diff --git a/stack/AStack.java b/java/Stack/AStack.java
similarity index 100%
rename from stack/AStack.java
rename to java/Stack/AStack.java
diff --git a/stack/LStack.java b/java/Stack/LStack.java
similarity index 100%
rename from stack/LStack.java
rename to java/Stack/LStack.java
diff --git a/stack/Stack.java b/java/Stack/Stack.java
similarity index 100%
rename from stack/Stack.java
rename to java/Stack/Stack.java