diff --git a/client/src/main/java/org/glassfish/tyrus/client/ClientManager.java b/client/src/main/java/org/glassfish/tyrus/client/ClientManager.java
index 151aa248..bf9dd548 100755
--- a/client/src/main/java/org/glassfish/tyrus/client/ClientManager.java
+++ b/client/src/main/java/org/glassfish/tyrus/client/ClientManager.java
@@ -297,45 +297,25 @@ public Session connectToServer(final Class annotatedEndpointClass, final URI pat
                             "Class argument in connectToServer(Class, URI) is to be annotated endpoint class. Class "
                                     + "%s does not have @ClientEndpoint", annotatedEndpointClass.getName()));
         }
-        return tryCatchInterruptedExecutionEx(new SupplierWithEx<Future<Session>, DeploymentException>() {
-            @Override
-            public Future<Session> get() throws DeploymentException {
-                return connectToServer(annotatedEndpointClass, null, path.toString(), true);
-            }
-        });
+        return tryCatchInterruptedExecutionEx(() -> connectToServer(annotatedEndpointClass, null, path.toString(), true));
     }
 
     @Override
     public Session connectToServer(final Class<? extends Endpoint> endpointClass,
                                    final ClientEndpointConfig cec,
                                    final URI path) throws DeploymentException, IOException {
-        return tryCatchInterruptedExecutionEx(new SupplierWithEx<Future<Session>, DeploymentException>() {
-            @Override
-            public Future<Session> get() throws DeploymentException {
-                return connectToServer(endpointClass, cec, path.toString(), true);
-            }
-        });
+        return tryCatchInterruptedExecutionEx(() -> connectToServer(endpointClass, cec, path.toString(), true));
     }
 
     @Override
     public Session connectToServer(final Endpoint endpointInstance, final ClientEndpointConfig cec, final URI path) throws
             DeploymentException, IOException {
-        return tryCatchInterruptedExecutionEx(new SupplierWithEx<Future<Session>, DeploymentException>() {
-            @Override
-            public Future<Session> get() throws DeploymentException {
-                return connectToServer(endpointInstance, cec, path.toString(), true);
-            }
-        });
+        return tryCatchInterruptedExecutionEx(() -> connectToServer(endpointInstance, cec, path.toString(), true));
     }
 
     @Override
     public Session connectToServer(final Object obj, final URI path) throws DeploymentException, IOException {
-        return tryCatchInterruptedExecutionEx(new SupplierWithEx<Future<Session>, DeploymentException>() {
-            @Override
-            public Future<Session> get() throws DeploymentException {
-                return connectToServer(obj, null, path.toString(), true);
-            }
-        });
+        return tryCatchInterruptedExecutionEx(() -> connectToServer(obj, null, path.toString(), true));
     }
 
     private Session tryCatchInterruptedExecutionEx(SupplierWithEx<Future<Session>, DeploymentException> supplier)
diff --git a/core/src/main/java/org/glassfish/tyrus/core/AnnotatedEndpoint.java b/core/src/main/java/org/glassfish/tyrus/core/AnnotatedEndpoint.java
index eee3975e..b3334d8a 100755
--- a/core/src/main/java/org/glassfish/tyrus/core/AnnotatedEndpoint.java
+++ b/core/src/main/java/org/glassfish/tyrus/core/AnnotatedEndpoint.java
@@ -95,7 +95,7 @@ public static AnnotatedEndpoint fromClass(Class<?> annotatedClass, ComponentProv
                                               boolean isServerEndpoint, int incomingBufferSize, ErrorCollector
                                               collector, EndpointEventListener endpointEventListener) {
         return fromClass(annotatedClass, componentProvider, isServerEndpoint, incomingBufferSize, collector,
-                                      endpointEventListener, (Set<Extension>) (Set) Collections.emptySet());
+                                      endpointEventListener, Collections.emptySet());
     }
 
     /**
@@ -132,7 +132,7 @@ public static AnnotatedEndpoint fromInstance(
             Object annotatedInstance, ComponentProviderService componentProvider, boolean isServerEndpoint,
             int incomingBufferSize, ErrorCollector collector) {
         return fromInstance(annotatedInstance, componentProvider, isServerEndpoint, incomingBufferSize,
-                                     collector, (Set<Extension>) (Set) Collections.emptySet());
+                                     collector, Collections.emptySet());
     }
 
      /**
diff --git a/core/src/main/java/org/glassfish/tyrus/core/TyrusServerEndpointConfigurator.java b/core/src/main/java/org/glassfish/tyrus/core/TyrusServerEndpointConfigurator.java
index dc30b8d5..3b7fb8f9 100644
--- a/core/src/main/java/org/glassfish/tyrus/core/TyrusServerEndpointConfigurator.java
+++ b/core/src/main/java/org/glassfish/tyrus/core/TyrusServerEndpointConfigurator.java
@@ -17,8 +17,6 @@
 package org.glassfish.tyrus.core;
 
 import java.lang.reflect.Method;
-import java.security.AccessController;
-import java.security.PrivilegedAction;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -28,7 +26,6 @@
 import jakarta.websocket.server.ServerEndpointConfig;
 
 import org.glassfish.tyrus.core.collection.LazyValue;
-import org.glassfish.tyrus.core.collection.Value;
 import org.glassfish.tyrus.core.collection.Values;
 import org.glassfish.tyrus.core.extension.ExtendedExtension;
 import org.glassfish.tyrus.core.frame.Frame;
@@ -43,12 +40,7 @@ public class TyrusServerEndpointConfigurator extends ServerEndpointConfig.Config
     private LazyValue<ComponentProviderService> componentProviderService;
 
     public TyrusServerEndpointConfigurator() {
-        this.componentProviderService = Values.lazy(new Value<ComponentProviderService>() {
-            @Override
-            public ComponentProviderService get() {
-                return ComponentProviderService.create();
-            }
-        });
+        this.componentProviderService = Values.lazy(() -> ComponentProviderService.create());
     }
 
     @Override
diff --git a/ext/client-java8/pom.xml b/ext/client-java8/pom.xml
index a188e4e3..4aab416b 100644
--- a/ext/client-java8/pom.xml
+++ b/ext/client-java8/pom.xml
@@ -77,13 +77,6 @@
                     <unpackBundle>true</unpackBundle>
                 </configuration>
             </plugin>
-            <plugin>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
-                </configuration>
-            </plugin>
         </plugins>
     </build>
 
diff --git a/tests/release-test/pom.xml b/tests/release-test/pom.xml
index d7f1a023..9fa55b5e 100644
--- a/tests/release-test/pom.xml
+++ b/tests/release-test/pom.xml
@@ -57,13 +57,6 @@
                     </includes>
                 </configuration>
             </plugin>
-            <plugin>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
-                </configuration>
-            </plugin>
         </plugins>
     </build>
 
diff --git a/tests/tools/pom.xml b/tests/tools/pom.xml
index 72d9e037..bc45bdaf 100755
--- a/tests/tools/pom.xml
+++ b/tests/tools/pom.xml
@@ -43,13 +43,6 @@
                     <unpackBundle>true</unpackBundle>
                 </configuration>
             </plugin>
-            <plugin>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
-                </configuration>
-            </plugin>
         </plugins>
     </build>