I have written this code to get the list of weeks for presnet and previous month. Weeks are taken from sunday to saturday. For the current year this code is working fine. But the problem is when the next year will be started, then the functionality of the code will change.

So Please anybody tell me how can I maintain the functionality of my code at the start of new year.
Thanks.

			

			import java.util.Date;
			

			import java.text.DateFormat;
			

			import java.util.Calendar;
			

			import java.util.ArrayList;
			

			import java.text.SimpleDateFormat;
			

			import java.text.ParseException;
			

			

			public class WeekFinder {
			

			private Calendar cal = null;
			

			private int yearThis;
			

			private int monthThis;
			

			private int dateThis;
			

			private int dayThis;
			

			

			private ArrayList weekendList = null;
			

			

			public WeekFinder() {
			

			

			cal = Calendar.getInstance();
			

			System.out.println("Today's date is :" +cal.getTime());
			

			yearThis = cal.get(Calendar.YEAR);
			

			System.out.println(yearThis);
			

			monthThis = cal.get(Calendar.MONTH);
			

			

			try{
			

			//Sets the date to the 1st day of the specified month and year
			

			if(monthThis == 0) {
			

			cal.setTime(new SimpleDateFormat("dd/MM/yyyy").parse("01/" + (monthThis +1) + "/" + yearThis));
			

			}else {
			

			cal.setTime(new SimpleDateFormat("dd/MM/yyyy").parse("01/" + monthThis + "/" + yearThis));
			

			}
			

			System.out.println("Inside try");
			

			}catch(java.text.ParseException e){
			

			System.err.println("Error parsing date: " + e.getMessage());
			

			e.printStackTrace();
			

			}
			

			

			weekendList = new ArrayList(53);
			

			System.out.println("New date is :" +cal.getTime());
			

			}
			

			

			public void findWeekends(){
			

			System.out.println("outside while");
			

			int count = 0;
			

			int sundayDate = 0;
			

			//The while loop ensures that you are only checking dates in the specified year
			

			while(cal.get(Calendar.YEAR) == yearThis){
			

			// The switch checks the day of the week for Mondays and Sundays
			

			switch(cal.get(Calendar.DAY_OF_WEEK)){
			

			case Calendar.SUNDAY:
			

			sundayDate = cal.get(Calendar.DATE);
			

			System.out.println(sundayDate);
			

			weekendList.add(cal.getTime());
			

			break;
			

			

			case Calendar.SATURDAY:
			

			if (sundayDate == 1){
			

			weekendList.add(cal.getTime());
			

			}else {
			

			if(count != 0) {
			

			weekendList.add(cal.getTime());
			

			}
			

			}
			

			count++;
			

			break;
			

			}
			

			// Increment the day of the year for the next iteration of the while loop
			

			cal.add(Calendar.DAY_OF_YEAR, 1);
			

			if((cal.get(Calendar.DATE) == 31) && (Calendar.SATURDAY == (cal.get(Calendar.DAY_OF_WEEK))) && (cal.get(Calendar.MONTH) == monthThis)) {
			

			weekendList.add(cal.getTime());
			

			break;
			

			}else if((cal.get(Calendar.DATE) == 30) && (Calendar.SATURDAY == (cal.get(Calendar.DAY_OF_WEEK))) && (cal.get(Calendar.MONTH) == monthThis)) {
			

			weekendList.add(cal.getTime());
			

			if(monthThis == 0 || monthThis == 2 || monthThis == 4 || monthThis == 6 || monthThis == 7 || monthThis == 9 || monthThis == 11) {
			

			cal.add(Calendar.DAY_OF_YEAR, 1);
			

			continue;
			

			}else {
			

			break;
			

			}
			

			}
			

			if((cal.get(Calendar.MONTH) == 1)){
			

			if((cal.get(Calendar.DATE) == 29) && (Calendar.SATURDAY == (cal.get(Calendar.DAY_OF_WEEK)))) {
			

			weekendList.add(cal.getTime());
			

			break;
			

			}else if((cal.get(Calendar.DATE) == 28) && (Calendar.SATURDAY == (cal.get(Calendar.DAY_OF_WEEK)))) {
			

			weekendList.add(cal.getTime());
			

			if((yearThis % 4 == 0) || (yearThis % 100 == 0) || (yearThis % 400 == 0)) {
			

			cal.add(Calendar.DAY_OF_YEAR, 1);
			

			continue;
			

			}else {
			

			break;
			

			}
			

			}
			

			}
			

			if(Calendar.SATURDAY == (cal.get(Calendar.DAY_OF_WEEK)) && (cal.get(Calendar.MONTH) > monthThis)) {
			

			weekendList.add(cal.getTime());
			

			break;
			

			}
			

			if((Calendar.SATURDAY == (cal.get(Calendar.DAY_OF_WEEK))) && (cal.get(Calendar.YEAR) > yearThis)){
			

			weekendList.add(cal.getTime());
			

			break;
			

			}
			

			}
			

			}
			

			

			// Convenience method which just displays the contents of the ArrayList to the console
			

			public void displayWeekends() {
			

			//SimpleDateFormat sdf = new SimpleDateFormat("EEE, MMM d, ''yy");
			

			String dateString = new String("");
			

			System.out.println(weekendList);
			

			for(int i = 0; i
			< weekendList.size(); i++){
			

			if (i % 2 == 1){
			

			System.out.print(" to ");
			

			}
			

			if (i % 2 == 0){
			

			System.out.println("");
			

			}
			

			dateString = DateFormat.getDateInstance(DateFormat.MEDIUM).format((Date)weekendList.get(i));
			

			System.out.print(dateString);
			

			}
			

			}
			

			

			public static void main(String[] args){
			

			// The program requires one argument of a year, so for example you could run the program with "java WeekendCalculator 2006"
			

			WeekFinder wf = new WeekFinder();
			

			wf.findWeekends();
			

			wf.displayWeekends();
			

			}
			

			}