看一看https://docs.oracle.com/javase/8/docs/api/java/text/dateformat.html 以及相关的课程。这可以生成一个字符串，其中只包含给定“date”中的“year”字段。

试试这个
日期=新日期（）；localdate localdate=date.toinstant（）.atzone（zoneid.systemdefault（））.tolocaldate（）；int year=localdate.getyear（）；
这是菲克斯

Calendar calendar = Calendar.getInstance();
calendar.setTime(new Date());
System.out.println(calendar.get(Calendar.YEAR));

将新日期替换为您希望从中获取年份的日期。

我可以想出三种方法从一个 Date 对象，但避免使用不推荐的方法。其中两种方法使用其他对象( Calendar 以及 SimpleDateFormat )，第三个解析 .toString() 的 Date 对象（并且该方法未被弃用）。这个 .toString() 可能是特定于语言环境的，在其他语言环境中这种方法可能会有问题，但我将假设（著名的遗言）年份始终是4位数字的唯一序列。还可以理解特定的语言环境并使用其他解析方法。例如，标准美式英语将年份放在末尾（例如，“tue mar 04 19:20:17 mst 2014”），可以使用 .lastIndexOf(" ") 上 .toString() .

/**
 * Obtains the year by converting the date .toString() and
 * finding the year by a regular expression; works by assuming that
 * no matter what the locale, only the year will have 4 digits
 */
public static String getYearByRegEx(Date dte) throws IllegalArgumentException
{
    String year = "";

    if (dte == null) {
        throw new IllegalArgumentException("Null date!");
    }

    // match only a 4 digit year
    Pattern yearPat = Pattern.compile("^.*([\\d]{4}).*$");

    // convert the date to its String representation; could pass
    // this directly, but I prefer the intermediary variable for
    // potential debugging
    String localDate = dte.toString();

    // obtain a matcher, and then see if we have the expected value
    Matcher match = yearPat.matcher(localDate);
    if (match.matches() && match.groupCount() == 1) {
        year = match.group(1);
    }

    return year;
}

/**
 * Constructs a Calendar object, and then obtains the year
 * by using the Calendar.get(...) method for the year.
 */
public static String getYearFromCalendar(Date dte) throws IllegalArgumentException
{
    String year = "";

    if (dte == null) {
        throw new IllegalArgumentException("Null date!");
    }

    // get a Calendar
    Calendar cal = Calendar.getInstance();

    // set the Calendar to the specific date; the reason why
    // Calendar is deprecated is this mutability
    cal.setTime(dte);

    // get the year using the .get method, and convert to a String
    year = String.valueOf(cal.get(Calendar.YEAR));

    return year;
}

/**
 * Uses the SimpleDateFormat with a format for only a year.
 */
public static String getYearByFormatting(Date dte)
        throws IllegalArgumentException
{
    String year = "";

    if (dte == null) {
        throw new IllegalArgumentException("Null date!");
    }

    // set a format only for the year
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy");

    // format the date; the result is the year
    year = sdf.format(dte);

    return year;        
}

public static void main(String[] args)
{
    Calendar cal = Calendar.getInstance();
    cal.set(2014, 
            Calendar.MARCH,
            04);

    Date dte = cal.getTime();

    System.out.println("byRegex: "+ getYearByRegEx(dte));
    System.out.println("from Calendar: "+ getYearFromCalendar(dte));
    System.out.println("from format: " + getYearByFormatting(dte));
}

这三种方法都返回基于测试输入的预期输出。