Add example which start a server in a applet to show there is no issue anymore. Related to [#689]

example/src/main/java/io/netty/example/applet/AppletDiscardServer.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2012 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.example.applet;
+
+import io.netty.bootstrap.ServerBootstrap;
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelInboundByteHandlerAdapter;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.socket.SocketChannel;
+import io.netty.channel.socket.nio.NioEventLoopGroup;
+import io.netty.channel.socket.nio.NioServerSocketChannel;
+import io.netty.util.CharsetUtil;
+
+import javax.swing.JApplet;
+
+/**
+ * {@link JApplet} which starts up a Server that receive data and discard it.
+ */
+public class AppletDiscardServer extends JApplet {
+    private ServerBootstrap bootstrap;
+    @Override
+    public void init() {
+        try {
+            bootstrap = new ServerBootstrap();
+            bootstrap.group(new NioEventLoopGroup(), new NioEventLoopGroup()).channel(NioServerSocketChannel.class)
+                    .localAddress(9999).childHandler(new ChannelInitializer<SocketChannel>() {
+                @Override
+                public void initChannel(SocketChannel ch) throws Exception {
+                    ch.pipeline().addLast(new DiscardServerHandler());
+                }
+            });
+            ChannelFuture f = bootstrap.bind().sync();
+            f.channel().closeFuture().sync();
+        } catch (Exception ex) {
+            ex.printStackTrace();
+            throw new RuntimeException(ex);
+        }
+    }
+
+    @Override
+    public void destroy() {
+        super.destroy();
+        if (bootstrap != null) {
+            bootstrap.shutdown();
+        }
+    }
+
+    private static final class DiscardServerHandler extends ChannelInboundByteHandlerAdapter {
+
+        @Override
+        public void inboundBufferUpdated(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
+            System.out.println("Received: " + in.toString(CharsetUtil.UTF_8));
+            in.clear();
+        }
+
+        @Override
+        public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
+            cause.printStackTrace();
+            ctx.close();
+        }
+    }
+}