The number of valid bytes in the buffer. This value is always in the range {@code 0} through {@code buf.length}; elements {@code buf[0]} through {@code buf[count-1]} contain valid byte data.
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The number of valid bytes in the buffer. This value is always in the range {@code 0} through {@code buf.length}; elements {@code buf[0]} through {@code buf[count-1]} contain valid byte data.