diff --git a/729-my-calendar-i/my-calendar-i.java b/729-my-calendar-i/my-calendar-i.java
new file mode 100644
index 0000000..92241b1
--- /dev/null
+++ b/729-my-calendar-i/my-calendar-i.java
@@ -0,0 +1,22 @@
+class MyCalendar {
+    List<int[]> calendar;
+    public MyCalendar() {
+        calendar = new ArrayList<>();
+    }
+    
+    public boolean book(int start, int end) {
+        for(int[] iv: calendar){
+            if(iv[0] < end && start < iv[1]){
+                return false;
+            }
+        }
+        calendar.add(new int[]{start, end});
+        return true;
+    }
+}
+
+/**
+ * Your MyCalendar object will be instantiated and called as such:
+ * MyCalendar obj = new MyCalendar();
+ * boolean param_1 = obj.book(start,end);
+ */
\ No newline at end of file