diff --git a/swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/TestApiResponse.java b/swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/TestApiResponse.java
index 58e1ebeb77f..e39b3bbf858 100644
--- a/swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/TestApiResponse.java
+++ b/swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/TestApiResponse.java
@@ -21,7 +21,9 @@
 import org.apache.servicecomb.swagger.generator.core.model.SwaggerOperations;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestInstance;
 
 import io.swagger.v3.oas.annotations.headers.Header;
 import io.swagger.v3.oas.annotations.media.Content;
@@ -30,11 +32,18 @@
 import io.swagger.v3.oas.annotations.responses.ApiResponses;
 import jakarta.ws.rs.core.MediaType;
 
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
 public class TestApiResponse {
-  static SwaggerOperations swaggerOperations = SwaggerOperations.generate(ApiResponseAnnotation.class);
+
+  SwaggerOperations swaggerOperations;
+
+  @BeforeAll
+  public void setUp() {
+    swaggerOperations = SwaggerOperations.generate(ApiResponseAnnotation.class);
+  }
 
   @AfterAll
-  public static void teardown() {
+  public void tearDown() {
     swaggerOperations = null;
   }
 
diff --git a/swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/TestOperationGenerator.java b/swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/TestOperationGenerator.java
index f238e91ff34..b46b9bb8327 100644
--- a/swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/TestOperationGenerator.java
+++ b/swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/TestOperationGenerator.java
@@ -27,7 +27,9 @@
 import org.hamcrest.MatcherAssert;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestInstance;
 
 import io.swagger.v3.oas.annotations.OpenAPIDefinition;
 import io.swagger.v3.oas.annotations.Operation;
@@ -39,11 +41,17 @@
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
 public class TestOperationGenerator {
-  static SwaggerOperations swaggerOperations = SwaggerOperations.generate(TestClass.class);
+  SwaggerOperations swaggerOperations;
+
+  @BeforeAll
+  public void setUp() {
+    swaggerOperations = SwaggerOperations.generate(TestClass.class);
+  }
 
   @AfterAll
-  public static void teardown() {
+  public void tearDown() {
     swaggerOperations = null;
   }
 
diff --git a/swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/processor/annotation/OperationMethodAnnotationProcessorTest.java b/swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/processor/annotation/OperationMethodAnnotationProcessorTest.java
index e164a97cadf..fdc3cea273e 100644
--- a/swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/processor/annotation/OperationMethodAnnotationProcessorTest.java
+++ b/swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/processor/annotation/OperationMethodAnnotationProcessorTest.java
@@ -28,7 +28,9 @@
 import org.hamcrest.Matchers;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestInstance;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.media.Content;
@@ -41,11 +43,17 @@
 import jakarta.validation.constraints.NotNull;
 import jakarta.ws.rs.core.MediaType;
 
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
 public class OperationMethodAnnotationProcessorTest {
-  static SwaggerOperations swaggerOperations = SwaggerOperations.generate(TestClass.class);
+  SwaggerOperations swaggerOperations;
+
+  @BeforeAll
+  public void setUp() {
+    swaggerOperations = SwaggerOperations.generate(TestClass.class);
+  }
 
   @AfterAll
-  public static void teardown() {
+  public void tearDown() {
     swaggerOperations = null;
   }