From 54ffe1ed0e8790e56f29e18c41c77320b8c1c167 Mon Sep 17 00:00:00 2001
From: Looly <loolly@gmail.com>
Date: Fri, 26 Aug 2022 16:17:05 +0800
Subject: [PATCH] add commnent

---
 .../main/java/cn/hutool/core/text/CharSequenceUtil.java    | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java b/hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java
index a267f954d..39ec1c03d 100755
--- a/hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java
@@ -623,7 +623,12 @@ public class CharSequenceUtil extends StrChecker {
 	}
 
 	/**
-	 * 检查指定字符串中是否只包含给定的字符
+	 * 检查指定字符串中是否只包含给定的字符<br>
+	 * <ul>
+	 *     <li>str 是 null，testChars 也是 null，直接返回 true</li>
+	 *     <li>str 是 null，testChars 不是 null，直接返回 true</li>
+	 *     <li>str 不是 null，testChars 是 null，直接返回 false</li>
+	 * </ul>
 	 *
 	 * @param str       字符串
 	 * @param testChars 检查的字符