Parse ByteBuffer looking for whitespace

I have a By开发者_运维知识库teBuffer containing some data (chars to be exact). How can I parse it to get only starting bytes up to first whitespace character ?

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The simplest way it to step threw the ByteBuffer until you get a whitespace. e.g.

ByteBuffer buffer = 
StringBuilder sb = new StringBuilder();
char ch;
while(buffer.remaining() > 0 && !Character.isWhitespace(ch = (char) buffer.get()))
    sb.append(ch);

There are more efficient ways but that is perhaps the simplest.

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Use the getChar() method and it will pull out the next char for you. Check it and once you see a whitespace character. Stop reading it.