给你个比较全的关于时间的操作的东西–

import java.text.DateFormat;
import java.util.*;

public class jspCalendar {
    Calendar  calendar = null;

http://www.gaodaima.com/40135.html给你个比较全的关于时间的操作的东西–

    public jspCalendar() {
    calendar = Calendar.getInstance();
    Date trialTime = new Date();
    calendar.setTime(trialTime);
    }

    public int getYear() {
    return calendar.get(Calendar.YEAR);
    }
    
    public String getMonth() {
    int m = getMonthInt();
    String[] months = new String [] { "January", "February", "March",
                    "April", "May", "June",
                    "July", "August", "September",
                    "October", "November", "December" };
    if (m > 12)
        return "Unknown to Man";
    
    return months[m – 1];

    }

    public String getDay() {
    int x = getDayOfWeek();
    String[] days = new String[] {"Sunday", "Monday", "Tuesday", "Wednesday",
                      "Thursday", "Friday", "Saturday"};

    if (x > 7)
        return "Unknown to Man";

    return days[x – 1];

    }
    
    public int getMonthInt() {
    return 1 + calendar.get(Calendar.MONTH);
    }

    public String getDate() {
    return getMonthInt() + "/" + getDayOfMonth() + "/" +  getYear();

    }

    public String getTime() {
    return getHour() + ":" + getMinute() + ":" + getSecond();
    }

    public int getDayOfMonth() {
    return calendar.get(Calendar.DAY_OF_MONTH);
    }

    public int getDayOfYear() {
    return calendar.get(Calendar.DAY_OF_YEAR);
    }

    public int getWeekOfYear() {
    return calendar.get(Calendar.WEEK_OF_YEAR);
    }

    public int getWeekOfMonth() {
    return calendar.get(Calendar.WEEK_OF_MONTH);
    }

    public int getDayOfWeek() {
    return calendar.get(Calendar.DAY_OF_WEEK);
    }
     
    public int getHour() {
    return calendar.get(Calendar.HOUR_OF_DAY);
    }
    
    public int getMinute() {
    return calendar.get(Calendar.MINUTE);
    }

    public int getSecond() {
    return calendar.get(Calendar.SECOND);
    }

    public static void main(String args[]) {
    JspCalendar db = new JspCalendar();
    p("date: " + db.getDayOfMonth());
    p("year: " + db.getYear());
    p("month: " + db.getMonth());
    p("time: " + db.getTime());
    p("date: " + db.getDate());
    p("Day: " + db.getDay());
    p("DayOfYear: " + db.getDayOfYear());
    p("WeekOfYear: " + db.getWeekOfYear());
    p("era: " + db.getEra());
    p("ampm: " + db.getAMPM());
    p("DST: " + db.getDSTOffset());
    p("ZONE Offset: " + db.getZoneOffset());
    p("TIMEZONE: " + db.getUSTimeZone());
    }

    private static void p(String x) {
    System.out.println(x);
    }

    public int getEra() {
    return calendar.get(Calendar.ERA);
    }

    public String getUSTimeZone() {
    String[] zones = new String[] {"Hawaii", "Alaskan", "Pacific",
                       "Mountain", "Central", "Eastern"};
    
    return zones[10 + getZoneOffset()];
    }

    public int getZoneOffset() {
    return calendar.get(Calendar.ZONE_OFFSET)/(60*60*1000);
    }

    public int getDSTOffset() {
    return calendar.get(Calendar.DST_OFFSET)/(60*60*1000);
    }

    
    public int getAMPM() {
    return calendar.get(Calendar.AM_PM);
    }
}

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