diff --git a/src/main/java/org/ntlab/tampoposerver/models/ChatRooms.java b/src/main/java/org/ntlab/tampoposerver/models/ChatRooms.java
new file mode 100644
index 0000000..ea63b32
--- /dev/null
+++ b/src/main/java/org/ntlab/tampoposerver/models/ChatRooms.java
@@ -0,0 +1,65 @@
+package org.ntlab.tampoposerver.models;
+
+import org.apache.logging.log4j.message.Message;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+public class ChatRooms {
+    private Integer chatRoomId;
+    private String user0Id;
+    private String user1Id;
+    private String newContent;
+    private String chatRoomNumber;
+    private List<Message> messages = new ArrayList<>();
+
+    public ChatRooms(Integer chatRoomId) {
+        this.chatRoomId = chatRoomId;
+    }
+
+    public Integer getChatRoomId() {
+        return chatRoomId;
+    }
+
+    public void setChatRoomId(Integer chatRoomId) {
+        this.chatRoomId = chatRoomId;
+    }
+
+    public void addUser(String userId) {
+    }
+
+    public void put(Integer chatRoomId, String chatRoomNumber) {
+    }
+
+    public Integer updateMessage() {
+        return chatRoomId;
+    }
+
+    public ChatRooms updateMessage(Integer chatRoomId, String userId, String newContent) {this.chatRoomId = chatRoomId;
+    this.user0Id = userId;
+    this.newContent = newContent;
+    return this;}
+
+    public ChatRooms addMessage(String senderId, String content) {
+        messages.add(new Message(senderId, content));
+        return this;
+    }
+
+    public List<Message> getMessages() {
+        return messages;
+    }
+    public List<Message> getMessage() { return messages; }
+
+    public static class Message {
+        private String senderId;
+        private String content;
+
+        public Message(String senderId, String content) {
+            this.senderId = senderId;
+            this.content = content;
+        }
+        public String getSenderId() { return senderId;}
+        public String getContent() { return content;}
+    }
+}