Calendar to make a daily judgment in a time period

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Question: How does Java get all the weeks in the specified time period, and what is the weekly geometric date for each day of the week?

The answers are as follows:

Import Java.text.DateFormatSymbols;
Import Java.util.Calendar;
Import Java.util.GregorianCalendar;

public class Test {

/**
* @param args
*/
public static void Main (string[] args) {
  
Calendar c_begin = new GregorianCalendar ();
Calendar c_end = new GregorianCalendar ();
DateFormatSymbols DFS = new DateFormatSymbols ();
string[] weeks = dfs.getweekdays ();
     
C_begin.set (2010, 3, 2); Calendar month from 0-11, so April is 3.
C_end.set (2010, 4, 20); Calendar month from 0-11, so May is 4.

int count = 1;
C_end.add (calendar.day_of_year, 1); The end date is rolled down one day to include the last day
     
while (C_begin.before (c_end)) {
System.out.println ("+count+", "Sunday period:" +new java.sql.Date (C_begin.gettime (). GetTime ()) + "," +weeks[c_begin.get ( Calendar.day_of_week)]);

if (C_begin.get (Calendar.day_of_week) ==calendar.sunday) {
count++;
}
C_begin.add (calendar.day_of_year, 1);
}
     
}
}

Calendar to make a daily judgment in a time period