Fix imports order

core/src/main/java/org/apache/spark/network/netty/FileClientChannelInitializer.java

@@ -21,7 +21,6 @@ import io.netty.channel.ChannelInitializer;
 import io.netty.channel.socket.SocketChannel;
 import io.netty.handler.codec.string.StringEncoder;
 
-
 class FileClientChannelInitializer extends ChannelInitializer<SocketChannel> {
 
   private final FileClientHandler fhandler;

core/src/main/java/org/apache/spark/network/netty/FileServer.java

@@ -17,6 +17,8 @@
 
 package org.apache.spark.network.netty;
 
+import java.net.InetSocketAddress;
+
 import io.netty.bootstrap.ServerBootstrap;
 import io.netty.channel.ChannelFuture;
 import io.netty.channel.ChannelOption;
@@ -26,9 +28,6 @@ import io.netty.channel.socket.oio.OioServerSocketChannel;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.net.InetSocketAddress;
-
-
 /**
  * Server that accept the path of a file an echo back its content.
  */

core/src/main/java/org/apache/spark/network/netty/FileServerChannelInitializer.java

@@ -23,7 +23,6 @@ import io.netty.handler.codec.DelimiterBasedFrameDecoder;
 import io.netty.handler.codec.Delimiters;
 import io.netty.handler.codec.string.StringDecoder;
 
-
 class FileServerChannelInitializer extends ChannelInitializer<SocketChannel> {
 
   PathResolver pResolver;