diff --git a/src/main/java/ir/chaarfasl/back/api/core/controller/.gitkeep b/src/main/java/ir/chaarfasl/back/api/core/controller/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/main/java/ir/chaarfasl/back/api/core/dto/.gitkeep b/src/main/java/ir/chaarfasl/back/api/core/dto/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/main/java/ir/chaarfasl/back/api/core/exceptions/.gitkeep b/src/main/java/ir/chaarfasl/back/api/core/exceptions/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/main/java/ir/chaarfasl/back/api/core/repository/.gitkeep b/src/main/java/ir/chaarfasl/back/api/core/repository/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/main/java/ir/chaarfasl/back/api/core/service/.gitkeep b/src/main/java/ir/chaarfasl/back/api/core/service/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/main/java/ir/chaarfasl/back/api/core/util/Constants.java b/src/main/java/ir/chaarfasl/back/api/core/util/Constants.java
new file mode 100644
index 0000000..2121fc1
--- /dev/null
+++ b/src/main/java/ir/chaarfasl/back/api/core/util/Constants.java
@@ -0,0 +1,4 @@
+package ir.chaarfasl.back.api.core.util;
+
+public class Constants {
+}