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  • GregorianCalendar类

    GregorianCalendar类:
    GregorianCalendar():构造一个日历对象,用来表示默认地区,默认时区的当前时间
    GregorianCalendar(int year, int month, int day)
    GregorianCalendar(int year, int month, int day, int hour, int minutes, int seconds)
    int get(int field)
    void set(int field, int value)
    void set(int year, int month, int day)
    void set(int year, int month, int day, int hour, int minutes, int seconds)
    void add(int field, int amount)
    int getFirstDayOfWeek()
    void setTime(Date time)
    Date getTime()
    ----------------
    DateFormatSymbols类
    获取当前地区的星期几或月份的名称
    String[] getShortWeekdays()
    Stirng[] getShortMonths()
    String[] getWeekdays()
    String[] getMonths()
     
     1 import java.text.DateFormatSymbols;
     2 import java.util.Calendar;
     3 import java.util.GregorianCalendar;
     4 
     5 
     6 public class CalendarTest {
     7 
     8     /**
     9      * @param args
    10      */
    11     
    12     /*
    13      * GregorianCalendar类
    14      */    
    15     public static void main(String[] args) {
    16         // TODO Auto-generated method stub0
    17         
    18         //construct d as current date
    19         GregorianCalendar d = new GregorianCalendar();
    20         
    21         int today = d.get(Calendar.DAY_OF_MONTH);
    22         int month = d.get(Calendar.MONTH);
    23         
    24         //set d to start date of the month
    25         d.set(Calendar.DAY_OF_MONTH, 1);
    26         
    27         int weekday = d.get(Calendar.DAY_OF_WEEK);
    28         
    29         //get first day of week (Sunday in the U.S.)
    30         int firstDayOfWeek = d.getFirstDayOfWeek();
    31         
    32         //determine the required indentation for the first line
    33         int indent = 0;
    34         while(weekday != firstDayOfWeek)
    35         {
    36             indent++;
    37             d.add(Calendar.DAY_OF_MONTH,-1);
    38             weekday = d.get(Calendar.DAY_OF_WEEK);
    39         }
    40         
    41         //print weekday names;
    42         String[] weekdayNames = new DateFormatSymbols().getShortWeekdays();
    43         do
    44         {
    45             System.out.println(weekdayNames[weekday]);
    46             d.add(Calendar.DAY_OF_MONTH,1);
    47             weekday = d.get(Calendar.DAY_OF_WEEK);
    48         }while(weekday != firstDayOfWeek);
    49         System.out.println();
    50         for(int i =1;i<indent;i++)
    51         {
    52             System.out.print("  ");
    53         }
    54         d.set(Calendar.DAY_OF_MONTH, 1);
    55         do{
    56             //print day
    57             int day = d.get(Calendar.DAY_OF_MONTH);
    58             System.out.print(day);
    59             
    60             //mark current day with *
    61             if(day == today) System.out.println("*");
    62             else System.out.println(" ");
    63             
    64             //advance d to the next day
    65             d.add(Calendar.DAY_OF_WEEK,1);
    66             
    67             //start a new line at the start of the week
    68             if(weekday == firstDayOfWeek) System.out.println();
    69         }while (d.get(Calendar.MONTH) == month);
    70         //the loop exits when d is day 1 of the next month
    71         
    72         //print final end of line if necessary
    73         if(weekday != firstDayOfWeek) System.out.println();
    74         
    75     }
    76 
    77 }
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  • 原文地址:https://www.cnblogs.com/linst/p/4966533.html
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