每日一言
泪眼问花花不语，乱红飞过秋千去。 —欧阳修-
简单的通讯录实现，跟写Java实现图书管理系统差不多，用到的知识也差不多，就当个小练习，练习一下写Java程序的手感。
Java实现图书管理系统
关于通讯录的代码都写在下面了
1. 代码
1.1 contact 包
1.1.1 Contact
package contact;
public class Contact {
private int size;//当前占用容量
private Person[] people = new Person[3];
public int getSize() {
return size;
}
public void setSize(int size) {
this.size = size;
}
public Person getPerson(int pos) {
return people[pos];
}
public void setPerson(Person person,int pos) {
this.people[pos] = person;
}
public Boolean isFull(Contact contact) {
return contact.getSize() == people.length;
}
}
1.1.2 Person
package contact;
public class Person {
private string name;
private String sex;
private int age;
private String telephone;
public String getName() {
return name;
}
public int getAge() {
return age;
}
@Override
public String toString() {
return "Person{" +
"名字='" + name + '\'' +
", 性别='" + sex + '\'' +
", 年龄=" + age +
", 电话='" + telephone + '\'' +
'}';
}
public Person(String name, String sex, int age, String telephone) {
this.name = name;
this.sex = sex;
this.age = age;
this.telephone = telephone;
}
}
1.2 option 包
1.2.1 AddContact
package option;
import contact.Contact;
import contact.Person;
import java.util.Scanner;
public class AddContact implements IOperation{
@Override
public void work(Contact contact) {
if(contact.isFull(contact)) {
System.out.println("通讯录已满，无法添加！");
return;
}else {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入联系人姓名:>");
String name = scanner.nextLine();
System.out.println("请输入联系人性别:>");
String sex = scanner.nextLine();
System.out.println("请输入联系人年龄:>");
int age = scanner.nextInt();
System.out.println("请输入联系人电话:>");
String telephone = scanner.next();
Person person = new Person(name,sex,age,telephone);
int size = contact.getSize();
contact.setPerson(person,size);
contact.setSize(size+1);
System.out.println("添加成功！");
}
}
}
1.2.2 DelContact
package option;
import contact.Contact;
import java.util.Scanner;
public class DelContact implements IOperation{
@Override
public void work(Contact contact) {
int size = contact.getSize();
if(0 == size) {
System.out.println("通讯录为空，无法删除！");
return;
}else {
System.out.println("请输入要删除的联系人姓名");
Scanner scanner = new Scanner(System.in);
String name = scanner.nextLine();
for (int i = 0; i
1.2.3 ExitContact
package option;
import contact.Contact;
public class ExitContact implements IOperation{
@Override
public void work(Contact contact) {
//释放占用内存
for (int i = 0; i
1.2.4 FindContact
package option;
import contact.Contact;
import java.util.Scanner;
public class FindContact implements IOperation{
@Override
public void work(Contact contact) {
int size = contact.getSize();
System.out.println("请输入要查找的联系人姓名");
Scanner scanner = new Scanner(System.in);
String name = scanner.nextLine();
for (int i = 0; i
1.2.5 IOperation 接口
package option;
import contact.Contact;
public interface IOperation {
void work(Contact contact);
}
1.2.6 ModifyContact
package option;
import contact.Contact;
import contact.Person;
import java.util.Scanner;
public class ModifyContact implements IOperation{
@Override
public void work(Contact contact) {
int size = contact.getSize();
System.out.println("请输入要修改的联系人姓名");
Scanner scanner = new Scanner(System.in);
String name = scanner.nextLine();
for (int i = 0; i ");
String name1 = scanner.nextLine();
System.out.println("请输入联系人性别:>");
String sex = scanner.nextLine();
System.out.println("请输入联系人年龄:>");
int age = scanner.nextInt();
System.out.println("请输入联系人电话:>");
String telephone = scanner.next();
Person person = new Person(name1,sex,age,telephone);
contact.setPerson(person,i);
System.out.println("修改成功！");
return;
}
}
System.out.println("没有你要修改的联系人！");
}
}
1.2.7 ShowContact
package option;
import contact.Contact;
public class ShowContact implements IOperation{
@Override
public void work(Contact contact) {
if(0 == contact.getSize()) {
System.out.println("通讯录为空");
return;
}else {
for (int i = 0; i
1.3 Main
import contact.Contact;
import option.AddContact;
import java.util.Scanner;
public class Main {
public static int menu() {
System.out.println("*********************");
System.out.println("1.新增联系人");
System.out.println("2.删除联系人");
System.out.println("3.展示联系人");
System.out.println("4.查找联系人");
System.out.println("5.修改联系人");
System.out.println("0.退出通讯录");
System.out.println("*********************");
System.out.println("请输入选项:>");
Scanner scanner = new Scanner(System.in);
return scanner.nextInt();
}
public static void main(String[] args) {
int op;
User user = new User();
Contact contact = new Contact();
do {
op = menu();
if(op > user.iOperation.length || op
1.4 User
import contact.Contact;
import option.*;
public class User {
IOperation[] iOperation = new IOperation[]{
new ExitContact(),
new AddContact(),
new DelContact(),
new ShowContact(),
new FindContact(),
new ModifyContact(),
};
public void doOperation(Contact contact,int op) {
this.iOperation[op].work(contact);
}
}
2. 效果
2.1 添加联系人
2.2 展示联系人
2.3 删除联系人
2.4 查找联系人
2.5 修改联系人
2.6 退出通讯录
结语
请给自己些耐心，一口吃不成胖子。
山外青山楼外楼，莫把百尺当尽头。
保持空杯心态加油努力吧！
都看到这里啦！真棒(*^▽^*)
可以给作者一个免费的赞赞吗，这将会鼓励我继续创作，谢谢大家
编程小白写作，如有纰漏或错误，欢迎指正
