diff --git a/app/src/main/java/com/example/cosmosclient/app/Cosmos.java b/app/src/main/java/com/example/cosmosclient/app/Cosmos.java
index 3065ed9..63fd1cc 100644
--- a/app/src/main/java/com/example/cosmosclient/app/Cosmos.java
+++ b/app/src/main/java/com/example/cosmosclient/app/Cosmos.java
@@ -2,11 +2,15 @@
 
 import android.app.Application;
 
+import com.example.cosmosclient.entities.Group;
+
 import java.util.ArrayList;
 import java.util.List;
 
 public class Cosmos extends Application {
+    //token処理
     private List<String> token;
+    private Group curGroup=null;
 
     public Cosmos(){
         this.token = new ArrayList<String>();
@@ -20,4 +24,13 @@
         return new ArrayList<String>(token);
     }
 
+    //Group処理
+    public void setCurrentGroup(Group g){
+        curGroup = g;
+    }
+    public Group getCurentGroup(){
+        return curGroup;
+    }
+
+
 }
diff --git a/app/src/main/java/com/example/cosmosclient/entities/Group.java b/app/src/main/java/com/example/cosmosclient/entities/Group.java
new file mode 100644
index 0000000..9e728a3
--- /dev/null
+++ b/app/src/main/java/com/example/cosmosclient/entities/Group.java
@@ -0,0 +1,91 @@
+package com.example.cosmosclient.entities;
+
+import java.util.ArrayList;
+import java.util.Set;
+
+public class Group {
+    private String gId;
+    private String uri, name;
+    /*   Userどうするか
+    private ArrayList<User> members;
+    */
+    //private ArrayList<Request> requests;
+    private Set<Request> requests;
+
+    public Group(){
+
+    }
+
+    public Group(String gId, String uri, String name, String uId){
+        setgId(gId);
+        setUri(uri);
+        setName(name);
+    }
+
+    public String getgId() {
+        return gId;
+    }
+
+    private void setgId(String gId) {
+        this.gId = gId;
+    }
+
+    public String getUri() {
+        return uri;
+    }
+
+    private void setUri(String uri){
+        this.uri = uri;
+    }
+
+    public String getUriByGid(String gId){
+        return uri;
+    }
+
+    private void setName(String name){
+        this.name = name;
+    }
+
+    public String getName(){
+        return name;
+    }
+
+    public String getNameByGid(String gId){
+        return name;
+    }
+
+    public Set<Request> getRequests(){
+        return requests;
+    }
+
+    public void setRequests(Set<Request> requests){
+        this.requests = requests;
+    }
+
+    public void addRequests(Request request){
+        requests.add(request);
+    }
+
+    public ArrayList<Request> getRequestsList(){
+        ArrayList<Request> list = new ArrayList<Request>(getRequests());
+        return list;
+    }
+
+    /*メンバー*/
+    //public ArrayList<User> getMembersList(){
+    //    return null;
+    //}
+
+    //public void addMemberByUid(String uId){
+    //
+    //    members.add(user);
+    //}
+
+    //public DeleteResult deleteMember(String uid){
+    //    members.remove(members.indexOf(uid));
+    //    return null;
+    //}
+
+    /*リクエスト*/
+
+}