diff --git a/app/src/main/java/lightcontainer/storage/JsonRepository.java b/app/src/main/java/lightcontainer/storage/JsonRepository.java
new file mode 100644
index 0000000..a002404
--- /dev/null
+++ b/app/src/main/java/lightcontainer/storage/JsonRepository.java
@@ -0,0 +1,15 @@
+package lightcontainer.storage;
+
+public class JsonRepository implements Repository {
+
+
+    @Override
+    public void save(String fileName, AppData data) {
+
+    }
+
+    @Override
+    public AppData load(String fileName) {
+        return null;
+    }
+}
diff --git a/app/src/main/java/lightcontainer/storage/Repository.java b/app/src/main/java/lightcontainer/storage/Repository.java
new file mode 100644
index 0000000..79f19fd
--- /dev/null
+++ b/app/src/main/java/lightcontainer/storage/Repository.java
@@ -0,0 +1,8 @@
+package lightcontainer.storage;
+
+public interface Repository {
+
+    void save(String fileName, AppData data);
+
+    AppData load(String fileName);
+}