Checkpoint kinda workls. Ill take a nap and go bacjk to work

buisnesslogic/src/main/java/com/plannaplan/services/GroupService.java

@@ -1,6 +1,7 @@
 package com.plannaplan.services;
 
 import java.util.List;
+import java.util.Optional;
 
 import com.plannaplan.entities.Groups;
 import com.plannaplan.repositories.GroupRepository;
@@ -28,11 +29,15 @@ public class GroupService {
         this.repo.save(group);
     }
 
-    public void delete(Groups groups){
+    public void delete(Groups groups) {
         this.repo.delete(groups);
     }
 
-    public int getGroupsAmmount(){
-        return (int)this.repo.count();
+    public int getGroupsAmmount() {
+        return (int) this.repo.count();
+    }
+
+    public Optional<Groups> getGroupById(Long id) {
+        return this.repo.findById(id);
     }
 }