diff --git a/sharding-core/src/test/java/io/shardingsphere/core/AllTests.java b/sharding-core/src/test/java/io/shardingsphere/core/AllTests.java
index aef122d001746..09afb23ad2356 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/AllTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/AllTests.java
@@ -46,5 +46,5 @@
         AllHintTests.class, 
         AllYamlTests.class
     })
-public class AllTests {
+public final class AllTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/api/AllApiTests.java b/sharding-core/src/test/java/io/shardingsphere/core/api/AllApiTests.java
index 207c5272ed9ef..2fdd3e97ceab9 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/api/AllApiTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/api/AllApiTests.java
@@ -34,5 +34,5 @@
         RandomMasterSlaveLoadBalanceAlgorithmTest.class, 
         HintManagerTest.class
     })
-public class AllApiTests {
+public final class AllApiTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/constant/AllConstantsTests.java b/sharding-core/src/test/java/io/shardingsphere/core/constant/AllConstantsTests.java
index 5ed4ac0c68980..62223d688932e 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/constant/AllConstantsTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/constant/AllConstantsTests.java
@@ -26,5 +26,5 @@
         ShardingPropertiesConstantTest.class,
         ShardingPropertiesTest.class
     })
-public class AllConstantsTests {
+public final class AllConstantsTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/hint/AllHintTests.java b/sharding-core/src/test/java/io/shardingsphere/core/hint/AllHintTests.java
index 26a6f9e885bfb..043b2dc4e4827 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/hint/AllHintTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/hint/AllHintTests.java
@@ -22,5 +22,5 @@
 
 @RunWith(Suite.class)
 @Suite.SuiteClasses(HintManagerHolderTest.class)
-public class AllHintTests {
+public final class AllHintTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/keygen/AllKeygenTests.java b/sharding-core/src/test/java/io/shardingsphere/core/keygen/AllKeygenTests.java
index 9646615f7f259..9469fae09217b 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/keygen/AllKeygenTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/keygen/AllKeygenTests.java
@@ -25,5 +25,5 @@
         DefaultKeyGeneratorTest.class, 
         KeyGeneratorFactoryTest.class
     })
-public class AllKeygenTests {
+public final class AllKeygenTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/merger/AllMergerTests.java b/sharding-core/src/test/java/io/shardingsphere/core/merger/AllMergerTests.java
index 8a39f0f08effa..6363db9d401c3 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/merger/AllMergerTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/merger/AllMergerTests.java
@@ -68,5 +68,5 @@
         ShowTablesMergedResultTest.class,
         MergeEngineFactoryTest.class
     })
-public class AllMergerTests {
+public final class AllMergerTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/merger/dql/groupby/aggregation/AllAggregationTests.java b/sharding-core/src/test/java/io/shardingsphere/core/merger/dql/groupby/aggregation/AllAggregationTests.java
index 64735b0f888dc..c54076dd7c8d7 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/merger/dql/groupby/aggregation/AllAggregationTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/merger/dql/groupby/aggregation/AllAggregationTests.java
@@ -27,5 +27,5 @@
         AccumulationAggregationUnitTest.class, 
         AverageAggregationUnitTest.class
     })
-public class AllAggregationTests {
+public final class AllAggregationTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/metadata/AllMetaDataTests.java b/sharding-core/src/test/java/io/shardingsphere/core/metadata/AllMetaDataTests.java
index 7b93141885c92..a5dc7d0435774 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/metadata/AllMetaDataTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/metadata/AllMetaDataTests.java
@@ -37,5 +37,5 @@
         DataSourceMetaDataFactoryTest.class,
         ShardingDataSourceMetaDataTest.class
     })
-public class AllMetaDataTests {
+public final class AllMetaDataTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/optimizer/AllOptimizerTests.java b/sharding-core/src/test/java/io/shardingsphere/core/optimizer/AllOptimizerTests.java
index f1028e9331c61..add2f259e4bee 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/optimizer/AllOptimizerTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/optimizer/AllOptimizerTests.java
@@ -25,5 +25,5 @@
         InsertOptimizeEngineTest.class, 
         QueryOptimizeEngineTest.class
     })
-public class AllOptimizerTests {
+public final class AllOptimizerTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/parsing/AllParsingTests.java b/sharding-core/src/test/java/io/shardingsphere/core/parsing/AllParsingTests.java
index 7d699e017d860..1aef878b517dd 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/parsing/AllParsingTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/parsing/AllParsingTests.java
@@ -36,5 +36,5 @@
         DerivedColumnTest.class, 
         AllParsingIntegrateTests.class
     })
-public class AllParsingTests {
+public final class AllParsingTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/parsing/integrate/AllParsingIntegrateTests.java b/sharding-core/src/test/java/io/shardingsphere/core/parsing/integrate/AllParsingIntegrateTests.java
index 7008dabba4cad..ab777b782f48c 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/parsing/integrate/AllParsingIntegrateTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/parsing/integrate/AllParsingIntegrateTests.java
@@ -27,5 +27,5 @@
         IntegrateSupportedSQLParsingTest.class,
         IntegrateUnsupportedSQLParsingTest.class
     })
-public class AllParsingIntegrateTests {
+public final class AllParsingIntegrateTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/parsing/lexer/AllLexerTests.java b/sharding-core/src/test/java/io/shardingsphere/core/parsing/lexer/AllLexerTests.java
index 31d8330b9f397..b9bb2b9e48002 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/parsing/lexer/AllLexerTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/parsing/lexer/AllLexerTests.java
@@ -36,5 +36,5 @@
         SQLServerLexerTest.class,
         PostgreSQLLexerTest.class
     })
-public class AllLexerTests {
+public final class AllLexerTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/parsing/parser/sql/AllSQLTests.java b/sharding-core/src/test/java/io/shardingsphere/core/parsing/parser/sql/AllSQLTests.java
index ccdbfa51081df..7cc2abcb5b110 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/parsing/parser/sql/AllSQLTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/parsing/parser/sql/AllSQLTests.java
@@ -35,5 +35,5 @@
         TCLStatementTest.class, 
         DALStatementTest.class
     })
-public class AllSQLTests {
+public final class AllSQLTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/parsing/parser/sql/AllStatementParserTests.java b/sharding-core/src/test/java/io/shardingsphere/core/parsing/parser/sql/AllStatementParserTests.java
index 6c8e08079f0b1..b170d4a5de66b 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/parsing/parser/sql/AllStatementParserTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/parsing/parser/sql/AllStatementParserTests.java
@@ -27,5 +27,5 @@
         UpdateStatementParserTest.class,
         DeleteStatementParserTest.class
     })
-public class AllStatementParserTests {
+public final class AllStatementParserTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/rewrite/AllRewriteTests.java b/sharding-core/src/test/java/io/shardingsphere/core/rewrite/AllRewriteTests.java
index 462ec70c67b0a..c4ed871881185 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/rewrite/AllRewriteTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/rewrite/AllRewriteTests.java
@@ -26,5 +26,5 @@
         SQLBuilderTest.class, 
         SQLRewriteEngineTest.class
     })
-public class AllRewriteTests {
+public final class AllRewriteTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/routing/AllRoutingTests.java b/sharding-core/src/test/java/io/shardingsphere/core/routing/AllRoutingTests.java
index 582dbe40b62d0..3b4eb24ab8dbe 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/routing/AllRoutingTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/routing/AllRoutingTests.java
@@ -26,5 +26,5 @@
         DatabaseTest.class,
         DatabaseHintSQLRouterTest.class
 })
-public class AllRoutingTests {
+public final class AllRoutingTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/rule/AllRuleTests.java b/sharding-core/src/test/java/io/shardingsphere/core/rule/AllRuleTests.java
index 996db729ed204..de9aaf417a2ae 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/rule/AllRuleTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/rule/AllRuleTests.java
@@ -29,5 +29,5 @@
         BindingTableRuleTest.class,
         MasterSlaveRuleTest.class
     })
-public class AllRuleTests {
+public final class AllRuleTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/util/AllUtilTests.java b/sharding-core/src/test/java/io/shardingsphere/core/util/AllUtilTests.java
index 673260ef66d64..36d01b4c1a8c6 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/util/AllUtilTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/util/AllUtilTests.java
@@ -27,5 +27,5 @@
         InlineExpressionParserTest.class,
         SQLUtilTest.class
     })
-public class AllUtilTests {
+public final class AllUtilTests {
 }
diff --git a/sharding-core/src/test/java/io/shardingsphere/core/yaml/AllYamlTests.java b/sharding-core/src/test/java/io/shardingsphere/core/yaml/AllYamlTests.java
index cdaa848040a12..1f9f238aa9b96 100644
--- a/sharding-core/src/test/java/io/shardingsphere/core/yaml/AllYamlTests.java
+++ b/sharding-core/src/test/java/io/shardingsphere/core/yaml/AllYamlTests.java
@@ -36,5 +36,5 @@
         YamlMasterSlaveConfigurationTest.class, 
         YamlMasterSlaveRuleConfigurationTest.class
 })
-public class AllYamlTests {
+public final class AllYamlTests {
 }
diff --git a/sharding-jdbc-orchestration-spring/sharding-jdbc-orchestration-spring-boot-starter/src/test/java/io/shardingsphere/jdbc/spring/boot/AllTests.java b/sharding-jdbc-orchestration-spring/sharding-jdbc-orchestration-spring-boot-starter/src/test/java/io/shardingsphere/jdbc/spring/boot/AllTests.java
index 987f6c5f190af..36bf5b3bbe5db 100644
--- a/sharding-jdbc-orchestration-spring/sharding-jdbc-orchestration-spring-boot-starter/src/test/java/io/shardingsphere/jdbc/spring/boot/AllTests.java
+++ b/sharding-jdbc-orchestration-spring/sharding-jdbc-orchestration-spring-boot-starter/src/test/java/io/shardingsphere/jdbc/spring/boot/AllTests.java
@@ -28,5 +28,5 @@
         OrchestrationSpringBootMasterSlaveTest.class,
         OrchestrationSpringBootShardingTest.class 
     })
-public class AllTests {
+public final class AllTests {
 }
diff --git a/sharding-jdbc-orchestration-spring/sharding-jdbc-orchestration-spring-namespace/src/test/java/io/shardingsphere/jdbc/orchestration/spring/AllTests.java b/sharding-jdbc-orchestration-spring/sharding-jdbc-orchestration-spring-namespace/src/test/java/io/shardingsphere/jdbc/orchestration/spring/AllTests.java
index 84b208f8e53fd..4dc103e791370 100644
--- a/sharding-jdbc-orchestration-spring/sharding-jdbc-orchestration-spring-namespace/src/test/java/io/shardingsphere/jdbc/orchestration/spring/AllTests.java
+++ b/sharding-jdbc-orchestration-spring/sharding-jdbc-orchestration-spring-namespace/src/test/java/io/shardingsphere/jdbc/orchestration/spring/AllTests.java
@@ -27,5 +27,5 @@
         OrchestrationShardingNamespaceTest.class,
         OrchestrationShardingMasterSlaveNamespaceTest.class
     })
-public class AllTests {
+public final class AllTests {
 }
diff --git a/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/AllTests.java b/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/AllTests.java
index 32d3333885458..b4d7371d9be1b 100644
--- a/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/AllTests.java
+++ b/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/AllTests.java
@@ -28,5 +28,5 @@
         AllYamlTests.class,
         AllInternalTests.class
     })
-public class AllTests {
+public final class AllTests {
 }
diff --git a/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/internal/AllInternalTests.java b/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/internal/AllInternalTests.java
index 9ab08b24299f0..ebdff181976b8 100644
--- a/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/internal/AllInternalTests.java
+++ b/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/internal/AllInternalTests.java
@@ -23,5 +23,5 @@
 
 @RunWith(Suite.class)
 @Suite.SuiteClasses(AllJdbcTests.class)
-public class AllInternalTests {
+public final class AllInternalTests {
 }
diff --git a/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/internal/jdbc/AllJdbcTests.java b/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/internal/jdbc/AllJdbcTests.java
index cdfc59ecfc0bf..7b4820cbaa0d9 100644
--- a/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/internal/jdbc/AllJdbcTests.java
+++ b/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/internal/jdbc/AllJdbcTests.java
@@ -29,5 +29,5 @@
         CircuitBreakerDataSourceTest.class,
         CircuitBreakerDatabaseMetaDataTest.class
     })
-public class AllJdbcTests {
+public final class AllJdbcTests {
 }
diff --git a/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/yaml/AllYamlTests.java b/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/yaml/AllYamlTests.java
index 92e7243c96c0c..23e9746489628 100644
--- a/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/yaml/AllYamlTests.java
+++ b/sharding-jdbc-orchestration/src/test/java/io/shardingsphere/jdbc/orchestration/yaml/AllYamlTests.java
@@ -29,5 +29,5 @@
         YamlOrchestrationMasterSlaveIntegrateTest.class,
         YamlOrchestrationShardingWithMasterSlaveIntegrateTest.class
     })
-public class AllYamlTests {
+public final class AllYamlTests {
 }
diff --git a/sharding-jdbc-plugin/src/test/java/io/shardingsphere/plugin/keygen/AllTests.java b/sharding-jdbc-plugin/src/test/java/io/shardingsphere/plugin/keygen/AllTests.java
index bd79ab87971fe..da06a5cf84b7d 100644
--- a/sharding-jdbc-plugin/src/test/java/io/shardingsphere/plugin/keygen/AllTests.java
+++ b/sharding-jdbc-plugin/src/test/java/io/shardingsphere/plugin/keygen/AllTests.java
@@ -25,5 +25,5 @@
         HostNameKeyGeneratorTest.class,
         IPKeyGeneratorTest.class
     })
-public class AllTests {
+public final class AllTests {
 }
diff --git a/sharding-jdbc-spring/sharding-jdbc-spring-boot-starter/src/test/java/io/shardingsphere/jdbc/spring/boot/AllTests.java b/sharding-jdbc-spring/sharding-jdbc-spring-boot-starter/src/test/java/io/shardingsphere/jdbc/spring/boot/AllTests.java
index 05a5e83f31447..c62fba9e54b17 100644
--- a/sharding-jdbc-spring/sharding-jdbc-spring-boot-starter/src/test/java/io/shardingsphere/jdbc/spring/boot/AllTests.java
+++ b/sharding-jdbc-spring/sharding-jdbc-spring-boot-starter/src/test/java/io/shardingsphere/jdbc/spring/boot/AllTests.java
@@ -28,5 +28,5 @@
         SpringBootMasterSlaveTest.class,
         SpringBootShardingTest.class 
     })
-public class AllTests {
+public final class AllTests {
 }
diff --git a/sharding-jdbc-spring/sharding-jdbc-spring-namespace/src/test/java/io/shardingsphere/jdbc/spring/AllTests.java b/sharding-jdbc-spring/sharding-jdbc-spring-namespace/src/test/java/io/shardingsphere/jdbc/spring/AllTests.java
index 0849507daa87e..4ed6f7f1b141d 100644
--- a/sharding-jdbc-spring/sharding-jdbc-spring-namespace/src/test/java/io/shardingsphere/jdbc/spring/AllTests.java
+++ b/sharding-jdbc-spring/sharding-jdbc-spring-namespace/src/test/java/io/shardingsphere/jdbc/spring/AllTests.java
@@ -44,5 +44,5 @@
         MasterSlaveNamespaceTest.class,
         ShardingNamespaceTest.class
     })
-public class AllTests {
+public final class AllTests {
 }
diff --git a/sharding-jdbc-transaction-parent/sharding-jdbc-transaction-storage/src/test/java/io/shardingsphere/transaction/AllTests.java b/sharding-jdbc-transaction-parent/sharding-jdbc-transaction-storage/src/test/java/io/shardingsphere/transaction/AllTests.java
index 2552552600cfa..dc08fccb3d456 100644
--- a/sharding-jdbc-transaction-parent/sharding-jdbc-transaction-storage/src/test/java/io/shardingsphere/transaction/AllTests.java
+++ b/sharding-jdbc-transaction-parent/sharding-jdbc-transaction-storage/src/test/java/io/shardingsphere/transaction/AllTests.java
@@ -28,5 +28,5 @@
         AllStorageTest.class,
         AllIntegrateTests.class
     })
-public class AllTests {
+public final class AllTests {
 }
diff --git a/sharding-jdbc-transaction-parent/sharding-jdbc-transaction-storage/src/test/java/io/shardingsphere/transaction/integrate/AllIntegrateTests.java b/sharding-jdbc-transaction-parent/sharding-jdbc-transaction-storage/src/test/java/io/shardingsphere/transaction/integrate/AllIntegrateTests.java
index 52de21a92b86e..43d6f438bbdb6 100644
--- a/sharding-jdbc-transaction-parent/sharding-jdbc-transaction-storage/src/test/java/io/shardingsphere/transaction/integrate/AllIntegrateTests.java
+++ b/sharding-jdbc-transaction-parent/sharding-jdbc-transaction-storage/src/test/java/io/shardingsphere/transaction/integrate/AllIntegrateTests.java
@@ -28,5 +28,5 @@
     MemoryTransactionLogStorageOperationsTest.class,
     RdbTransactionLogStorageOperationsTest.class
     })
-public class AllIntegrateTests {
+public final class AllIntegrateTests {
 }
diff --git a/sharding-jdbc-transaction-parent/sharding-jdbc-transaction-storage/src/test/java/io/shardingsphere/transaction/storage/AllStorageTest.java b/sharding-jdbc-transaction-parent/sharding-jdbc-transaction-storage/src/test/java/io/shardingsphere/transaction/storage/AllStorageTest.java
index 45fa15ef42720..14dd960bc3234 100644
--- a/sharding-jdbc-transaction-parent/sharding-jdbc-transaction-storage/src/test/java/io/shardingsphere/transaction/storage/AllStorageTest.java
+++ b/sharding-jdbc-transaction-parent/sharding-jdbc-transaction-storage/src/test/java/io/shardingsphere/transaction/storage/AllStorageTest.java
@@ -28,5 +28,5 @@
         MemoryTransactionLogStorageTest.class, 
         RdbTransactionLogStorageTest.class
     })
-public class AllStorageTest {
+public final class AllStorageTest {
 }
diff --git a/sharding-jdbc-transaction-parent/sharding-jdbc-transaction/src/test/java/io/shardingsphere/transaction/AllTests.java b/sharding-jdbc-transaction-parent/sharding-jdbc-transaction/src/test/java/io/shardingsphere/transaction/AllTests.java
index 0050411a4dd8f..96a3123546bce 100644
--- a/sharding-jdbc-transaction-parent/sharding-jdbc-transaction/src/test/java/io/shardingsphere/transaction/AllTests.java
+++ b/sharding-jdbc-transaction-parent/sharding-jdbc-transaction/src/test/java/io/shardingsphere/transaction/AllTests.java
@@ -29,5 +29,5 @@
         BEDSoftTransactionTest.class,
         SoftTransactionTest.class
     })
-public class AllTests {
+public final class AllTests {
 }
diff --git a/sharding-jdbc/src/test/java/io/shardingsphere/core/AllTests.java b/sharding-jdbc/src/test/java/io/shardingsphere/core/AllTests.java
index eff3bff96223d..e67c2fbad32c3 100644
--- a/sharding-jdbc/src/test/java/io/shardingsphere/core/AllTests.java
+++ b/sharding-jdbc/src/test/java/io/shardingsphere/core/AllTests.java
@@ -27,5 +27,5 @@
         AllUnitTests.class,
         AllIntegrateTests.class
     })
-public class AllTests {
+public final class AllTests {
 }
diff --git a/sharding-jdbc/src/test/java/io/shardingsphere/core/AllUnitTests.java b/sharding-jdbc/src/test/java/io/shardingsphere/core/AllUnitTests.java
index 4bec3b9aff8f4..9b613e670f106 100644
--- a/sharding-jdbc/src/test/java/io/shardingsphere/core/AllUnitTests.java
+++ b/sharding-jdbc/src/test/java/io/shardingsphere/core/AllUnitTests.java
@@ -32,5 +32,5 @@
         AllJDBCTests.class,
         AllUtilTests.class
     })
-public class AllUnitTests {
+public final class AllUnitTests {
 }
diff --git a/sharding-jdbc/src/test/java/io/shardingsphere/core/api/AllApiTests.java b/sharding-jdbc/src/test/java/io/shardingsphere/core/api/AllApiTests.java
index 01923cf5c9448..146ab343c3993 100644
--- a/sharding-jdbc/src/test/java/io/shardingsphere/core/api/AllApiTests.java
+++ b/sharding-jdbc/src/test/java/io/shardingsphere/core/api/AllApiTests.java
@@ -25,5 +25,5 @@
         ShardingDataSourceFactoryTest.class, 
         MasterSlaveDataSourceFactoryTest.class
     })
-public class AllApiTests {
+public final class AllApiTests {
 }
diff --git a/sharding-jdbc/src/test/java/io/shardingsphere/core/executor/AllExecutorTests.java b/sharding-jdbc/src/test/java/io/shardingsphere/core/executor/AllExecutorTests.java
index e20e454b9f0d9..b9e5814de6d99 100644
--- a/sharding-jdbc/src/test/java/io/shardingsphere/core/executor/AllExecutorTests.java
+++ b/sharding-jdbc/src/test/java/io/shardingsphere/core/executor/AllExecutorTests.java
@@ -31,5 +31,5 @@
         PreparedStatementExecutorTest.class,
         BatchPreparedStatementExecutorTest.class
     })
-public class AllExecutorTests {
+public final class AllExecutorTests {
 }
diff --git a/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/AllJDBCTests.java b/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/AllJDBCTests.java
index 5676bffaeab0e..088a23074d05e 100644
--- a/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/AllJDBCTests.java
+++ b/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/AllJDBCTests.java
@@ -29,5 +29,5 @@
         AllAdapterTests.class,
         AllCoreTests.class
     })
-public class AllJDBCTests {
+public final class AllJDBCTests {
 }
diff --git a/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/adapter/AllAdapterTests.java b/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/adapter/AllAdapterTests.java
index 294cb3ba8b37f..13050271f9d49 100644
--- a/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/adapter/AllAdapterTests.java
+++ b/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/adapter/AllAdapterTests.java
@@ -33,5 +33,5 @@
         JdbcMethodInvocationTest.class,
         SetParameterMethodInvocationTest.class
     })
-public class AllAdapterTests {
+public final class AllAdapterTests {
 }
diff --git a/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/core/AllCoreTests.java b/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/core/AllCoreTests.java
index f5365aeb3dea5..e95ab08a9b5e8 100644
--- a/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/core/AllCoreTests.java
+++ b/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/core/AllCoreTests.java
@@ -41,5 +41,5 @@
         GeneratedKeysResultSetTest.class, 
         GeneratedKeysResultSetMetaDataTest.class 
     })
-public class AllCoreTests {
+public final class AllCoreTests {
 }
diff --git a/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/unsupported/AllUnsupportedTests.java b/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/unsupported/AllUnsupportedTests.java
index 736a206c42029..41d95308a0513 100644
--- a/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/unsupported/AllUnsupportedTests.java
+++ b/sharding-jdbc/src/test/java/io/shardingsphere/core/jdbc/unsupported/AllUnsupportedTests.java
@@ -30,5 +30,5 @@
         UnsupportedUpdateOperationResultSetTest.class,
         UnsupportedGeneratedKeysResultSetTest.class
     })
-public class AllUnsupportedTests {
+public final class AllUnsupportedTests {
 }
diff --git a/sharding-jdbc/src/test/java/io/shardingsphere/core/util/AllUtilTests.java b/sharding-jdbc/src/test/java/io/shardingsphere/core/util/AllUtilTests.java
index c0173ce511bf9..e84e652f0a90e 100644
--- a/sharding-jdbc/src/test/java/io/shardingsphere/core/util/AllUtilTests.java
+++ b/sharding-jdbc/src/test/java/io/shardingsphere/core/util/AllUtilTests.java
@@ -25,5 +25,5 @@
         EventBusInstanceTest.class,
         DataSourceUtilTest.class
     })
-public class AllUtilTests {
+public final class AllUtilTests {
 }
diff --git a/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/AllIntegrateTests.java b/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/AllIntegrateTests.java
index f8c1297b232e8..3b39b903078a5 100644
--- a/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/AllIntegrateTests.java
+++ b/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/AllIntegrateTests.java
@@ -32,5 +32,5 @@
         AllDDLTests.class,
         AllDCLTests.class
 })
-public class AllIntegrateTests {
+public final class AllIntegrateTests {
 }
diff --git a/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/dcl/AllDCLTests.java b/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/dcl/AllDCLTests.java
index c7480b4733bb4..e917660cc7818 100644
--- a/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/dcl/AllDCLTests.java
+++ b/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/dcl/AllDCLTests.java
@@ -23,5 +23,5 @@
 
 @RunWith(Suite.class)
 @SuiteClasses(GeneralDCLIntegrateTest.class)
-public class AllDCLTests {
+public final class AllDCLTests {
 }
diff --git a/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/ddl/AllDDLTests.java b/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/ddl/AllDDLTests.java
index 800e5e2de1736..ffc13e80401ab 100644
--- a/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/ddl/AllDDLTests.java
+++ b/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/ddl/AllDDLTests.java
@@ -23,5 +23,5 @@
 
 @RunWith(Suite.class)
 @SuiteClasses(GeneralDDLIntegrateTest.class)
-public class AllDDLTests {
+public final class AllDDLTests {
 }
diff --git a/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/dml/AllDMLTests.java b/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/dml/AllDMLTests.java
index 634424cf3b988..bfc5ba62627aa 100644
--- a/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/dml/AllDMLTests.java
+++ b/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/dml/AllDMLTests.java
@@ -27,5 +27,5 @@
         BatchDMLIntegrateTest.class, 
         AdditionalDMLIntegrateTest.class
     })
-public class AllDMLTests {
+public final class AllDMLTests {
 }
diff --git a/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/dql/AllDQLTests.java b/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/dql/AllDQLTests.java
index 4349ec70280e1..b1236c00f39ff 100644
--- a/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/dql/AllDQLTests.java
+++ b/sharding-jdbc/src/test/java/io/shardingsphere/dbtest/engine/dql/AllDQLTests.java
@@ -26,5 +26,5 @@
         GeneralDQLIntegrateTest.class, 
         AdditionalDQLIntegrateTest.class
     })
-public class AllDQLTests {
+public final class AllDQLTests {
 }
diff --git a/sharding-opentracing/src/test/java/io/shardingsphere/opentracing/AllTests.java b/sharding-opentracing/src/test/java/io/shardingsphere/opentracing/AllTests.java
index 15826520eb466..0a0e5d2f5a6f8 100644
--- a/sharding-opentracing/src/test/java/io/shardingsphere/opentracing/AllTests.java
+++ b/sharding-opentracing/src/test/java/io/shardingsphere/opentracing/AllTests.java
@@ -31,5 +31,5 @@
         MergeEventListenerTest.class,
         ShardingJDBCTracerTest.class
 })
-public class AllTests {
+public final class AllTests {
 }
diff --git a/sharding-proxy/src/test/java/io/shardingsphere/proxy/AllTests.java b/sharding-proxy/src/test/java/io/shardingsphere/proxy/AllTests.java
index b69910ccb9637..980cde2332b4e 100644
--- a/sharding-proxy/src/test/java/io/shardingsphere/proxy/AllTests.java
+++ b/sharding-proxy/src/test/java/io/shardingsphere/proxy/AllTests.java
@@ -36,5 +36,5 @@
         HandshakeResponse41PacketTest.class,
         RandomGeneratorTest.class
 })
-public class AllTests {
+public final class AllTests {
 }