diff --git a/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/util/MD5Util.java b/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/util/MD5Util.java
index 4ee914c4..9a88560d 100644
--- a/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/util/MD5Util.java
+++ b/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/util/MD5Util.java
@@ -8,7 +8,7 @@ public class MD5Util {
 
 	}
 
-	public static String byteArrayToHexString(byte b[]) {
+	public static String byteArrayToHexString(byte[] b) {
 		StringBuilder resultSb = new StringBuilder();
 		for (int i = 0; i < b.length; i++){
 			resultSb.append(byteToHexString(b[i]));
@@ -23,7 +23,7 @@ public class MD5Util {
 		}
 		int d1 = n / 16;
 		int d2 = n % 16;
-		return hexDigits[d1] + hexDigits[d2];
+		return HEX_DIGITS[d1] + HEX_DIGITS[d2];
 	}
 
 	public static String MD5Encode(String origin, String charsetname) {
@@ -42,7 +42,7 @@ public class MD5Util {
 		return resultString;
 	}
 
-	private static final String hexDigits[] = { "0", "1", "2", "3", "4", "5",
+	private static final String[] HEX_DIGITS = { "0", "1", "2", "3", "4", "5",
 			"6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };
 
 }