diff --git a/.idea/misc.xml b/.idea/misc.xml
index 7e13a7a..5d9e04b 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -4,7 +4,7 @@
   <component name="JavaScriptSettings">
     <option name="languageLevel" value="ES6" />
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="false" project-jdk-name="12" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="false" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/src/main/java/com/example/cosmos_serversb/entities/User.java b/src/main/java/com/example/cosmos_serversb/entities/User.java
index 4cdd0e1..b1dc701 100644
--- a/src/main/java/com/example/cosmos_serversb/entities/User.java
+++ b/src/main/java/com/example/cosmos_serversb/entities/User.java
@@ -18,5 +18,4 @@
         this.iconImage=iconImage;
         this.iconUri=iconUri;
     }
-
 }
diff --git a/src/main/java/com/example/cosmos_serversb/models/Users.java b/src/main/java/com/example/cosmos_serversb/models/Users.java
index 3a06992..4450341 100644
--- a/src/main/java/com/example/cosmos_serversb/models/Users.java
+++ b/src/main/java/com/example/cosmos_serversb/models/Users.java
@@ -1,41 +1,75 @@
 package com.example.cosmos_serversb.models;
 
+import java.util.UUID;
+import javax.inject.Singleton;
+
 import com.example.cosmos_serversb.entities.*;
 
+@Singleton
 public class Users {
-    //User testUser = new User("test", "123456789", "http://test.com", "testpw", "123456789", "123456789", "http://iconuri/123456789.com");
+    private static Users theInstance = null;
 
-    public User createUser(String name, String pw, String iconImage) {
+    private Users() {
+    }
+
+    public static Users getInstance() {
+        if (theInstance == null) {
+            theInstance = new Users();
+        }
+        return theInstance;
+    }
+
+    public static User createUser(String name, String pw, String iconImage) {
         User testUser = new User("test", "123456789", "http://test.com", "testpw", null, "123456789", "http://iconuri/123456789.com");
-        testUser.token.add("123456789");
-        testUser.token.add("987654321");
+        testUser.token.add(getInstance().createToken(testUser.uId));
+        testUser.token.add(getInstance().createToken(testUser.uId));
         return testUser;
     }
 
-    public final static User getUserById(String uId) {
+    public static String createToken(String uId) {
+        //Tokenを作成しuIdと関連付けしDBに保存し作成したTokenを返す
+        String token = UUID.randomUUID().toString();
+        return token;
+    }
+
+    public static User setUser(String uId, String name, String pw, String iconImage) {
         User testUser = new User("test", "123456789", "http://test.com", "testpw", null, "123456789", "http://iconuri/123456789.com");
-        testUser.token.add("123456789");
-        testUser.token.add("987654321");
+        testUser.token.add(getInstance().createToken(testUser.uId));
+        testUser.token.add(getInstance().createToken(testUser.uId));
         return testUser;
     }
 
-    public User getUserByToken(String token) {
+    public static User getUserById(String uId) {
         User testUser = new User("test", "123456789", "http://test.com", "testpw", null, "123456789", "http://iconuri/123456789.com");
-        testUser.token.add("123456789");
-        testUser.token.add("987654321");
+        testUser.token.add(getInstance().createToken(testUser.uId));
+        testUser.token.add(getInstance().createToken(testUser.uId));
         return testUser;
     }
 
-    public DeleteResult deleteUser(String uId) {
+    public static User getUserByToken(String token) {
+        User testUser = new User("test", "123456789", "http://test.com", "testpw", null, "123456789", "http://iconuri/123456789.com");
+        testUser.token.add(getInstance().createToken(testUser.uId));
+        testUser.token.add(getInstance().createToken(testUser.uId));
+        return testUser;
+    }
+
+    public static DeleteResult deleteUser(String uId) {
         return DeleteResult.SUCCESS;
     }
 
-    public String login(String uId) {
-
-        return "123456789";//testToken
+    public static String login(String uId) {
+        return getInstance().createToken(uId);//testToken
     }
 
-    public DeleteResult logout(String token) {
+    public static DeleteResult logout(String token) {
         return DeleteResult.SUCCESS;
     }
+
+    public static boolean checkToken(String uId, String token) {
+        return true;
+    }
+
+    public static boolean checkPassword(String uId, String pw) {
+        return true;
+    }
 }
diff --git a/src/main/java/com/example/cosmos_serversb/resources/GroupsRest.java b/src/main/java/com/example/cosmos_serversb/resources/GroupsRest.java
index 5fa76ed..56e936d 100644
--- a/src/main/java/com/example/cosmos_serversb/resources/GroupsRest.java
+++ b/src/main/java/com/example/cosmos_serversb/resources/GroupsRest.java
@@ -1,17 +1,107 @@
 package com.example.cosmos_serversb.resources;
 
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import org.springframework.stereotype.Component;
 
-import javax.ws.rs.GET;
-import javax.ws.rs.Path;
+import javax.ws.rs.*;
 
 @Component
-@Path("/groups")
-public class GroupsRest {
 
+public class GroupsRest {
+    @Path("/groups")
     @GET
-    public String index() {
-        return "{1:Tiger}";
+    public String getGroupsListByUid(@QueryParam("uId") String uId, @QueryParam("token") String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
     }
 
+    @Path("/groups")
+    @POST
+    public String createGroup(@FormParam("name") String name, @FormParam("uId") String uId, @FormParam("token") String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @Path("/{gId}")
+    @GET
+    public String getGroupInfoByGid(@PathParam("gId") String gId, @QueryParam("token") String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @Path("/{gId}")
+    @DELETE
+    public String deleteGroup(@PathParam("gId") String gId, @FormParam("token") String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @Path("/{gId}/members")
+    @GET
+    public String getGroupMembersListByGid(@PathParam("gId") String gId, @QueryParam("token") String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @Path("/{gId}/members")
+    @POST
+    public String addMember(@PathParam("gId") String gId, @FormParam("uId") String uId, @FormParam("token") String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @Path("/{gId}/members")
+    @DELETE
+    public String deleteMember(@PathParam("gId") String gId, @FormParam("uId") String uId, @FormParam("token") String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @Path("/{gId}/requests")
+    @GET
+    public String getRequestsListByGid(@PathParam("gId") String gId, @QueryParam("token") String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @Path("/{gId}/requests")
+    @POST
+    public String addRequests(@PathParam("gId") String gId, @FormParam("uId") String uId, @FormParam("product") String product, @FormParam("deadline") String deadline, @FormParam("location") int location, @FormParam("token") String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @Path("{gId}/requests/{rId}")
+    @GET
+    public String getRequestsDetailByGidAndRid(@PathParam("gId") String gId, @PathParam("rId") String rId, @QueryParam("token") String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @Path("{gId}/requests/{rId}")
+    @PUT
+    public String updateRequest(@PathParam("gId") String gId, @PathParam("rId") String rId, @FormParam("uId") String uId, @FormParam("product") String product, @FormParam("deadline") String deadline, @FormParam("location") int location, @FormParam("done") boolean done, @FormParam("token") String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @Path("{gId}/requests/{rId}")
+    @DELETE
+    public String deleteRequest(@PathParam("gId") String gId, @PathParam("rId") String rId, @FormParam("token") String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
 }