java.util.Calendar.before() es un método en la clase Calendar del paquete java.util. El método devuelve verdadero si la hora representada por este calendario es anterior a la hora representada por el objeto when . Si no es el caso, se devuelve falso .
Sintaxis:
public boolean before(Object when) Where, when is the Object that is to be compared.
A continuación se muestran algunos ejemplos para comprender mejor la implementación de la función Calendar.before().
Ejemplo 1 :
// Implementation to show the usage
// of before(Object when) method of
// Calendar class
import java.util.*;
class GFG {
public static void main(String[] args)
throws InterruptedException
{
// creating calendar object
Calendar cal_obj1 = Calendar.getInstance();
// printing current date
System.out.println("Time 1 : " + cal_obj1.getTime());
// sleep for 3 seconds
Thread.sleep(3000);
// creating Calendar object
Calendar cal_obj2 = Calendar.getInstance();
// printing current date
System.out.println("Time 2 : " + cal_obj2.getTime());
// checking if 1st date is before 2nd date
// and printing the result
System.out.println(cal_obj1.before(cal_obj2));
}
}
Producción :
Time 1 : Wed Feb 28 15:43:19 IST 2018 Time 2 : Wed Feb 28 15:43:22 IST 2018 true
Ejemplo 2:
// Implementation to show the usage
// of before(Object when) method of
// Calendar class
import java.util.*;
class GFG {
public static void main(String[] args)
{
// creating calendar objects
Calendar cal_obj1 = Calendar.getInstance();
Calendar cal_obj2 = Calendar.getInstance();
// displaying the current date
System.out.println("Current date is : " + cal_obj1.getTime());
// changing year in cal_obj2 calendar
cal_obj2.set(Calendar.YEAR, 2010);
// displaying the year
System.out.println("Year is " + cal_obj2.get(Calendar.YEAR));
// check if calendar date is before current date
System.out.println("Result : " + cal_obj1.before(cal_obj2));
}
}
Producción :
Current date is : Wed Feb 28 15:50:16 IST 2018 Year is 2010 Result : false
Ejemplo 3:
// Implementation to show the usage
// of before(Object when) method of
// Calendar class
import java.util.*;
class GFG {
public static void main(String[] args)
{
// creating calendar objects
Calendar cal_obj1 = Calendar.getInstance();
Calendar cal_obj2 = Calendar.getInstance();
// displaying the current date
System.out.println("Current date is : " + cal_obj1.getTime());
// changing year in cal_obj2 calendar
cal_obj2.set(Calendar.YEAR, 2025);
// displaying the year
System.out.println("Year is " + cal_obj2.get(Calendar.YEAR));
// check if calendar date is before current date
System.out.println("Result : " + cal_obj1.before(cal_obj2));
}
}
Producción :
Current date is : Wed Feb 28 16:15:55 IST 2018 Year is 2025 Result : true
Publicación traducida automáticamente
Artículo escrito por Sahil_Bansall y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA