date for months

Posted on 2004-09-20
Medium Priority
Last Modified: 2010-03-31
given a month and year as string(say "September 2004"), i want to return an arraylist from 01.09.2004 till 30.09.2004

Question by:sangeetha
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
LVL 37

Expert Comment

ID: 12101174
>> arraylist from 01.09.2004 till 30.09.2004
Do you want an arraylist of Strings or of Dates?

Author Comment

ID: 12101194
i think anything is Ok...

request.setAttribute("dates", getDatum("September", "2004"));


private static ArrayList getDatum(String month, String year) {
            ArrayList list = new ArrayList();
                          // What to do here?
            return list;
am i right?
LVL 37

Expert Comment

ID: 12101224
By heart (so not guaranteed without typos):

List arrayList = new ArrayList();

SimpleDateFormat fmt = SimpleDateFormat("dd MMMM yyyy");
Date d = fmt.parse("1 " + month + " " + year);

Calendar cal = Calendar.getInstance();

boolean stop = false;

int thisMonth = cal.get(Calendar.MONTH);
while (!stop) {
   arrayList.add( cal.getTime() );
   cal.add(Calendar.DATE, 1);
   stop = ( thisMonth!=cal.get(Calendar.MOHTH) )

return arrayList;
Get real performance insights from real users

Key features:
- Total Pages Views and Load times
- Top Pages Viewed and Load Times
- Real Time Site Page Build Performance
- Users’ Browser and Platform Performance
- Geographic User Breakdown
- And more

LVL 35

Accepted Solution

TimYates earned 100 total points
ID: 12101237
   String str = "September 2004" ;
    SimpleDateFormat sdf = new SimpleDateFormat( "MMMMM yyyy" ) ;
    SimpleDateFormat sdf2 = new SimpleDateFormat( "dd.MM.yyyy" ) ;
    sdf.setLenient( true );
    Date month = sdf.parse( str ) ;
    Calendar cal = Calendar.getInstance() ;
    cal.setTime( month );
    int curr = cal.get( Calendar.MONTH ) ;
    int next = curr ;
    ArrayList al = new ArrayList() ;
    while( next == curr )
      al.add( sdf2.format( cal.getTime() ) ) ;
      cal.roll( Calendar.DAY_OF_YEAR, true );
      next = cal.get( Calendar.MONTH ) ;
    for( int i = 0 ; i < al.size() ; i++ )
      System.out.println( al.get( i ) ) ;
LVL 13

Expert Comment

ID: 12101278
Hi sangeetha,

static final String[] month={"january","february","march","april","may","june",

private static int getMonth(String s)
    for (int i=0;i<month.length;i++)
       if (month[i].equalsIgnoreCase(s)) return i+1;
    return -1;

private static int lm(int m,int a)
     if (m<11) return 31-((m^(m/5))&1);
     else return ( ((a%4)==0)&&( ((a%100)!=0) || ((a%400)==0) ) )?29:28;

private static String len2(int n)
     String t="0"+n;
     return t.substring(t.length()-2);

private static ArrayList getDatum(String month, String year) {

          int m=getMonth(month);
          if (m<0) return null; // invalid month name

          ArrayList list = new ArrayList();

          int len_month=lm(m,year);
          for (int d=1;d<=len_month;d++)
          return list;
LVL 13

Expert Comment

ID: 12101284
private static ArrayList getDatum(String month, String year) {

should be:

private static ArrayList getDatum(String month, String s_year) {
    int year=Integer.parseInt(s_year);
LVL 37

Expert Comment

ID: 12101485
Can you tell me what's wrong with my comment?

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Java had always been an easily readable and understandable language.  Some relatively recent changes in the language seem to be changing this pretty fast, and anyone that had not seen any Java code for the last 5 years will possibly have issues unde…
Are you developing a Java application and want to create Excel Spreadsheets? You have come to the right place, this article will describe how you can create Excel Spreadsheets from a Java Application. For the purposes of this article, I will be u…
Viewers will learn about the regular for loop in Java and how to use it. Definition: Break the for loop down into 3 parts: Syntax when using for loops: Example using a for loop:
This video teaches viewers about errors in exception handling.
Suggested Courses
Course of the Month10 days, 8 hours left to enroll

765 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question