diff --git a/hutool-core/src/main/java/cn/hutool/core/util/DesensitizedUtil.java b/hutool-core/src/main/java/cn/hutool/core/util/DesensitizedUtil.java
index 934048936..a8030740b 100644
--- a/hutool-core/src/main/java/cn/hutool/core/util/DesensitizedUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/util/DesensitizedUtil.java
@@ -309,10 +309,12 @@ public class DesensitizedUtil {
 	/**
 	 * 【银行卡号脱敏】由于银行卡号长度不定，所以只展示前4位，后面的位数根据卡号决定展示1-4位
 	 *  例如：
-	 *  1. "1234 2222 3333 4444 6789 9" ==》"1234 **** **** **** **** 9"
-	 * 	2. "1234 2222 3333 4444 6789 91" ==》"1234 **** **** **** **** 91"
-	 * 	3. "1234 2222 3333 4444 678" ==> "1234 **** **** **** 678"
-	 * 	4. "1234 2222 3333 4444 6789" ==》 "1234 **** **** **** 6789"
+	 *  <pre>{@code
+	 *      1. "1234 2222 3333 4444 6789 9"    ->   "1234 **** **** **** **** 9"
+	 *      2. "1234 2222 3333 4444 6789 91"   ->   "1234 **** **** **** **** 91"
+	 *      3. "1234 2222 3333 4444 678"       ->    "1234 **** **** **** 678"
+	 *      4. "1234 2222 3333 4444 6789"      ->    "1234 **** **** **** 6789"
+	 *  }</pre>
 	 *
 	 * @param bankCardNo 银行卡号
 	 * @return 脱敏之后的银行卡号
diff --git a/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java b/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
index 4621da6d4..2ccd49633 100755
--- a/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
@@ -495,7 +495,7 @@ public class StrUtil extends CharSequenceUtil implements StrPool {
 	 * @param maxBytes   最大字节数
 	 * @param factor     速算因子，取该编码下单个字符的最大可能字节数
 	 * @param appendDots 截断后是否追加省略号(...)
-	 * @return
+	 * @return 截断后的字符串
 	 */
 	public static String truncateByByteLength(String str, Charset charset, int maxBytes, int factor,
 			boolean appendDots) {