diff --git a/src/main/java/xyz/zhouxy/plusone/commons/util/AbstractMapWrapper.java b/src/main/java/xyz/zhouxy/plusone/commons/collection/AbstractMapWrapper.java
similarity index 97%
rename from src/main/java/xyz/zhouxy/plusone/commons/util/AbstractMapWrapper.java
rename to src/main/java/xyz/zhouxy/plusone/commons/collection/AbstractMapWrapper.java
index 31623e5..ca6f2f5 100644
--- a/src/main/java/xyz/zhouxy/plusone/commons/util/AbstractMapWrapper.java
+++ b/src/main/java/xyz/zhouxy/plusone/commons/collection/AbstractMapWrapper.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package xyz.zhouxy.plusone.commons.util;
+package xyz.zhouxy.plusone.commons.collection;
 
 import java.util.Collection;
 import java.util.Collections;
@@ -164,7 +164,7 @@ public abstract class AbstractMapWrapper<K, V, T extends AbstractMapWrapper<K, V
         return this.map.toString();
     }
 
-    protected abstract static class Builder<K, V, T extends AbstractMapWrapper<K, V, T>> {
+    public abstract static class Builder<K, V, T extends AbstractMapWrapper<K, V, T>> {
         protected final Map<K, V> map;
         protected Consumer<K> keyChecker;
         protected Consumer<V> valueChecker;
diff --git a/src/main/java/xyz/zhouxy/plusone/commons/util/MapWrapper.java b/src/main/java/xyz/zhouxy/plusone/commons/collection/MapWrapper.java
similarity index 98%
rename from src/main/java/xyz/zhouxy/plusone/commons/util/MapWrapper.java
rename to src/main/java/xyz/zhouxy/plusone/commons/collection/MapWrapper.java
index d76c57c..aa99322 100644
--- a/src/main/java/xyz/zhouxy/plusone/commons/util/MapWrapper.java
+++ b/src/main/java/xyz/zhouxy/plusone/commons/collection/MapWrapper.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package xyz.zhouxy.plusone.commons.util;
+package xyz.zhouxy.plusone.commons.collection;
 
 import java.util.Collections;
 import java.util.Comparator;
diff --git a/src/main/java/xyz/zhouxy/plusone/commons/domain/ValidatableStringRecord.java b/src/main/java/xyz/zhouxy/plusone/commons/domain/ValidatableStringRecord.java
index 6b66a6f..df041c4 100644
--- a/src/main/java/xyz/zhouxy/plusone/commons/domain/ValidatableStringRecord.java
+++ b/src/main/java/xyz/zhouxy/plusone/commons/domain/ValidatableStringRecord.java
@@ -21,6 +21,7 @@ import java.util.regex.Pattern;
 import com.fasterxml.jackson.annotation.JsonValue;
 
 import xyz.zhouxy.plusone.commons.util.Assert;
+import xyz.zhouxy.plusone.commons.util.RegexUtil;
 
 /**
  * 带校验的字符串值对象
@@ -34,7 +35,7 @@ public abstract class ValidatableStringRecord {
     protected ValidatableStringRecord(String value, Pattern pattern) {
         Assert.notNull(pattern, "The pattern must not be null.");
         Assert.isNotBlank(value, "The value must be has text.");
-        Assert.isTrue(pattern.matcher(value).matches());
+        Assert.isTrue(RegexUtil.matches(value, pattern));
         this.value = value;
     }
 
diff --git a/src/main/java/xyz/zhouxy/plusone/commons/exception/BaseException.java b/src/main/java/xyz/zhouxy/plusone/commons/exception/BaseException.java
index 1e4e930..33390ab 100644
--- a/src/main/java/xyz/zhouxy/plusone/commons/exception/BaseException.java
+++ b/src/main/java/xyz/zhouxy/plusone/commons/exception/BaseException.java
@@ -21,7 +21,7 @@ package xyz.zhouxy.plusone.commons.exception;
  *
  * @author <a href="https://gitee.com/zhouxy108">ZhouXY</a>
  */
-public abstract class BaseException extends RuntimeException implements IWithCode {
+public abstract class BaseException extends RuntimeException implements IWithIntCode {
 
     private static final long serialVersionUID = -2546365325001947203L;
 
diff --git a/src/main/java/xyz/zhouxy/plusone/commons/exception/IWithCode.java b/src/main/java/xyz/zhouxy/plusone/commons/exception/IWithCode.java
index d061c36..3deeae8 100644
--- a/src/main/java/xyz/zhouxy/plusone/commons/exception/IWithCode.java
+++ b/src/main/java/xyz/zhouxy/plusone/commons/exception/IWithCode.java
@@ -16,14 +16,16 @@
 
 package xyz.zhouxy.plusone.commons.exception;
 
+import javax.annotation.Nonnull;
+
 /**
  * 规定实现类带有 {@code getCode} 方法。
  * 用于像自定义异常等需要带有 {@code code} 字段的类，
  * 方便其它地方的程序判断该类的是否实现了此接口，以此获取其实例的 {@code code} 字段的值。
  *
  * @author <a href="https://gitee.com/zhouxy108">ZhouXY</a>
- * @see BaseException
  */
-public interface IWithCode {
-    int getCode();
+public interface IWithCode<T> {
+    @Nonnull
+    T getCode();
 }
diff --git a/src/main/java/xyz/zhouxy/plusone/commons/exception/IWithIntCode.java b/src/main/java/xyz/zhouxy/plusone/commons/exception/IWithIntCode.java
new file mode 100644
index 0000000..a2258f8
--- /dev/null
+++ b/src/main/java/xyz/zhouxy/plusone/commons/exception/IWithIntCode.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package xyz.zhouxy.plusone.commons.exception;
+
+/**
+ * 规定实现类带有 {@code getCode} 方法。
+ * 用于像自定义异常等需要带有 {@code code} 字段的类，
+ * 方便其它地方的程序判断该类的是否实现了此接口，以此获取其实例的 {@code code} 字段的值。
+ *
+ * @author <a href="https://gitee.com/zhouxy108">ZhouXY</a>
+ * @see BaseException
+ */
+public interface IWithIntCode {
+    int getCode();
+}
diff --git a/src/main/java/xyz/zhouxy/plusone/commons/jdbc/DbRecord.java b/src/main/java/xyz/zhouxy/plusone/commons/jdbc/DbRecord.java
index c1983bc..472c00d 100644
--- a/src/main/java/xyz/zhouxy/plusone/commons/jdbc/DbRecord.java
+++ b/src/main/java/xyz/zhouxy/plusone/commons/jdbc/DbRecord.java
@@ -31,7 +31,7 @@ import java.util.Set;
 
 import com.google.common.annotations.Beta;
 
-import xyz.zhouxy.plusone.commons.util.AbstractMapWrapper;
+import xyz.zhouxy.plusone.commons.collection.AbstractMapWrapper;
 import xyz.zhouxy.plusone.commons.util.Assert;
 import xyz.zhouxy.plusone.commons.util.OptionalUtil;
 
diff --git a/src/main/java/xyz/zhouxy/plusone/commons/util/DateTimeUtil.java b/src/main/java/xyz/zhouxy/plusone/commons/util/DateTimeUtil.java
index bb78567..f808353 100644
--- a/src/main/java/xyz/zhouxy/plusone/commons/util/DateTimeUtil.java
+++ b/src/main/java/xyz/zhouxy/plusone/commons/util/DateTimeUtil.java
@@ -11,8 +11,12 @@ import java.util.Calendar;
 import java.util.Date;
 import java.util.TimeZone;
 
+import org.joda.time.DateTimeZone;
+
 import xyz.zhouxy.plusone.commons.collection.SafeConcurrentHashMap;
 
+import xyz.zhouxy.plusone.commons.collection.MapWrapper;
+
 public class DateTimeUtil {
 
     private static final MapWrapper<String, DateTimeFormatter> DATE_TIME_FORMATTER_CACHE = MapWrapper
@@ -114,7 +118,7 @@ public class DateTimeUtil {
      * </p>
      * 
      * @param timeMillis 时间戳
-     * @param zone     时区
+     * @param zone       时区
      * @return 带时区信息的地区时间
      */
     public static ZonedDateTime toZonedDateTime(long timeMillis, ZoneId zone) {
@@ -179,7 +183,7 @@ public class DateTimeUtil {
      * 获取时间戳在指定时区的地区时间。
      * 
      * @param timeMillis 时间戳
-     * @param zone     时区
+     * @param zone       时区
      * @return 地区时间
      */
     public static LocalDateTime toLocalDateTime(long timeMillis, ZoneId zone) {
@@ -221,6 +225,7 @@ public class DateTimeUtil {
     }
 
     // ====================
+
     // toJodaInstant
 
     public static org.joda.time.Instant toJodaInstant(java.time.Instant instant) {
@@ -261,14 +266,14 @@ public class DateTimeUtil {
     public static org.joda.time.DateTime toJodaDateTime(
             java.time.LocalDateTime localDateTime,
             java.time.ZoneId zone) {
-        org.joda.time.DateTimeZone dateTimeZone = org.joda.time.DateTimeZone.forID(zone.getId());
+        org.joda.time.DateTimeZone dateTimeZone = toJodaTime(zone);
         return toJodaInstant(ZonedDateTime.of(localDateTime, zone).toInstant()).toDateTime(dateTimeZone);
     }
 
     public static org.joda.time.DateTime toJodaDateTime(
             java.time.Instant instant,
             java.time.ZoneId zone) {
-        org.joda.time.DateTimeZone dateTimeZone = org.joda.time.DateTimeZone.forID(zone.getId());
+        org.joda.time.DateTimeZone dateTimeZone = toJodaTime(zone);
         return toJodaInstant(instant).toDateTime(dateTimeZone);
     }
 
@@ -282,31 +287,39 @@ public class DateTimeUtil {
     public static java.time.ZonedDateTime toZonedDateTime(
             org.joda.time.LocalDateTime localDateTime,
             org.joda.time.DateTimeZone dateTimeZone) {
-                java.time.ZoneId zone = dateTimeZone.toTimeZone().toZoneId();
+        java.time.ZoneId zone = toJavaZone(dateTimeZone);
         return toJavaInstant(localDateTime, dateTimeZone).atZone(zone);
     }
 
     public static java.time.ZonedDateTime toZonedDateTime(
             org.joda.time.Instant instant,
             org.joda.time.DateTimeZone dateTimeZone) {
-        java.time.ZoneId zone = dateTimeZone.toTimeZone().toZoneId();
+        java.time.ZoneId zone = toJavaZone(dateTimeZone);
         return toJavaInstant(instant).atZone(zone);
     }
 
     // toJodaLocalDateTime
 
     public static org.joda.time.LocalDateTime toJodaLocalDateTime(java.time.LocalDateTime localDateTime) {
-        return toJodaInstant(localDateTime, ZoneId.systemDefault())
-                .toDateTime(org.joda.time.DateTimeZone.getDefault())
-                .toLocalDateTime();
+        java.time.ZoneId javaZone = java.time.ZoneId.systemDefault();
+        org.joda.time.DateTimeZone jodaZone = toJodaTime(javaZone);
+        return toJodaInstant(localDateTime, javaZone).toDateTime(jodaZone).toLocalDateTime();
     }
 
     // toJavaLocalDateTime
 
     public static java.time.LocalDateTime toJavaLocalDateTime(org.joda.time.LocalDateTime localDateTime) {
-        return toJavaInstant(localDateTime, org.joda.time.DateTimeZone.getDefault())
-                .atZone(java.time.ZoneId.systemDefault())
-                .toLocalDateTime();
+        org.joda.time.DateTimeZone jodaZone = org.joda.time.DateTimeZone.getDefault();
+        java.time.ZoneId javaZone = toJavaZone(jodaZone);
+        return toJavaInstant(localDateTime, jodaZone).atZone(javaZone).toLocalDateTime();
+    }
+
+    public static java.time.ZoneId toJavaZone(org.joda.time.DateTimeZone jodaZone) {
+        return jodaZone.toTimeZone().toZoneId();
+    }
+
+    public static DateTimeZone toJodaTime(java.time.ZoneId zone) {
+        return org.joda.time.DateTimeZone.forID(zone.getId());
     }
 
     private DateTimeUtil() {