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/resources/GroupsRest.java b/src/main/java/com/example/cosmos_serversb/resources/GroupsRest.java
index 5fa76ed..48668ad 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 +1,99 @@
 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 {
 
     @GET
-    public String index() {
-        return "{1:Tiger}";
+    public String getGroupsListByUid(String uId, String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
     }
 
+    @POST
+    public String createGroup(String name, String uId, String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+@Path("/{gId}")
+    @GET
+    public String getGroupInfoByGid(String gId, String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @DELETE
+    public String deleteGroup(String gId, String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+@Path("/members")
+    @GET
+    public String getGroupMembersListByGid(String gId, String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @POST
+    public String addMember(String gId, String uId, String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @DELETE
+    public String deleteMember(String gId, String uId, String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+@Path("/requests")
+    @GET
+    public String getRequestsListByGid(String gId, String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @POST
+    public String addRequests(String gId, String uId, String product, String deadline, int location, String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+@Path("/{rId}")
+    @GET
+    public String getRequestsDetailByGidAndRid(String gId, String rId, String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+    @PUT
+    public String updateRequest(String gId, String rId, String uId, String product, String deadline, int location, boolean done, String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
+
+    @DELETE
+    public String deleteRequest(String gId, String rId, String token) throws JsonProcessingException{
+        ObjectMapper mapper = new ObjectMapper();
+        String json = mapper.writeValueAsString(null);
+        return json;
+    }
 }