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Samebug tips

  1. ,
    Expert tip

    A few things cause this exception:
    1) Check if you have all jars and if they're in the correct path.
    2) Your classpath might be broken, you can define it in the command line with java -cp yourClassPath or at your IDE if you're using one.

  2. ,

    you can change your scala version to 2.11.11

Solutions on the web

java.lang.NoClassDefFoundError: io/netty/buffer/ByteBufUtil$HexUtil at io.netty.buffer.ByteBufUtil.hexDump( at at at java.lang.String.valueOf( at java.lang.StringBuilder.append( at io.netty.bootstrap.ServerBootstrap$ServerBootstrapAcceptor.forceClose( at io.netty.bootstrap.ServerBootstrap$ServerBootstrapAcceptor.channelRead( at at at at$HeadContext.channelRead( at at at at$ at at at at at io.netty.util.concurrent.SingleThreadEventExecutor$ at by: java.lang.ClassNotFoundException: io.netty.buffer.ByteBufUtil$HexUtil at at java.lang.ClassLoader.loadClass( at sun.misc.Launcher$AppClassLoader.loadClass( at java.lang.ClassLoader.loadClass( ... 21 more