Upgrade Java 17 in policy-drools-apps

Issue-ID: POLICY-4816
Change-Id: I61d5c2c0b8bf2cc08416d91bbd84f27f2ed5c5c1
Signed-off-by: adheli.tavares <adheli.tavares@est.tech>

5 files changed, 99 insertions, 103 deletions

diff --git a/controlloop/common/feature-controlloop-trans/pom.xml b/controlloop/common/feature-controlloop-trans/pom.xml
index e86084a3d..27da2d77b 100644
--- a/controlloop/common/feature-controlloop-trans/pom.xml
+++ b/controlloop/common/feature-controlloop-trans/pom.xml
@@ -20,13 +20,14 @@
   ============LICENSE_END=========================================================
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <parent>
         <groupId>org.onap.policy.drools-applications.controlloop.common</groupId>
         <artifactId>drools-applications-common</artifactId>
-        <version>2.0.0-SNAPSHOT</version>
+        <version>2.0.1-SNAPSHOT</version>
     </parent>
 
     <artifactId>feature-controlloop-trans</artifactId>
@@ -98,9 +99,8 @@
                             <language>jaxrs-spec</language>
                             <generateModels>false</generateModels>
                             <generateSupportingFiles>false</generateSupportingFiles>
-                            <sortParamsByRequiredFlag>false</sortParamsByRequiredFlag>
                             <importMappings>
-                                Response=javax.ws.rs.core.Response
+                                Response=jakarta.ws.rs.core.Response
                             </importMappings>
                             <typeMappings>
                                 <typeMapping>Integer=int</typeMapping>
@@ -109,8 +109,9 @@
                             <configOptions>
                                 <useTags>true</useTags>
                                 <sourceFolder>src/gen/java</sourceFolder>
-                                <dateLibrary>java11</dateLibrary>
+                                <dateLibrary>java17</dateLibrary>
                                 <interfaceOnly>true</interfaceOnly>
+                                <jakarta>true</jakarta>
                             </configOptions>
                         </configuration>
                     </execution>
diff --git a/controlloop/common/feature-controlloop-trans/src/main/java/org/onap/policy/drools/apps/controlloop/feature/trans/CacheBasedControlLoopMetricsManager.java b/controlloop/common/feature-controlloop-trans/src/main/java/org/onap/policy/drools/apps/controlloop/feature/trans/CacheBasedControlLoopMetricsManager.java
index 66a975024..93f204df3 100644
--- a/controlloop/common/feature-controlloop-trans/src/main/java/org/onap/policy/drools/apps/controlloop/feature/trans/CacheBasedControlLoopMetricsManager.java
+++ b/controlloop/common/feature-controlloop-trans/src/main/java/org/onap/policy/drools/apps/controlloop/feature/trans/CacheBasedControlLoopMetricsManager.java
@@ -3,6 +3,7 @@
  * ONAP
  * ================================================================================
  * Copyright (C) 2019-2022 AT&T Intellectual Property. All rights reserved.
+ * Modifications Copyright (C) 2023 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -166,16 +167,10 @@ class CacheBasedControlLoopMetricsManager implements ControlLoopMetrics {
         setNotificationValues(controller, notification);
 
         switch (notification.getNotification()) {
-            case REJECTED:
-            case FINAL_FAILURE:
-            case FINAL_SUCCESS:
-            case FINAL_OPENLOOP:
+            case REJECTED, FINAL_FAILURE, FINAL_SUCCESS, FINAL_OPENLOOP:
                 endTransaction(controller, notification);
                 break;
-            case ACTIVE:
-            case OPERATION:
-            case OPERATION_SUCCESS:
-            case OPERATION_FAILURE:
+            case ACTIVE, OPERATION, OPERATION_SUCCESS, OPERATION_FAILURE:
                 /* any other value is an in progress transaction */
                 inProgressTransaction(notification);
                 break;
@@ -358,14 +353,14 @@ class CacheBasedControlLoopMetricsManager implements ControlLoopMetrics {
                 .setEndTime(notification.getNotificationTime().toInstant());
 
         switch (notification.getNotification()) {
-            case FINAL_OPENLOOP:
-                /* fall through */
-            case FINAL_SUCCESS:
+            case FINAL_OPENLOOP,
+                 /* fall through */
+                 FINAL_SUCCESS:
                 trans.setStatusCode(true);
                 break;
-            case FINAL_FAILURE:
-                /* fall through */
-            case REJECTED:
+            case FINAL_FAILURE,
+                 /* fall through */
+                 REJECTED:
                 trans.setStatusCode(false);
                 break;
             default:
diff --git a/controlloop/common/feature-controlloop-trans/src/main/java/org/onap/policy/drools/server/restful/RestTransactionTracker.java b/controlloop/common/feature-controlloop-trans/src/main/java/org/onap/policy/drools/server/restful/RestTransactionTracker.java
index be4f1b69f..d6d8d1aec 100644
--- a/controlloop/common/feature-controlloop-trans/src/main/java/org/onap/policy/drools/server/restful/RestTransactionTracker.java
+++ b/controlloop/common/feature-controlloop-trans/src/main/java/org/onap/policy/drools/server/restful/RestTransactionTracker.java
@@ -21,15 +21,15 @@
 
 package org.onap.policy.drools.server.restful;
 
+import jakarta.ws.rs.Consumes;
+import jakarta.ws.rs.GET;
+import jakarta.ws.rs.PUT;
+import jakarta.ws.rs.Path;
+import jakarta.ws.rs.PathParam;
+import jakarta.ws.rs.Produces;
+import jakarta.ws.rs.core.MediaType;
+import jakarta.ws.rs.core.Response;
 import java.util.UUID;
-import javax.ws.rs.Consumes;
-import javax.ws.rs.GET;
-import javax.ws.rs.PUT;
-import javax.ws.rs.Path;
-import javax.ws.rs.PathParam;
-import javax.ws.rs.Produces;
-import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.Response;
 import org.onap.policy.common.endpoints.http.server.YamlMessageBodyHandler;
 import org.onap.policy.controlloop.VirtualControlLoopNotification;
 import org.onap.policy.drools.apps.controlloop.feature.trans.ControlLoopMetricsManager;
diff --git a/controlloop/common/feature-controlloop-trans/src/test/java/org/onap/policy/drools/apps/controlloop/feature/trans/ControlLoopMetricsFeatureTest.java b/controlloop/common/feature-controlloop-trans/src/test/java/org/onap/policy/drools/apps/controlloop/feature/trans/ControlLoopMetricsFeatureTest.java
index ba39b2799..77ce83b83 100644
--- a/controlloop/common/feature-controlloop-trans/src/test/java/org/onap/policy/drools/apps/controlloop/feature/trans/ControlLoopMetricsFeatureTest.java
+++ b/controlloop/common/feature-controlloop-trans/src/test/java/org/onap/policy/drools/apps/controlloop/feature/trans/ControlLoopMetricsFeatureTest.java
@@ -3,6 +3,7 @@
  * ONAP
  * ================================================================================
  * Copyright (C) 2018-2021 AT&T Intellectual Property. All rights reserved.
+ * Modifications Copyright (C) 2023 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,20 +22,20 @@
 package org.onap.policy.drools.apps.controlloop.feature.trans;
 
 import static org.awaitility.Awaitility.await;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.nio.file.Path;
 import java.util.UUID;
 import java.util.concurrent.TimeUnit;
-import org.junit.AfterClass;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
 import org.onap.policy.common.utils.resources.ResourceUtils;
 import org.onap.policy.controlloop.ControlLoopNotificationType;
@@ -47,7 +48,7 @@ import org.onap.policy.drools.system.PolicyEngineConstants;
 /**
  * ControlLoopMetrics Tests.
  */
-public class ControlLoopMetricsFeatureTest {
+class ControlLoopMetricsFeatureTest {
 
     private static final String POLICY_CL_MGT = "POLICY-CL-MGT";
     private static final Path configPath = SystemPersistenceConstants.getManager().getConfigurationPath();
@@ -66,39 +67,39 @@ public class ControlLoopMetricsFeatureTest {
     /**
      * Setup method.
      */
-    @BeforeClass
+    @BeforeAll
     public static void setUp() {
         SystemPersistenceConstants.getManager().setConfigurationDir("src/test/resources");
         testController = PolicyEngineConstants.getManager().createPolicyController("metrics",
                 SystemPersistenceConstants.getManager().getControllerProperties("metrics"));
     }
 
-    @AfterClass
+    @AfterAll
     public static void tearDown() {
         SystemPersistenceConstants.getManager().setConfigurationDir(configPath.toString());
         resetStats();
     }
 
-    @Before
+    @BeforeEach
     public void beforeTest() {
         resetStats();
     }
 
     @Test
-    public void testCacheDefaults() {
+    void testCacheDefaults() {
         assertEquals(3, ControlLoopMetricsManager.getManager().getCacheSize());
         assertEquals(2, ControlLoopMetricsManager.getManager().getTransactionTimeout());
         assertEquals(0, ControlLoopMetricsManager.getManager().getCacheOccupancy());
     }
 
     @Test
-    public void testInvalidNotifications() {
-        ControlLoopMetricsFeature feature = new ControlLoopMetricsFeature();
-        VirtualControlLoopNotification notification = new VirtualControlLoopNotification();
+    void testInvalidNotifications() {
+        var feature = new ControlLoopMetricsFeature();
+        var notification = new VirtualControlLoopNotification();
         feature.beforeDeliver(testController, CommInfrastructure.DMAAP, POLICY_CL_MGT, notification);
         this.testCacheDefaults();
 
-        UUID requestId = UUID.randomUUID();
+        var requestId = UUID.randomUUID();
         notification.setRequestId(requestId);
 
         feature.beforeDeliver(testController, CommInfrastructure.DMAAP, POLICY_CL_MGT, notification);
@@ -107,10 +108,10 @@ public class ControlLoopMetricsFeatureTest {
     }
 
     @Test
-    public void testValidActiveNotification() {
-        ControlLoopMetricsFeature feature = new ControlLoopMetricsFeature();
-        VirtualControlLoopNotification notification = new VirtualControlLoopNotification();
-        UUID requestId = UUID.randomUUID();
+    void testValidActiveNotification() {
+        var feature = new ControlLoopMetricsFeature();
+        var notification = new VirtualControlLoopNotification();
+        var requestId = UUID.randomUUID();
         notification.setRequestId(requestId);
         notification.setNotification(ControlLoopNotificationType.ACTIVE);
 
@@ -129,8 +130,8 @@ public class ControlLoopMetricsFeatureTest {
     }
 
     @Test
-    public void testReset() {
-        VirtualControlLoopNotification notification = this.generateNotification();
+    void testReset() {
+        var notification = this.generateNotification();
         new ControlLoopMetricsFeature().beforeDeliver(testController, CommInfrastructure.DMAAP, POLICY_CL_MGT,
                 notification);
 
@@ -143,8 +144,8 @@ public class ControlLoopMetricsFeatureTest {
     }
 
     @Test
-    public void testRemoveTransaction() {
-        VirtualControlLoopNotification notification = this.generateNotification();
+    void testRemoveTransaction() {
+        var notification = this.generateNotification();
         assertNull(ControlLoopMetricsManager.getManager().getTransaction(notification.getRequestId()));
         ControlLoopMetricsManager.getManager().removeTransaction(notification.getRequestId());
 
@@ -155,10 +156,10 @@ public class ControlLoopMetricsFeatureTest {
     }
 
     @Test
-    public void testEviction() {
-        ControlLoopMetricsFeature feature = new ControlLoopMetricsFeature();
+    void testEviction() {
+        var feature = new ControlLoopMetricsFeature();
         for (int i = 0; i < ControlLoopMetricsManager.getManager().getCacheSize(); i++) {
-            VirtualControlLoopNotification notification = generateNotification();
+            var notification = generateNotification();
             feature.beforeDeliver(testController, CommInfrastructure.DMAAP, POLICY_CL_MGT, notification);
             assertNotNull(ControlLoopMetricsManager.getManager().getTransaction(notification.getRequestId()));
         }
@@ -166,7 +167,7 @@ public class ControlLoopMetricsFeatureTest {
         assertEquals(ControlLoopMetricsManager.getManager().getCacheOccupancy(),
                         ControlLoopMetricsManager.getManager().getCacheOccupancy());
 
-        VirtualControlLoopNotification overflowNotification = generateNotification();
+        var overflowNotification = generateNotification();
         feature.beforeDeliver(testController, CommInfrastructure.DMAAP, POLICY_CL_MGT, overflowNotification);
         assertEquals(ControlLoopMetricsManager.getManager().getCacheOccupancy(),
                         ControlLoopMetricsManager.getManager().getCacheOccupancy());
@@ -194,57 +195,57 @@ public class ControlLoopMetricsFeatureTest {
     }
 
     private VirtualControlLoopNotification generateNotification() {
-        VirtualControlLoopNotification notification = new VirtualControlLoopNotification();
-        UUID requestId = UUID.randomUUID();
+        var notification = new VirtualControlLoopNotification();
+        var requestId = UUID.randomUUID();
         notification.setRequestId(requestId);
         notification.setNotification(ControlLoopNotificationType.ACTIVE);
         return notification;
     }
 
     @Test
-    public void getSequenceNumber() {
-        ControlLoopMetricsFeature feature = new ControlLoopMetricsFeature();
+    void getSequenceNumber() {
+        var feature = new ControlLoopMetricsFeature();
         assertEquals(ControlLoopMetricsFeature.FEATURE_SEQUENCE_PRIORITY, feature.getSequenceNumber());
     }
 
     @Test
-    public void testSuccessControlLoop() {
-        ControlLoopMetricsFeature feature = new ControlLoopMetricsFeature();
+    void testSuccessControlLoop() {
+        var feature = new ControlLoopMetricsFeature();
 
-        String activeNotification = ResourceUtils.getResourceAsString("policy-cl-mgt-active.json");
-        VirtualControlLoopNotification active =
+        var activeNotification = ResourceUtils.getResourceAsString("policy-cl-mgt-active.json");
+        var active =
                 Serialization.gsonPretty.fromJson(activeNotification, VirtualControlLoopNotification.class);
         feature.beforeDeliver(testController, CommInfrastructure.DMAAP, POLICY_CL_MGT, active);
         assertEquals(1, ControlLoopMetricsManager.getManager().getTransactionIds().size());
 
-        String opStartNotification = ResourceUtils.getResourceAsString("policy-cl-mgt-operation.json");
-        VirtualControlLoopNotification opStart =
+        var opStartNotification = ResourceUtils.getResourceAsString("policy-cl-mgt-operation.json");
+        var opStart =
                 Serialization.gsonPretty.fromJson(opStartNotification, VirtualControlLoopNotification.class);
         feature.beforeDeliver(testController, CommInfrastructure.DMAAP, POLICY_CL_MGT, opStart);
         assertEquals(1, ControlLoopMetricsManager.getManager().getTransactionIds().size());
 
-        String permitNotification = ResourceUtils.getResourceAsString("policy-cl-mgt-permit.json");
-        VirtualControlLoopNotification permit =
+        var permitNotification = ResourceUtils.getResourceAsString("policy-cl-mgt-permit.json");
+        var permit =
                 Serialization.gsonPretty.fromJson(permitNotification, VirtualControlLoopNotification.class);
         feature.beforeDeliver(testController, CommInfrastructure.DMAAP, POLICY_CL_MGT, permit);
         assertEquals(1, ControlLoopMetricsManager.getManager().getTransactionIds().size());
 
-        String restartNotification = ResourceUtils.getResourceAsString("policy-cl-mgt-restart.json");
-        VirtualControlLoopNotification restart =
+        var restartNotification = ResourceUtils.getResourceAsString("policy-cl-mgt-restart.json");
+        var restart =
                 Serialization.gsonPretty.fromJson(restartNotification, VirtualControlLoopNotification.class);
         feature.beforeDeliver(testController, CommInfrastructure.DMAAP, POLICY_CL_MGT, restart);
         assertEquals(1, ControlLoopMetricsManager.getManager().getTransactionIds().size());
 
-        String restartSuccessNotification =
+        var restartSuccessNotification =
                 ResourceUtils.getResourceAsString("policy-cl-mgt-restart-success.json");
-        VirtualControlLoopNotification restartSuccess =
+        var restartSuccess =
                 Serialization.gsonPretty.fromJson(restartSuccessNotification, VirtualControlLoopNotification.class);
         feature.beforeDeliver(testController, CommInfrastructure.DMAAP, POLICY_CL_MGT, restartSuccess);
         assertEquals(1, ControlLoopMetricsManager.getManager().getTransactionIds().size());
 
-        String finalSuccessNotification =
+        var finalSuccessNotification =
                 ResourceUtils.getResourceAsString("policy-cl-mgt-final-success.json");
-        VirtualControlLoopNotification finalSuccess =
+        var finalSuccess =
                 Serialization.gsonPretty.fromJson(finalSuccessNotification, VirtualControlLoopNotification.class);
         feature.beforeDeliver(testController, CommInfrastructure.DMAAP, POLICY_CL_MGT, finalSuccess);
         assertEquals(0, ControlLoopMetricsManager.getManager().getTransactionIds().size());
@@ -264,20 +265,20 @@ public class ControlLoopMetricsFeatureTest {
     }
 
     @Test
-    public void testUntrackedNotifications() throws InterruptedException {
-        ControlLoopMetricsFeature feature = new ControlLoopMetricsFeature();
+    void testUntrackedNotifications() throws InterruptedException {
+        var feature = new ControlLoopMetricsFeature();
 
-        String finalSuccessNotification =
+        var finalSuccessNotification =
                 ResourceUtils.getResourceAsString("policy-cl-mgt-final-success.json");
-        VirtualControlLoopNotification finalSuccess =
+        var finalSuccess =
                 Serialization.gsonPretty.fromJson(finalSuccessNotification, VirtualControlLoopNotification.class);
         finalSuccess.setRequestId(UUID.randomUUID());
         feature.beforeDeliver(testController, CommInfrastructure.DMAAP, POLICY_CL_MGT, finalSuccess);
         assertEquals(0, ControlLoopMetricsManager.getManager().getTransactionIds().size());
 
-        String opStartNotification =
+        var opStartNotification =
                 ResourceUtils.getResourceAsString("policy-cl-mgt-operation.json");
-        VirtualControlLoopNotification opStart =
+        var opStart =
                 Serialization.gsonPretty.fromJson(opStartNotification, VirtualControlLoopNotification.class);
         feature.beforeDeliver(testController, CommInfrastructure.DMAAP, POLICY_CL_MGT, opStart);
         assertEquals(1, ControlLoopMetricsManager.getManager().getTransactionIds().size());
@@ -285,5 +286,4 @@ public class ControlLoopMetricsFeatureTest {
         Thread.sleep((ControlLoopMetricsManager.getManager().getTransactionTimeout() + 1) * 1000L);  // NOSONAR
         assertEquals(0, ControlLoopMetricsManager.getManager().getTransactionIds().size());
     }
-
 }
diff --git a/controlloop/common/feature-controlloop-trans/src/test/java/org/onap/policy/drools/server/restful/RestTransactionTrackerTest.java b/controlloop/common/feature-controlloop-trans/src/test/java/org/onap/policy/drools/server/restful/RestTransactionTrackerTest.java
index 02842da65..39adb8120 100644
--- a/controlloop/common/feature-controlloop-trans/src/test/java/org/onap/policy/drools/server/restful/RestTransactionTrackerTest.java
+++ b/controlloop/common/feature-controlloop-trans/src/test/java/org/onap/policy/drools/server/restful/RestTransactionTrackerTest.java
@@ -3,6 +3,7 @@
  * ONAP
  * ================================================================================
  * Copyright (C) 2020 AT&T Intellectual Property. All rights reserved.
+ * Modifications Copyright (C) 2023 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,24 +21,23 @@
 
 package org.onap.policy.drools.server.restful;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
+import jakarta.ws.rs.client.Entity;
+import jakarta.ws.rs.core.Response;
 import java.util.Collections;
 import java.util.List;
-import javax.ws.rs.client.Entity;
-import javax.ws.rs.core.Response;
 import org.jetbrains.annotations.NotNull;
-import org.junit.AfterClass;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 import org.onap.policy.common.endpoints.event.comm.Topic;
 import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
 import org.onap.policy.common.endpoints.http.client.HttpClient;
 import org.onap.policy.common.endpoints.http.client.HttpClientFactoryInstance;
-import org.onap.policy.common.endpoints.http.server.HttpServletServer;
 import org.onap.policy.common.endpoints.http.server.HttpServletServerFactoryInstance;
 import org.onap.policy.common.utils.network.NetworkUtil;
 import org.onap.policy.common.utils.resources.ResourceUtils;
@@ -49,12 +49,12 @@ import org.onap.policy.drools.persistence.SystemPersistenceConstants;
 import org.onap.policy.drools.system.PolicyController;
 import org.onap.policy.drools.system.PolicyEngineConstants;
 
-public class RestTransactionTrackerTest {
+class RestTransactionTrackerTest {
 
     private static PolicyController testController;
     private static HttpClient client;
 
-    @BeforeClass
+    @BeforeAll
     public static void testBeforeClass() throws Exception {
         SystemPersistenceConstants.getManager().setConfigurationDir("target/test-classes");
 
@@ -70,7 +70,7 @@ public class RestTransactionTrackerTest {
                         .managed(true)
                         .build());
 
-        HttpServletServer server =
+        var server =
                 HttpServletServerFactoryInstance
                         .getServerFactory()
                         .build("trans", "localhost", 8769, "/", true, true);
@@ -84,7 +84,7 @@ public class RestTransactionTrackerTest {
         client = HttpClientFactoryInstance.getClientFactory().get("trans");
     }
 
-    @AfterClass
+    @AfterAll
     public static void testAfterClass() {
         HttpClientFactoryInstance.getClientFactory().destroy();
         HttpServletServerFactoryInstance.getServerFactory().destroy();
@@ -93,7 +93,7 @@ public class RestTransactionTrackerTest {
     }
 
     @Test
-    public void testConfiguration() {
+    void testConfiguration() {
         equals(get("cacheSize", Response.Status.OK.getStatusCode()), Integer.class, 3);
         equals(get("timeout", Response.Status.OK.getStatusCode()), Integer.class, 2);
 
@@ -111,7 +111,7 @@ public class RestTransactionTrackerTest {
     }
 
     @Test
-    public void testTransactions() {
+    void testTransactions() {
         equals(get("/inprogress", Response.Status.OK.getStatusCode()), List.class, Collections.emptyList());
 
         ControlLoopMetricsFeature feature = new ControlLoopMetricsFeature();
@@ -120,8 +120,8 @@ public class RestTransactionTrackerTest {
                 List.class).isEmpty());
         get("/inprogress/664be3d2-6c12-4f4b-a3e7-c349acced200", Response.Status.NOT_FOUND.getStatusCode());
 
-        String activeNotification = ResourceUtils.getResourceAsString("policy-cl-mgt-active.json");
-        VirtualControlLoopNotification active =
+        var activeNotification = ResourceUtils.getResourceAsString("policy-cl-mgt-active.json");
+        var active =
                 Serialization.gsonPretty.fromJson(activeNotification, VirtualControlLoopNotification.class);
         feature.beforeDeliver(testController, Topic.CommInfrastructure.DMAAP, "POLICY-CL-MGT", active);
         assertEquals(1, ControlLoopMetricsManager.getManager().getTransactionIds().size());
@@ -133,12 +133,12 @@ public class RestTransactionTrackerTest {
     }
 
     private Response get(String contextPath, int statusCode) {
-        Response response = client.get(contextPath);
+        var response = client.get(contextPath);
         return checkResponse(statusCode, response);
     }
 
     private Response put(String contextPath, String body, int statusCode) {
-        Response response = client.put(contextPath, Entity.json(body), Collections.emptyMap());
+        var response = client.put(contextPath, Entity.json(body), Collections.emptyMap());
         return checkResponse(statusCode, response);
     }