diff --git a/java/0978-longest-turbulent-subarray.java b/java/0978-longest-turbulent-subarray.java
new file mode 100644
index 000000000..109ac74e9
--- /dev/null
+++ b/java/0978-longest-turbulent-subarray.java
@@ -0,0 +1,31 @@
+class Solution {
+    public int maxTurbulenceSize(int[] arr) {
+        int res = 1, total = 1;
+        Boolean isHigher = null;
+
+        for (int i = 1; i < arr.length; i++) {
+            if (arr[i] > arr[i - 1]) {
+                if (isHigher != null && !isHigher) {
+                    total += 1;
+                } else {
+                    total = 2;
+                }
+                isHigher = true;
+            } else if (arr[i] < arr[i - 1]) {
+                if (isHigher != null && isHigher) {
+                    total += 1;
+                } else {
+                    total = 2;
+                }
+                isHigher = false;
+            } else {
+                total = 1;
+                isHigher = null;
+            }
+
+            res = Math.max(res, total);
+        }
+
+        return res;
+    }
+}
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