Use <> operator where appropriate now minimum Java version is Java 8

Signed-off-by: Mark Thomas <markt@apache.org>

api/client/src/main/java/jakarta/websocket/ClientEndpointConfig.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, 2019 Oracle and/or its affiliates and others.
+ * Copyright (c) 2018, 2020 Oracle and/or its affiliates and others.
  * All rights reserved.
  *
  * This program and the accompanying materials are made available under the
@@ -167,7 +167,7 @@ public ClientEndpointConfig.Builder configurator(ClientEndpointConfig.Configurat
          * @return the builder instance
          */
         public ClientEndpointConfig.Builder preferredSubprotocols(List<String> preferredSubprotocols) {
-            this.preferredSubprotocols = (preferredSubprotocols == null) ? new ArrayList<String>()
+            this.preferredSubprotocols = (preferredSubprotocols == null) ? new ArrayList<>()
                     : preferredSubprotocols;
             return this;
         }
@@ -180,7 +180,7 @@ public ClientEndpointConfig.Builder preferredSubprotocols(List<String> preferred
          * @return the builder instance
          */
         public ClientEndpointConfig.Builder extensions(List<Extension> extensions) {
-            this.extensions = (extensions == null) ? new ArrayList<Extension>() : extensions;
+            this.extensions = (extensions == null) ? new ArrayList<>() : extensions;
             return this;
         }
 
@@ -191,7 +191,7 @@ public ClientEndpointConfig.Builder extensions(List<Extension> extensions) {
          * @return the builder instance
          */
         public ClientEndpointConfig.Builder encoders(List<Class<? extends Encoder>> encoders) {
-            this.encoders = (encoders == null) ? new ArrayList<Class<? extends Encoder>>() : encoders;
+            this.encoders = (encoders == null) ? new ArrayList<>() : encoders;
             return this;
         }
 
@@ -202,7 +202,7 @@ public ClientEndpointConfig.Builder encoders(List<Class<? extends Encoder>> enco
          * @return this builder instance
          */
         public ClientEndpointConfig.Builder decoders(List<Class<? extends Decoder>> decoders) {
-            this.decoders = (decoders == null) ? new ArrayList<Class<? extends Decoder>>() : decoders;
+            this.decoders = (decoders == null) ? new ArrayList<>() : decoders;
             return this;
         }
 

api/client/src/main/java/jakarta/websocket/DefaultClientEndpointConfig.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, 2019 Oracle and/or its affiliates and others.
+ * Copyright (c) 2018, 2020 Oracle and/or its affiliates and others.
  * All rights reserved.
  *
  * This program and the accompanying materials are made available under the
@@ -32,7 +32,7 @@ final class DefaultClientEndpointConfig implements ClientEndpointConfig {
     private List<Extension> extensions;
     private List<Class<? extends Encoder>> encoders;
     private List<Class<? extends Decoder>> decoders;
-    private Map<String, Object> userProperties = new HashMap<String, Object>();
+    private Map<String, Object> userProperties = new HashMap<>();
     private ClientEndpointConfig.Configurator clientEndpointConfigurator;
 
     DefaultClientEndpointConfig(List<String> preferredSubprotocols, List<Extension> extensions,

api/server/src/main/java/jakarta/websocket/server/DefaultServerEndpointConfig.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, 2019 Oracle and/or its affiliates and others.
+ * Copyright (c) 2018, 2020 Oracle and/or its affiliates and others.
  * All rights reserved.
  *
  * This program and the accompanying materials are made available under the
@@ -40,7 +40,7 @@ final class DefaultServerEndpointConfig implements ServerEndpointConfig {
     private List<Extension> extensions;
     private List<Class<? extends Encoder>> encoders;
     private List<Class<? extends Decoder>> decoders;
-    private Map<String, Object> userProperties = new HashMap<String, Object>();
+    private Map<String, Object> userProperties = new HashMap<>();
     private ServerEndpointConfig.Configurator serverEndpointConfigurator;
 
     // The builder ensures nothing except configurator can be {@code null}.

api/server/src/main/java/jakarta/websocket/server/ServerEndpointConfig.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, 2019 Oracle and/or its affiliates and others.
+ * Copyright (c) 2018, 2020 Oracle and/or its affiliates and others.
  * All rights reserved.
  *
  * This program and the accompanying materials are made available under the
@@ -281,7 +281,7 @@ private Builder(Class<?> endpointClass, String path) {
          * @return this builder instance
          */
         public ServerEndpointConfig.Builder encoders(List<Class<? extends Encoder>> encoders) {
-            this.encoders = (encoders == null) ? new ArrayList<Class<? extends Encoder>>() : encoders;
+            this.encoders = (encoders == null) ? new ArrayList<>() : encoders;
             return this;
         }
 
@@ -292,7 +292,7 @@ public ServerEndpointConfig.Builder encoders(List<Class<? extends Encoder>> enco
          * @return this builder instance.
          */
         public ServerEndpointConfig.Builder decoders(List<Class<? extends Decoder>> decoders) {
-            this.decoders = (decoders == null) ? new ArrayList<Class<? extends Decoder>>() : decoders;
+            this.decoders = (decoders == null) ? new ArrayList<>() : decoders;
             return this;
         }
 
@@ -303,7 +303,7 @@ public ServerEndpointConfig.Builder decoders(List<Class<? extends Decoder>> deco
          * @return this builder instance
          */
         public ServerEndpointConfig.Builder subprotocols(List<String> subprotocols) {
-            this.subprotocols = (subprotocols == null) ? new ArrayList<String>() : subprotocols;
+            this.subprotocols = (subprotocols == null) ? new ArrayList<>() : subprotocols;
             return this;
         }
 
@@ -314,7 +314,7 @@ public ServerEndpointConfig.Builder subprotocols(List<String> subprotocols) {
          * @return this builder instance.
          */
         public ServerEndpointConfig.Builder extensions(List<Extension> extensions) {
-            this.extensions = (extensions == null) ? new ArrayList<Extension>() : extensions;
+            this.extensions = (extensions == null) ? new ArrayList<>() : extensions;
             return this;
         }