question: public synchronized void write ( byte [ ] b , int off , int len ) throws IOException { ensureOpen ( ) ; if ( off < 0 || len < 0 || off > b . length - len ) { throw new IndexOutOfBoundsException ( ) ; } else if ( len == 0 ) { return ; } if ( current == null ) { throw new ZipException ( "no current ZIP entry" ) ; } ZipEntry entry = current . entry ; switch ( entry . method ) { case DEFLATED : super . write ( b , off , len ) ; break ; case STORED : written += len ; if ( written - locoff > entry . size ) { throw new ZipException ( "attempt to write past end of STORED entry" ) ; } out . write ( b , off , len ) ; break ; default : throw new ZipException ( "invalid compression method" ) ; } crc . update ( b , off , len ) ; }
target:  Writes an array of bytes to the current ZIP entry data. This method will block until all the bytes are written.