Github user PascalSchumacher commented on the issue: https://github.com/apache/commons-lang/pull/329 When using Java 11 the following test failures occur: ``` [ERROR] Failures: [ERROR] FastDateFormat_ParserTest>FastDateParserTest.testLocales_LongNoEra_AD:303->FastDateParserTest.testLocales:341 Locale zh_TW failed with yyyy/MMMM/dddd/hhhh/mmmm/ss/aaaa/EEEE era AD java.text.ParseException: Unparseable date: 2003/äºæ/0010/0012/0000/00/ä¸å/ææä¸ [ERROR] FastDateFormat_ParserTest>FastDateParserTest.testLocales_LongNoEra_BC:308->FastDateParserTest.testLocales:341 Locale zh_TW failed with yyyy/MMMM/dddd/hhhh/mmmm/ss/aaaa/EEEE era BC java.text.ParseException: Unparseable date: 2003/äºæ/0010/0012/0000/00/ä¸å/ææå [ERROR] FastDateFormat_ParserTest>FastDateParserTest.testLocales_Long_AD:283->FastDateParserTest.testLocales:341 Locale zh_TW failed with GGGG/yyyy/MMMM/dddd/hhhh/mmmm/ss/aaaa/EEEE era AD java.text.ParseException: Unparseable date: 西å /2003/äºæ/0010/0012/0000/00/ä¸å/ææä¸ [ERROR] FastDateFormat_ParserTest>FastDateParserTest.testLocales_Long_BC:288->FastDateParserTest.testLocales:341 Locale zh_TW failed with GGGG/yyyy/MMMM/dddd/hhhh/mmmm/ss/aaaa/EEEE era BC java.text.ParseException: Unparseable date: 西å å/2003/äºæ/0010/0012/0000/00/ä¸å/ææå [ERROR] FastDateFormat_ParserTest>FastDateParserTest.testTzParses:275 tz:America/New_York locale:Norwegian Nynorsk expected:<Thu Feb 10 05:00:00 UTC 2000> but was:<Wed Feb 09 21:00:00 UTC 2000> [ERROR] FastDateParserTest.testLocales_LongNoEra_AD:303->testLocales:341 Locale zh_TW failed with yyyy/MMMM/dddd/hhhh/mmmm/ss/aaaa/EEEE era AD java.text.ParseException: Unparseable date: 2003/äºæ/0010/0012/0000/00/ä¸å/ææä¸ [ERROR] FastDateParserTest.testLocales_LongNoEra_BC:308->testLocales:341 Locale zh_TW failed with yyyy/MMMM/dddd/hhhh/mmmm/ss/aaaa/EEEE era BC java.text.ParseException: Unparseable date: 2003/äºæ/0010/0012/0000/00/ä¸å/ææå [ERROR] FastDateParserTest.testLocales_Long_AD:283->testLocales:341 Locale zh_TW failed with GGGG/yyyy/MMMM/dddd/hhhh/mmmm/ss/aaaa/EEEE era AD java.text.ParseException: Unparseable date: 西å /2003/äºæ/0010/0012/0000/00/ä¸å/ææä¸ [ERROR] FastDateParserTest.testLocales_Long_BC:288->testLocales:341 Locale zh_TW failed with GGGG/yyyy/MMMM/dddd/hhhh/mmmm/ss/aaaa/EEEE era BC java.text.ParseException: Unparseable date: 西å å/2003/äºæ/0010/0012/0000/00/ä¸å/ææå [ERROR] FastDateParserTest.testTzParses:275 tz:America/New_York locale:Norwegian Nynorsk expected:<Thu Feb 10 05:00:00 UTC 2000> but was:<Wed Feb 09 21:00:00 UTC 2000> [ERROR] Errors: [ERROR] FastDateFormat_ParserTest>FastDateParserTest.testParses:251->FastDateParserTest.validateSdfFormatFdpParseEquality:227 » Parse [ERROR] FastDateParserTest.testParses:251->validateSdfFormatFdpParseEquality:227 » Parse ```
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