Specifies the encoding of the generated HTML files. The name should be a preferred MIME name (canonical name) as given in the IANA Registry.

If the encoding is not specified, the Java machine's default encoding will be used. (Its name appears as the default value of this option.)

Some frequently used encodings are shown in the following table, which you could use as reference:
Encoding Canonical Name
Arabic (Windows) Windows-1256
Arabic (ISO) ISO-8859-6
Baltic (ISO) ISO-8859-4
Baltic (Windows) Windows-1257
Central European (DOS) IBM852
Central European (ISO) ISO-8859-2
Central European (Windows) Windows-1250
Chinese Simplified (GB2312) gb2312
Chinese Simplified (HZ) HZ-GB-2312
Chinese Traditional (Big5) Big5
Cyrillic (DOS) Cp866
Cyrillic (ISO) ISO-8859-5
Cyrillic (KOI8-R) KOI8-R
Cyrillic (KOI8-U) KOI8-U
Cyrillic (Windows) Windows-1251
English US-ASCII
Greek (ISO) ISO-8859-7
Greek (Windows) Windows-1253
Hebrew (ISO) ISO-8859-8
Hebrew (Windows) Windows-1255
Japanese (EUC) EUC-JP
Japanese (JIS-Allow 1 byte Kana) ISO-2022-JP
Japanese (Shift-JIS) Shift_JIS
Korean KS_C_5601-1987
Korean ISO-2022-KR
Korean (EUC) EUC-KR
Latin 9 (ISO) ISO-8859-15
Thai (Windows) Windows-874
Turkish (ISO) ISO-8859-9
Turkish (Windows) Windows-1254
8-bit Unicode Transformation Format UTF-8
16-bit Unicode Transformation Format, big-endian byte order UTF-16BE
16-bit Unicode Transformation Format, little-endian byte order UTF-16LE
16-bit Unicode Transformation Format, byte order specified by a mandatory initial byte-order mark UTF-16
Vietnamese (Windows) Windows-1258
Western European (ISO) ISO-8859-1
Western European (Windows) Windows-1252