/** * Sets the dictionary which should be used in the deflate process. The dictionary should be a * byte array containing strings that are likely to occur in the data which should be compressed. * The dictionary is not stored in the compressed output, only a checksum. To decompress the * output you need to supply the same dictionary again. * * @param dict the dictionary. * @param offset an offset into the dictionary. * @param length the length of the dictionary. * @exception IllegalStateException if setInput () or deflate () were already called or another * dictionary was already set. */ public void setDictionary(byte[] dict, int offset, int length) { if (state != INIT_STATE) throw new IllegalStateException(); state = SETDICT_STATE; engine.setDictionary(dict, offset, length); }