Java Calendar clear() Method

The java.util.Calendar.clear() method sets the given calendar field value and the time value of this Calendar undefined. A Calendar implementation class may use default field values for date and time calculations.

Syntax

Parameter

Field - calendar field to set as undefined.

Returns

This method does not return any value.

Throws

Example 1

import java.util.Calendar;
public class CalendarClearExample1 {    
   public static void main(String[] args) {
      // create a calendar
       Calendar cal = (Calendar) Calendar.getInstance();
      // display the current date and time
      System.out.println("Current Calendar Date: " + cal.getTime());
      // use clear method to set year as undefined.
       cal.clear(Calendar.YEAR);
      // print the result
     System.out.println("The calendar shows : " + cal.getTime());      
   }
}

Test it Now

Output:

Current Calendar Date: Mon Jul 30 06:35:54 PDT 2018
The calendar shows : Thu Jul 30 06:35:54 PDT 1970

Example 2

import java.util.Calendar;
public class CalendarclearExample2 {   
 public static void main(String[] args) {
      // create a calendar
   Calendar cal = (Calendar) Calendar.getInstance();
      // display the current date and time
      System.out.println("Current Calendar Date: " + cal.getTime());      
      // use clear method to set month as undefined.
      cal.clear(Calendar.MONTH);
      // print the result
      System.out.println("The calendar shows : " + cal.getTime());
   }
}

Test it Now

Output:

Current Calendar Date: Mon Jul 30 06:39:17 PDT 2018
The calendar shows : Tue Jan 30 06:39:17 PST 2018

Example 3

import java.util.Calendar;
public class CalendarClearExample3 {   
 public static void main(String[] args) {
      // create a calendar
      Calendar cal = (Calendar) Calendar.getInstance();
      // display the current date and time
      System.out.println("Current Calendar Date: " + cal.getTime());     
      // use clear method to set month as undefined.
      cal.clear(Calendar.DAY_OF_MONTH);
      // print the result
      System.out.println("The calendar shows : " + cal.getTime());      
      cal.clear(Calendar.HOUR);
      cal.clear(Calendar.MINUTE);
      cal.clear(Calendar.SECOND);
      // print the result
      System.out.println("The calendar shows : " + cal.getTime());
   }
}

Test it Now

Output:

Current Calendar Date: Mon Jul 30 06:45:15 PDT 2018
The calendar shows : Mon Jul 30 06:45:15 PDT 2018
The calendar shows : Mon Jul 30 06:00:00 PDT 2018

Example 4

import java.util.Calendar;
public class  CalendarClearExample4 {    
public static void main(String[] args) {
      // create a calendar
      Calendar cal = (Calendar) Calendar.getInstance();
     // display the current date and time
      System.out.println("Current Calendar Date: " + cal.getTime());     
      cal.clear(Calendar.HOUR);
      cal.clear(Calendar.MINUTE);
      cal.clear(Calendar.SECOND);
      // print the result
      System.out.println("The calendar shows : " + cal.getTime());
   }
}

Test it Now

Output:

Current Calendar Date: Mon Jul 30 06:48:47 PDT 2018
The calendar shows : Mon Jul 30 06:00:00 PDT 2018

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