Using Joda Date & Time API to parse multiple formats

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You can create multiple parsers and add them to the builder by using DateTimeFormatterBuilder.append method:

DateTimeParser[] parsers = { 
        DateTimeFormat.forPattern( "yyyy-MM-dd HH" ).getParser(),
        DateTimeFormat.forPattern( "yyyy-MM-dd" ).getParser() };
DateTimeFormatter formatter = new DateTimeFormatterBuilder().append( null, parsers ).toFormatter();

DateTime date1 = formatter.parseDateTime( "2010-01-01" );
DateTime date2 = formatter.parseDateTime( "2010-01-01 01" );

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