diff --git a/codes/TechOS/18361562.java b/codes/TechOS/18361562.java
new file mode 100644
index 0000000000000000000000000000000000000000..a4cc45a954a653cb54dc996bb7bfc4833a3ddc48
--- /dev/null
+++ b/codes/TechOS/18361562.java
@@ -0,0 +1,14 @@
+public class BubbleSort {
+    public static void bubbleSort(int[] arr) {
+        int n = arr.length;
+        for (int i = 0; i < n - 1; i++) {
+            for (int j = 0; j < n - i - 1; j++) {
+                if (arr[j] > arr[j + 1]) {
+                    int temp = arr[j];
+                    arr[j] = arr[j + 1];
+                    arr[j + 1] = temp;
+                }
+            }
+        }
+    }
+}