Java Calendar class is an abstract class that provides methods for converting date between a specific instant in time and a set of calendar fields such as MONTH, YEAR, HOUR, etc. It inherits Object class and implements the Comparable interface.
Let's see the declaration of java.util.Calendar class.
No |
Method |
Description |
1. |
public void add(int field, int amount) |
Adds the specified (signed) amount of time to the given calendar field. |
2. |
public boolean after (Object when) |
The method Returns true if the time represented by this Calendar is after the time represented by when Object. |
3. |
public boolean before(Object when) |
The method Returns true if the time represented by this Calendar is before the time represented by when Object. |
4. |
public final void clear(int field) |
Set the given calendar field value and the time value of this Calendar undefined. |
5. |
public Object clone() |
Clone method provides the copy of the current object. |
6. |
public int compareTo(Calendar anotherCalendar) |
The compareTo() method of Calendar class compares the time values (millisecond offsets) between two calendar object. |
7. |
protected void complete() |
It fills any unset fields in the calendar fields. |
8. |
protected abstract void computeFields() |
It converts the current millisecond time value time to calendar field values in fields[]. |
9. |
protected abstract void computeTime() |
It converts the current calendar field values in fields[] to the millisecond time value time. |
10. |
public boolean equals(Object object) |
The equals() method compares two objects for equality and Returns true if they are equal. |
11. |
public int get(int field) |
In get() method fields of the calendar are passed as the parameter, and this method Returns the value of fields passed as the parameter. |
12. |
public int getActualMaximum(int field) |
Returns the Maximum possible value of the calendar field passed as the parameter to getActualMaximum() method. |
13. |
public int getActualMinimum(int field) |
Returns the Minimum possible value of the calendar field passed as parameter to getActualMinimum() methot. |
14. |
public static Set<String> getAvailableCalendarTypes() |
Returns a set which contains string set of all available calendar type supported by Java Runtime Environment. |
15. |
public static Locale[] getAvailableLocales() |
Returns an array of all locales available in java runtime environment. |
16. |
public String getCalendarType() |
Returns in string all available calendar type supported by Java Runtime Environment. |
17. |
public String getDisplayName(int field, int style, Locale locale) |
Returns the String representation of the calendar field value passed as the parameter in a given style and local. |
18. |
public Map<String,Integer> getDisplayNames(int field, int style, Locale locale) |
Returns Map representation of the calendar field value passed as the parameter in a given style and local. |
19. |
public int getFirstDayOfWeek() |
Returns the first day of the week in integer form. |
20. |
public abstract int getGreatestMinimum(int field) |
This method returns the highest minimum value of Calendar field passed as the parameter. |
21. |
public static Calendar getInstance() |
This method is used with calendar object to get the instance of calendar according to current time zone set by java runtime environment |
22. |
public abstract int getLeastMaximum(int field) |
Returns smallest value from all maximum value for the field specified as the parameter to the method. |
23. |
public abstract int getMaximum(int field) |
This method is used with calendar object to get the maximum value of the specified calendar field as the parameter. |
24. |
public int getMinimalDaysInFirstWeek() |
Returns required minimum days in integer form. |
25. |
public abstract int getMinimum(int field) |
This method is used with calendar object to get the minimum value of specified calendar field as the parameter. |
26. |
public final Date getTime() |
This method gets the time value of calendar object and Returns date. |
27. |
public long getTimeInMillis() |
Returns the current time in millisecond. This method has long as return type. |
28. |
public TimeZone getTimeZone() |
This method gets the TimeZone of calendar object and Returns a TimeZone object. |
29. |
public int getWeeksInWeekYear() |
Return total weeks in week year. Weeks in week year is returned in integer form. |
30. |
public int getWeekYear() |
This method gets the week year represented by current Calendar. |
31. |
public int hashCode() |
All other classes in Java overload hasCode() method. This method Returns the hash code for calendar object. |
32. |
protected final int internalGet(int field) |
This method returns the value of the calendar field passed as the parameter. |
33. |
Public boolean isLenient() |
Return Boolean value. True if the interpretation mode of this calendar is lenient; false otherwise. |
34. |
public final boolean isSet(int field) |
This method checks if specified field as the parameter has been set or not. If not set then it returns false otherwise true. |
35. |
public boolean isWeekDateSupported() |
Checks if this calendar supports week date. The default value is false. |
36. |
public abstract void roll(int field, boolean up) |
This method increase or decrease the specified calendar field by one unit without affecting the other field |
37. |
public void set(int field, int value) |
Sets the specified calendar field by the specified value. |
38. |
public void setFirstDayOfWeek(int value) |
Sets the first day of the week. The value which is to be set as the first day of the week is passed as parameter. |
39. |
public void setMinimalDaysInFirstWeek(int value) |
Sets the minimal days required in the first week. The value which is to be set as minimal days in first week is passed as parameter. |
40. |
public final void setTime(Date date) |
Sets the Time of current calendar object. A Date object id passed as the parameter. |
41. |
public void setTimeInMillis(long millis) |
Sets the current time in millisecond. |
42. |
public void setTimeZone(TimeZone value) |
Sets the TimeZone with passed TimeZone value (object) as the parameter. |
43. |
public void setWeekDate(int weekYear, int weekOfYear, int dayOfWeek) |
Sets the current date with specified integer value as the parameter. These values are weekYear, weekOfYear and dayOfWeek. |
44. |
public final Instant toInstant() |
The toInstant() method convert the current object to an instant. |
45. |
public String toString() |
Returns string representation of the current object. |