diff --git a/tooltips/src/main/java/com/tomergoldst/tooltipshm/TextUtils.java b/tooltips/src/main/java/com/tomergoldst/tooltipshm/TextUtils.java
index 7c1b6eae335dffc0b9b3f0481ee1a65a60297175..d52147f7549953de649e94b91be398d60650afae 100644
--- a/tooltips/src/main/java/com/tomergoldst/tooltipshm/TextUtils.java
+++ b/tooltips/src/main/java/com/tomergoldst/tooltipshm/TextUtils.java
@@ -1,6 +1,12 @@
 package com.tomergoldst.tooltipshm;
 
 public class TextUtils {
+    /**
+     * 判空
+     *
+     * @param str the parms
+     * @return str
+     */
     public static boolean isEmpty(CharSequence str) {
         return str == null || str.length() == 0;
     }