question: returns true , if the audio device is opened , false otherwise . concode_field_sep boolean opened concode_elem_sep int BUFFER_SIZE concode_elem_sep boolean mute concode_elem_sep int volume concode_elem_sep SourceDataLine sourceDataLine concode_elem_sep boolean playing concode_field_sep void play concode_elem_sep void setMute concode_elem_sep boolean isReady concode_elem_sep void setVolume concode_elem_sep void write concode_elem_sep void close concode_elem_sep SourceDataLine getSourceDataLine concode_elem_sep void open concode_elem_sep void pause
target: boolean function ( ) { return opened ; }