一个比较全的日期操作例子Calendar

2024-07-21 02:14:13

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import java.text.dateformat; import java.util.*;

public class jspcalendar {     calendar calendar = null;

    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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