131 

   131 

   132     protected native void setTimeToLive(int ttl) throws IOException;

   132     protected native void setTimeToLive(int ttl) throws IOException;

   133 

   133 

   134     protected native int getTimeToLive() throws IOException;

   134     protected native int getTimeToLive() throws IOException;

   135 

   135 

   136     protected native void setTTL(byte ttl) throws IOException;

   137     protected native void setTTL(byte ttl) throws IOException;

   137 

   138 

   138     protected native byte getTTL() throws IOException;

   140     protected native byte getTTL() throws IOException;

   139 

   141 

   140     protected native void join(InetAddress inetaddr, NetworkInterface netIf)

   142     protected native void join(InetAddress inetaddr, NetworkInterface netIf)

   141         throws IOException;

   143         throws IOException;

   142 

   144