一个Java的控制台应用程序该程序为一个个人备忘录项目,能够实现用户的登录,个人备忘录的新增,标记该备忘是否已完成,个人备忘录的删除,修改,需要使用面向对象、封装继承多态等基本知识内容,完成上述所有功能并给出完正代码
时间: 2024-09-24 07:07:04 浏览: 39
创建一个简单的Java控制台应用程序作为个人备忘录系统,我们可以利用面向对象的设计原则,包括封装、继承和多态。这里是一个简化的示例,我们将创建一个`User`类,以及相关的备忘录管理类如`Note`、`MemoManager`。
首先,定义基础类:
```java
public class User {
private String username;
private String password;
public User(String username, String password) {
this.username = username;
this.password = password;
}
// getters and setters for properties...
}
public abstract class Note {
private boolean completed;
protected String content;
public Note(String content) {
this.content = content;
}
// getters and setters, abstract methods like markAsCompleted(), getContent()
}
```
然后创建具体的备忘录类,继承自`Note`:
```java
public class Memo extends Note {
public Memo(String content) {
super(content);
}
// Implement the abstract method in base class
@Override
public void markAsCompleted() {
completed = true;
}
// ... other methods as needed
}
```
接下来,`MemoManager`类用于处理用户操作:
```java
import java.util.ArrayList;
import java.util.List;
public class MemoManager {
private List<Note> notes = new ArrayList<>();
public void addUser(User user) {
// Add logic to validate and store user
}
public void addNote(Memo memo, User user) {
if (user.isAuthorized()) { // Assume there's a validation check here
notes.add(memo);
}
}
public void deleteNote(Note note, User user) {
// Delete logic with authorization check
}
// Similar methods for modifying and marking complete
}
```
最后,编写控制台交互部分:
```java
public static void main(String[] args) {
User admin = new User("admin", "password");
MemoManager manager = new MemoManager();
manager.addUser(admin);
// Console interaction example
Scanner scanner = new Scanner(System.in);
while (true) {
System.out.println("Choose an action:");
// Add, modify, delete options, etc.
}
}
```
这只是一个简化版的例子,并未包含完整的错误检查和用户体验设计。为了实际运行这个程序,你需要添加更多的方法来处理用户输入验证和权限控制。
阅读全文