			int i = input.nextInt();
    			input.nextLine();
    			if (i == 6) {
    				break;
    			}
    			newAcc(c1, i);
    			
    		} // while
    		System.out.println("修改成功！");
    		cc.setCustomer(c1, index);
    		System.out.println(c1);
    		
    	}
    	
    	public void quaryAcc() {
    		System.out.print("请输入要查看账户 的手机号:");
    		String phone = input.nextLine();
    		Customer c1 = cc.query(phone);
    		if (c1 == null) {
    			System.out.println("不存在该联系人");
    		} else {
    			System.out.println(c1);
    		}
    	}
    	
    	public void showAll() {
    		Customer[] c1 = cc.getCustomers();
    		System.out.println("==========================");
    		System.out.println("总共" + c1.length + "条联系人:");
    		for (Customer customer : c1) {
    			if (customer != null)
    				System.out.println(customer);
    		}
    		System.out.println();
    	}
    }

# Test.java #

public class Test {
    	
    	public static void main(String[] args) {
    		View view = View.getInstance();
    		view.init();
    		view.run();
    	}
    }

## 其他类似源码：[JAVA练习：学生管理系统（Map-HashMap）][JAVA_Map-HashMap] ##

**代码不难，有问题留言。**

[70]: /images/20220517/f3c89e82f82f47858c51456b9fdde3f5.png
[JAVA_Map-HashMap]: http://https//blog.csdn.net/qq_36305530/article/details/81866218