Determining the Number of Days in a Month

This section will show the way of counting the number of days of a month in the specified year.

Determining the Number of Days in a Month

This section will show the way of counting the number of days of a month in the specified year.

Determining the Number of Days in a Month

Determining the Number of Days in a Month   This section will show the way of counting the number of days of a month in the specified year. Following program takes the year as input through the keyboard and shows the number of days in the February month of the mentioned year if the year is valid other it will show the error message and terminate the program. Code Description: GregorianCalendar(year, Calendar.FEBRUARY, 1): Above is the constructor of the GregorianCalendar class which create an instance for that. Year and month are specified in the constructor to create instance for finding the number of days in that month of the specified year. Here, the constructor takes three arguments as follows: First is the year.Second is the month (February).And third is the initial date value.Calendar.getActualMaximum(Calendar.DAY_OF_MONTH): Above method finds and returns the maximum date value in the specified month of the specific year. It returns a integer value. Here is the code of the program: import java.util.*; import java.io.*; public class GettingDaysInMonth{   public static void main(String[] args) throws IOException{   int year = 1;   BufferedReader in = new BufferedReader(new InputStreamReader(System.in));   System.out.print("Enter year : ");   try{   year = Integer.parseInt(in.readLine());   if (year < 1900 || year > 2100){   System.out.println("Please enter year greater than 1900  and less than 2100.");   System.exit(0);   }   }   catch(NumberFormatException ne){   System.out.print(ne.getMessage() + " is not a valid entry.");   System.out.println("Please enter a four digit number.");   System.exit(0);   }   Calendar cal = new GregorianCalendar(year, Calendar.FEBRUARY, 1);   int days = cal.getActualMaximum(Calendar.DAY_OF_MONTH);   System.out.print("Number of days : " + days);   } } Download this example.

Tutorials

  1. Java util package Examples
  2. Java Util Package - Utility Package of Java
  3. Generating Random Number
  4. Breaking the String into Words
  5. Listing all available Locales
  6. Setting the default Locale
  7. Associate a value with an object
  8. Comparing Arrays
  9. Shuffling the Element of a List or Array
  10. Collections Framework
  11. Collection Iterate Example
  12. Converting Collection to an Array
  13. Converting an Array to a Collection
  14. Implement the Queue in Java
  15. Implementing a Stack in Java
  16. Implementing a Least-Recently-Used(LRU) Cache
  17. Creating a Copy of a Collection
  18. Making a Collection Read-Only
  19. Sorting elements of a Collection
  20. Creating a Hash Table
  21. Finding an Element in a Sorted Array
  22. Read the Key-Value of Property File in Java
  23. Get All Keys and Values of the Properties files in Java
  24. Write the Keys and Values of the Properties files in Java
  25. Scheduling a Timer Task
  26. Getting the Current Time
  27. Getting Information of All Available Time Zones
  28. Getting the current date
  29. Determining the Number of Days in a Month
  30. Comparing Dates in Java
  31. Determining the actual age from date of birth in Java
  32. Determining If a Year is a Leap Year in Java
  33. Determining the Day-of-Week for a Particular Date
  34. What is a JAR file in Java
  35. Creating a JAR file in Java
  36. Viewing contents of a JAR File
  37. Listing the Main Attributes in a JAR File Manifest
  38. Creating a ZIP file in Java
  39. Listing Contents of a ZIP File
  40. Unzip a ZIP File