Concat two ByteBuffers in Java -

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How can I collect two byte buffers in a bytebuffer?

The following does not work: 

  Bytebuffer BB = Bytebuffer.Olock (100); Bytebuff BB2 = Bitebuffer.Olocate (200); bb.allocate (200) .put (BB2); Println (bb.array () length.); The   
  BB  length is still  100 .   
 
 
 something like  
  BB = bytefuffer.overock (300). Put (BB) Input (BB2);   
 should work: To make the content of both buffers, make a buffer, and then use the relative put-methods to fill the first and second buffers. (The  put  method returns the method on which the method was called)

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