Message reminder application developed in Java

Message reminder application developed in Java

With the rapid development of the mobile Internet, people's demand for receiving and processing messages continues to increase. In order to facilitate users to obtain important information in time, we developed a message reminder application based on Java language.

Application functions:

1. Real-time message push: The application can receive real-time messages from the server or other clients and push the messages to users in the form of message reminders.
2. Customized reminder method: You can choose the appropriate reminder method according to the user's needs, such as pop-up windows, notification bars, sounds, etc.
3. Message filtering: Users can set message filtering rules according to their own needs and only receive messages of interest.
4. Message classification: Messages can be classified and managed according to different categories to facilitate user search and processing.

The following is a code example of the application:

import java.util.ArrayList;
import java.util.List;

public class NotificationApp {
    private List<Message> messages;
    private NotificationListener notificationListener;
    
    public NotificationApp() {
        messages = new ArrayList<>();
        notificationListener = new NotificationListener();
    }
    
    public void pushMessage(Message message) {
        messages.add(message);
        notificationListener.onMessageReceived(message);
    }
    
    public void setNotificationListener(NotificationListener listener) {
        this.notificationListener = listener;
    }
    
    public List<Message> getUnreadMessages() {
        List<Message> unreadMessages = new ArrayList<>();
        for (Message message : messages) {
            if (!message.isRead()) {
                unreadMessages.add(message);
            }
        }
        return unreadMessages;
    }
    
    public static void main(String[] args) {
        NotificationApp app = new NotificationApp();
        
        // 设置消息提醒方式为弹窗
        app.setNotificationListener(new PopupNotificationListener());
        
        // 模拟接收消息
        Message message1 = new Message("1", "这是一条重要消息", false);
        app.pushMessage(message1);
        Message message2 = new Message("2", "这是一条普通消息", false);
        app.pushMessage(message2);
        
        // 查看未读消息
        List<Message> unreadMessages = app.getUnreadMessages();
        for (Message message : unreadMessages) {
            System.out.println("未读消息：" + message.getContent());
        }
        
        // 将消息设置为已读
        message1.setRead(true);
        
        // 再次查看未读消息
        unreadMessages = app.getUnreadMessages();
        for (Message message : unreadMessages) {
            System.out.println("未读消息：" + message.getContent());
        }
    }
}

class Message {
    private String id;
    private String content;
    private boolean read;
    
    public Message(String id, String content, boolean read) {
        this.id = id;
        this.content = content;
        this.read = read;
    }
    
    public String getId() {
        return id;
    }
    
    public String getContent() {
        return content;
    }
    
    public boolean isRead() {
        return read;
    }
    
    public void setRead(boolean read) {
        this.read = read;
    }
}

interface NotificationListener {
    void onMessageReceived(Message message);
}

class PopupNotificationListener implements NotificationListener {
    @Override
    public void onMessageReceived(Message message) {
        System.out.println("收到新消息弹窗提醒：" + message.getContent());
    }
}

The above code implements a simple message reminder application. Messages can be pushed to users through the pushMessage method of the NotificationApp class, and reminder methods can be set through the setNotificationListener method. The specific reminder method can be customized by implementing the NotificationListener interface. In the example, we implement PopupNotificationListener, a pop-up reminder method.

The application also provides the function of obtaining unread messages and setting messages as read, making it convenient for users to manage and process unread messages.

This message reminder application can be widely used in various fields to provide users with timely message push and management services.

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