Java SimpleDateFormat returning wrong value in Date object

问题

I'm trying to parse a string to get a Date object, but it's always returning Sun. December 30, 2012 for the date. Does anyone have any ideas on what I'm doing wrong?

I was using the same code using strings in YYYY-MM-dd format and it worked just fine, so I'm not sure why switching to this format is causing issues.

 public static Date getDateObjFromStr(String dateStr)
{
    DateFormat formatter = new SimpleDateFormat("MM/dd/YYYY");
    Date dateObj;
    try {
        dateObj = formatter.parse(dateStr);
        return dateObj;
    } catch(Exception e) {
        return null;
    }
}

回答1:

Case-sensitive

Uppercase Y represents week-based year.

Try using lowercase y instead

DateFormat formatter = new SimpleDateFormat("MM/dd/yyyy");

来源：https://stackoverflow.com/questions/19849087/java-simpledateformat-returning-wrong-value-in-date-object