return whether the chunk contains any data . concode_field_sep int TYPE_PROFILE concode_elem_sep byte[] data concode_elem_sep int TYPE_DATA concode_elem_sep int TYPE_TIME concode_elem_sep int crc concode_elem_sep int TYPE_PHYS concode_elem_sep int TYPE_HEADER concode_elem_sep int TYPE_GAMMA concode_elem_sep int TYPE_PALETTE concode_elem_sep int TYPE_END concode_elem_sep int type concode_elem_sep long[] crcTable concode_field_sep byte[] getInt concode_elem_sep int calcCRC concode_elem_sep PNGChunk readChunk concode_elem_sep int getType concode_elem_sep PNGChunk getChunk concode_elem_sep String toString concode_elem_sep void writeChunk concode_elem_sep boolean isEssentialChunk concode_elem_sep boolean isValidChunk
boolean function ( ) { return ( data . length == 0 ) ; }