Avoid unnecessary GenericHttpMessageConverter re-declaration

spring-web/src/main/java/org/springframework/http/converter/json/AbstractJackson2HttpMessageConverter.java

@@ -58,8 +58,7 @@ import org.springframework.util.TypeUtils;
  * @author Sebastien Deleuze
  * @since 4.1
  */
-public abstract class AbstractJackson2HttpMessageConverter extends AbstractGenericHttpMessageConverter<Object>
-		implements GenericHttpMessageConverter<Object> {
+public abstract class AbstractJackson2HttpMessageConverter extends AbstractGenericHttpMessageConverter<Object> {
 
 	public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");
 
@@ -71,19 +70,19 @@ public abstract class AbstractJackson2HttpMessageConverter extends AbstractGener
 
 	protected AbstractJackson2HttpMessageConverter(ObjectMapper objectMapper) {
 		this.objectMapper = objectMapper;
-		this.setDefaultCharset(DEFAULT_CHARSET);
+		setDefaultCharset(DEFAULT_CHARSET);
 	}
 
 	protected AbstractJackson2HttpMessageConverter(ObjectMapper objectMapper, MediaType supportedMediaType) {
 		super(supportedMediaType);
 		this.objectMapper = objectMapper;
-		this.setDefaultCharset(DEFAULT_CHARSET);
+		setDefaultCharset(DEFAULT_CHARSET);
 	}
 
 	protected AbstractJackson2HttpMessageConverter(ObjectMapper objectMapper, MediaType... supportedMediaTypes) {
 		super(supportedMediaTypes);
 		this.objectMapper = objectMapper;
-		this.setDefaultCharset(DEFAULT_CHARSET);
+		setDefaultCharset(DEFAULT_CHARSET);
 	}
 
 

spring-web/src/main/java/org/springframework/http/converter/json/GsonHttpMessageConverter.java

@@ -48,15 +48,14 @@ import org.springframework.util.Assert;
  * By default, it supports {@code application/json} and {@code application/*+json} with
  * {@code UTF-8} character set.
  *
- * <p>Tested against Gson 2.3; compatible with Gson 2.0 and higher.
+ * <p>Tested against Gson 2.6; compatible with Gson 2.0 and higher.
  *
  * @author Roy Clarkson
  * @since 4.1
  * @see #setGson
  * @see #setSupportedMediaTypes
  */
-public class GsonHttpMessageConverter extends AbstractGenericHttpMessageConverter<Object>
-		implements GenericHttpMessageConverter<Object> {
+public class GsonHttpMessageConverter extends AbstractGenericHttpMessageConverter<Object> {
 
 	public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");