diff --git a/plusone-basic/plusone-basic-infrastructure/src/main/java/xyz/zhouxy/plusone/jdbc/PlusoneJdbcDaoSupport.java b/plusone-basic/plusone-basic-infrastructure/src/main/java/xyz/zhouxy/plusone/jdbc/PlusoneJdbcDaoSupport.java
index 4932d4e..b5017e4 100644
--- a/plusone-basic/plusone-basic-infrastructure/src/main/java/xyz/zhouxy/plusone/jdbc/PlusoneJdbcDaoSupport.java
+++ b/plusone-basic/plusone-basic-infrastructure/src/main/java/xyz/zhouxy/plusone/jdbc/PlusoneJdbcDaoSupport.java
@@ -103,49 +103,49 @@ public abstract class PlusoneJdbcDaoSupport {
         return Numbers.sum(i);
     }
 
-    protected static final <T> void assertResultEquals(T result, T expectedValue) {
+    protected static <T> void assertResultEquals(T result, T expectedValue) {
         if (!Objects.equals(result, expectedValue)) {
             throw new DataOperationResultException();
         }
     }
 
-    protected static final <T> void assertResultEquals(T result, T expectedValue, Function<T, String> errMsg) {
+    protected static <T> void assertResultEquals(T result, T expectedValue, Function<T, String> errMsg) {
         if (!Objects.equals(result, expectedValue)) {
             throw new DataOperationResultException(errMsg.apply(result));
         }
     }
 
-    protected static final <T> void assertResultEquals(T result, T expectedValue, String msgTemplate, Object... args) {
+    protected static <T> void assertResultEquals(T result, T expectedValue, String msgTemplate, Object... args) {
         if (!Objects.equals(result, expectedValue)) {
             throw new DataOperationResultException(String.format(msgTemplate, args));
         }
     }
 
-    protected static final <T, E extends Throwable> void assertResultEqualsOrThrow(T result, T expectedValue,
+    protected static <T, E extends Throwable> void assertResultEqualsOrThrow(T result, T expectedValue,
             Function<T, E> e) throws E {
         if (!Objects.equals(result, expectedValue)) {
             throw e.apply(result);
         }
     }
 
-    protected static final void assertUpdateOneRow(int result) {
+    protected static void assertUpdateOneRow(int result) {
         assertResultEquals(result, 1);
     }
 
-    protected static final void assertUpdateOneRow(int result, Function<Integer, String> errMsg) {
+    protected static void assertUpdateOneRow(int result, Function<Integer, String> errMsg) {
         assertResultEquals(result, 1, errMsg);
     }
 
-    protected static final void assertUpdateOneRow(int result, String msgTemplate, Object... args) {
+    protected static void assertUpdateOneRow(int result, String msgTemplate, Object... args) {
         assertResultEquals(result, 1, msgTemplate, args);
     }
 
-    protected static final <E extends Throwable> void assertUpdateOneRowOrThrow(int result, Function<Integer, E> e)
+    protected static <E extends Throwable> void assertUpdateOneRowOrThrow(int result, Function<Integer, E> e)
             throws E {
         assertResultEqualsOrThrow(result, 1, e);
     }
 
-    protected static final <T> SqlParameterSource[] buildSqlParameterSourceArray(
+    protected static <T> SqlParameterSource[] buildSqlParameterSourceArray(
             T[] c,
             @Nonnull Function<T, SqlParameterSource> paramSourceBuilder) {
         if (c == null || c.length == 0) {
@@ -154,7 +154,7 @@ public abstract class PlusoneJdbcDaoSupport {
         return buildSqlParameterSourceArray(Arrays.stream(c), paramSourceBuilder);
     }
 
-    protected static final <T> SqlParameterSource[] buildSqlParameterSourceArray(
+    protected static <T> SqlParameterSource[] buildSqlParameterSourceArray(
             Collection<T> c,
             @Nonnull Function<T, SqlParameterSource> paramSourceBuilder) {
         if (CollectionUtils.isEmpty(c)) {
@@ -163,7 +163,7 @@ public abstract class PlusoneJdbcDaoSupport {
         return buildSqlParameterSourceArray(c.stream(), paramSourceBuilder);
     }
 
-    protected static final <T> SqlParameterSource[] buildSqlParameterSourceArray(
+    protected static <T> SqlParameterSource[] buildSqlParameterSourceArray(
             Stream<T> stream,
             @Nonnull Function<T, SqlParameterSource> paramSourceBuilder) {
         Objects.requireNonNull(stream);