diff --git a/subjects/java/checkpoints/circular-linkedlist/ExerciseRunner.java b/subjects/java/checkpoints/circular-linked-list/ExerciseRunner.java
similarity index 100%
rename from subjects/java/checkpoints/circular-linkedlist/ExerciseRunner.java
rename to subjects/java/checkpoints/circular-linked-list/ExerciseRunner.java
diff --git a/subjects/java/checkpoints/circular-linkedlist/LinkedList.java b/subjects/java/checkpoints/circular-linked-list/LinkedList.java
similarity index 100%
rename from subjects/java/checkpoints/circular-linkedlist/LinkedList.java
rename to subjects/java/checkpoints/circular-linked-list/LinkedList.java
diff --git a/subjects/java/checkpoints/circular-linkedlist/README.md b/subjects/java/checkpoints/circular-linked-list/README.md
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rename from subjects/java/checkpoints/circular-linkedlist/README.md
rename to subjects/java/checkpoints/circular-linked-list/README.md
diff --git a/subjects/java/checkpoints/double-linkedlist/ExerciseRunner.java b/subjects/java/checkpoints/double-linked-list/ExerciseRunner.java
similarity index 100%
rename from subjects/java/checkpoints/double-linkedlist/ExerciseRunner.java
rename to subjects/java/checkpoints/double-linked-list/ExerciseRunner.java
diff --git a/subjects/java/checkpoints/double-linkedlist/LinkedList.java b/subjects/java/checkpoints/double-linked-list/LinkedList.java
similarity index 100%
rename from subjects/java/checkpoints/double-linkedlist/LinkedList.java
rename to subjects/java/checkpoints/double-linked-list/LinkedList.java
diff --git a/subjects/java/checkpoints/double-linkedlist/README.md b/subjects/java/checkpoints/double-linked-list/README.md
similarity index 100%
rename from subjects/java/checkpoints/double-linkedlist/README.md
rename to subjects/java/checkpoints/double-linked-list/README.md
diff --git a/subjects/java/checkpoints/single-linkedlist/ExerciseRunner.java b/subjects/java/checkpoints/single-linked-list/ExerciseRunner.java
similarity index 100%
rename from subjects/java/checkpoints/single-linkedlist/ExerciseRunner.java
rename to subjects/java/checkpoints/single-linked-list/ExerciseRunner.java
diff --git a/subjects/java/checkpoints/single-linkedlist/LinkedList.java b/subjects/java/checkpoints/single-linked-list/LinkedList.java
similarity index 100%
rename from subjects/java/checkpoints/single-linkedlist/LinkedList.java
rename to subjects/java/checkpoints/single-linked-list/LinkedList.java
diff --git a/subjects/java/checkpoints/single-linkedlist/README.md b/subjects/java/checkpoints/single-linked-list/README.md
similarity index 100%
rename from subjects/java/checkpoints/single-linkedlist/README.md
rename to subjects/java/checkpoints/single-linked-list/README.md