question: public void write ( CharSequence csq ) throws IOException { if ( _byteBuffer == null ) throw new IOException ( "Writer closed" ) ; final int length = csq . length ( ) ; for ( int i = 0 ; i < length ; ) { char c = csq . charAt ( i ++ ) ; if ( c < 0x80 ) { _byteBuffer . put ( ( byte ) c ) ; } else { write ( c ) ; } } }
target:  Writes the specified character sequence.