diff --git a/spring-jms/src/test/java/org/springframework/jms/remoting/JmsInvokerTests.java b/spring-jms/src/test/java/org/springframework/jms/remoting/JmsInvokerTests.java
index 63354c358a..299ee9321f 100644
--- a/spring-jms/src/test/java/org/springframework/jms/remoting/JmsInvokerTests.java
+++ b/spring-jms/src/test/java/org/springframework/jms/remoting/JmsInvokerTests.java
@@ -51,42 +51,38 @@ import static org.mockito.Mockito.mock;
  * @author Juergen Hoeller
  * @author Stephane Nicoll
  */
-public class JmsInvokerTests {
+class JmsInvokerTests {
 
-	private QueueConnectionFactory mockConnectionFactory;
+	private QueueConnectionFactory mockConnectionFactory = mock(QueueConnectionFactory.class);
 
-	private QueueConnection mockConnection;
+	private QueueConnection mockConnection = mock(QueueConnection.class);
 
-	private QueueSession mockSession;
+	private QueueSession mockSession = mock(QueueSession.class);
 
-	private Queue mockQueue;
+	private Queue mockQueue = mock(Queue.class);
 
 
 	@BeforeEach
-	public void setUpMocks() throws Exception {
-		mockConnectionFactory = mock(QueueConnectionFactory.class);
-		mockConnection = mock(QueueConnection.class);
-		mockSession = mock(QueueSession.class);
-		mockQueue = mock(Queue.class);
-
+	void setUpMocks() throws Exception {
 		given(mockConnectionFactory.createConnection()).willReturn(mockConnection);
 		given(mockConnection.createSession(false, Session.AUTO_ACKNOWLEDGE)).willReturn(mockSession);
 	}
 
 
 	@Test
-	public void testJmsInvokerProxyFactoryBeanAndServiceExporter() throws Throwable {
+	void jmsInvokerProxyFactoryBeanAndServiceExporter() throws Throwable {
 		doTestJmsInvokerProxyFactoryBeanAndServiceExporter(false);
 	}
 
 	@Test
-	public void testJmsInvokerProxyFactoryBeanAndServiceExporterWithDynamicQueue() throws Throwable {
+	void jmsInvokerProxyFactoryBeanAndServiceExporterWithDynamicQueue() throws Throwable {
 		given(mockSession.createQueue("myQueue")).willReturn(mockQueue);
 		doTestJmsInvokerProxyFactoryBeanAndServiceExporter(true);
 	}
 
 	@Test
-	public void receiveTimeoutExpired() {
+	@SuppressWarnings("deprecation")
+	void receiveTimeoutExpired() {
 		JmsInvokerProxyFactoryBean pfb = new JmsInvokerProxyFactoryBean() {
 			@Override
 			protected Message doExecuteRequest(Session session, Queue queue, Message requestMessage) throws JMSException {
@@ -106,6 +102,7 @@ public class JmsInvokerTests {
 			.withMessageContaining("getAge");
 	}
 
+	@SuppressWarnings("deprecation")
 	private void doTestJmsInvokerProxyFactoryBeanAndServiceExporter(boolean dynamicQueue) throws Throwable {
 		TestBean target = new TestBean("myname", 99);
 
@@ -154,9 +151,9 @@ public class JmsInvokerTests {
 
 	private static class ResponseStoringProducer implements MessageProducer {
 
-		public Message response;
+		Message response;
 
-		public boolean closed = false;
+		boolean closed = false;
 
 		@Override
 		public void setDisableMessageID(boolean b) throws JMSException {