GregorianCalendar

java.util
Class GregorianCalendar

java.lang.Object
  java.util.Calendar
      java.util.GregorianCalendar

All Implemented Interfaces:: Serializable, Cloneable, Comparable<Calendar>

See Also:: Top Examples, Source Code, setGregorianChange(), TimeZone

public static final int AD

See Also:: Calendar.ERA

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[191]Create a Calendar with specific date
By Anonymous on 2005/09/14 21:24:15 Rate

Calendar calAD = java.util.GregorianCalendar.getInstance (  ) ; 
 calAD.set (  1999, 1, 23  ) ; 
 System.out.println ( calAD.getTime (  )  ) ;

public void add(int field,
                int amount)

See Also:: Calendar.set(int,int), Calendar.roll(int,int), IllegalArgumentException

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public static final int BC

See Also:: Calendar.ERA

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public Object clone()

See Also:: Cloneable, Calendar

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protected void computeFields()

See Also:: Calendar.complete()

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protected void computeTime()

See Also:: Calendar.computeFields(), Calendar.complete(), IllegalArgumentException

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public boolean equals(Object obj)

See Also:: Calendar.compareTo(Calendar)

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public int getActualMaximum(int field)

See Also:: getActualMinimum(int), getLeastMaximum(int), getGreatestMinimum(int), getMaximum(int), getMinimum(int), Calendar, getTimeZone, getMinimalDaysInFirstWeek, getFirstDayOfWeek

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public int getActualMinimum(int field)

See Also:: getActualMaximum(int), getLeastMaximum(int), getGreatestMinimum(int), getMaximum(int), getMinimum(int), Calendar, getTimeZone, getMinimalDaysInFirstWeek, getFirstDayOfWeek

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public int getGreatestMinimum(int field)

See Also:: getActualMaximum(int), getActualMinimum(int), getLeastMaximum(int), getMaximum(int), getMinimum(int), Calendar, getTimeZone, getMinimalDaysInFirstWeek, getFirstDayOfWeek

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public final Date getGregorianChange()

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public int getLeastMaximum(int field)

See Also:: getActualMaximum(int), getActualMinimum(int), getGreatestMinimum(int), getMaximum(int), getMinimum(int), Calendar, getTimeZone, getMinimalDaysInFirstWeek, getFirstDayOfWeek

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public int getMaximum(int field)

See Also:: getActualMaximum(int), getActualMinimum(int), getLeastMaximum(int), getGreatestMinimum(int), getMinimum(int), Calendar, getTimeZone, getMinimalDaysInFirstWeek, getFirstDayOfWeek, get

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public int getMinimum(int field)

See Also:: getActualMaximum(int), getActualMinimum(int), getLeastMaximum(int), getGreatestMinimum(int), getMaximum(int), Calendar, getTimeZone, getMinimalDaysInFirstWeek, getFirstDayOfWeek, get

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public TimeZone getTimeZone()

See Also:: Calendar

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public GregorianCalendar()

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[46]Use Date & Time operation of calendar class
By Anonymous on 2003/11/21 12:19:43 Rate

// The `calendar' class contains operations for getting 
 //  the day and date from a `Date' object. 
 GregorianCalendar calendar = new GregorianCalendar (  ) ; 
  
  
 // The `setTime' operation sets the time to that contained in the 
 //  the specified date object. As a new date object by default 
 //  contains the current date and time, the effect of the line 
 //  below is to initialize the Calendar obejct to the current 
 //  date and time. 
 calendar.setTime  ( new Date (  )  ) ;   
  
  
 //  ( Note that by convention in Java programming, constants 
 //  are given names in capital letters ) . This is not 
 //  compulsory, but all professional Java programmers do it 
  
  
 int hour = calendar.get ( calendar.HOUR_OF_DAY ) ; 
 int minute = calendar.get ( calendar.MINUTE ) ; 
  
  
 int dayOfWeek = calendar.get ( calendar.DAY_OF_WEEK ) ; 
 int dayOfMonth = calendar.get ( calendar.DAY_OF_MONTH ) ; 
 int month = calendar.get ( calendar.MONTH ) ;

[1242]Classe que demonstra as funcionalidades de GregorianCalendar e SimpleDateFormat
By Anonymous on 2005/01/04 18:42:47 Rate

/* Classe que demonstra as funcionalidades de GregorianCalendar e SimpleDateFormat */ 
  
  
 public class Demonstra  {  
  
  
 public static void main  ( String args [  ]  )   {  
  
  
 /* Aqui instanciamos a classe GregorianCalendar de forma que ela chame o construtor padr??o dela */ 
 GregorianCalendar calendario = new GregorianCalendar (  ) ; 
  
  
 /* Aqui instanciamos a classe SimpleDateFormat passando argumentos para o construtor de forma que ele inicialize os valores atrav??s dos argumentos passados */ 
 SimpleDateFormat data = new SimpleDateFormat ( "dd/MM/yyyy" ) ; 
 SimpleDateFormat hora = new SimpleDateFormat ( "HH:mm" ) ; 
  
  
 /* Aqui chamamos o conhecido m??todo println para exibir nossos dados, na primeira linha fazemos com que o m??todo getTime nos retorne todos os dados, atrav??s da refer??ncia "calendario" para a classe GregorianCalendar */ 
 System.out.println ( "Informa????o completa " + calendario.getTime (  )  ) ; 
  
  
 /* Aqui fazemos com que o valor retornado pelo m??todo getTime seja formatado pelo m??todo format que passar?? uma mensagem ao objeto "data" */ 
 System.out.println ( "Data " + data.format ( calendario.getTime (  )  ) ; 
  
  
 /* Aqui fazemos com que o valor retornado pelo m??todo getTime seja formatado pelo m??todo format que passar?? uma mensagem ao objeto "hora" */ 
 System.out.println ( "Hora " + hora.format ( calendario.getTime (  )  ) ; 
  
  
  }  
  
  
  }

[1407]_
By aaa on 2005/04/30 21:00:40 Rate

// The `calendar' class contains operations for getting 
 //  the day and date from a `Date' object. 
 GregorianCalendar calendar = new GregorianCalendar (  ) ; 
  
  
 // The `setTime' operation sets the time to that contained in the 
 //  the specified date object. As a new date object by default 
 //  contains the current date and time, the effect of the line 
 //  below is to initialize the Calendar obejct to the current 
 //  date and time. 
 calendar.setTime  ( new Date (  )  ) ;   
  
  
 //  ( Note that by convention in Java programming, constants 
 //  are given names in capital letters ) . This is not 
 //  compulsory, but all professional Java programmers do it 
  
  
 int hour = calendar.get ( calendar.HOUR_OF_DAY ) ; 
 int minute = calendar.get ( calendar.MINUTE ) ; 
  
  
 int dayOfWeek = calendar.get ( calendar.DAY_OF_WEEK ) ; 
 int dayOfMonth = calendar.get ( calendar.DAY_OF_MONTH ) ; 
 int month = calendar.get ( calendar.MONTH ) ;

public GregorianCalendar(int year,
                         int month,
                         int dayOfMonth)

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public GregorianCalendar(int year,
                         int month,
                         int dayOfMonth,
                         int hourOfDay,
                         int minute)

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public GregorianCalendar(int year,
                         int month,
                         int dayOfMonth,
                         int hourOfDay,
                         int minute,
                         int second)

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public GregorianCalendar(Locale aLocale)

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public GregorianCalendar(TimeZone zone)

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public GregorianCalendar(TimeZone zone,
                         Locale aLocale)

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public int hashCode()

See Also:: Hashtable, Object.equals(java.lang.Object), Calendar

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public boolean isLeapYear(int year)

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[878]Check Leap year
By Anonymous on 2005/09/29 07:18:21 Rate
x = isLeapYear ( year ) ;

public void roll(int field,
                 boolean up)

See Also:: Calendar.set(int,int), add(int,int), IllegalArgumentException

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[1096]Short DateFormat
By Anonymous on 2004/11/04 12:40:45 Rate

Calendar expires = new GregorianCalendar (  ) ; 
 DateFormat df = DateFormat.getDateInstance ( DateFormat.SHORT ) ; 
 expires.setTime ( df.parse ( "11/6/2004" )  ) ; 
  
  
 Calendar now = new GregorianCalendar (  ) ; 
 now.setTime ( new Date (  )  ) ; 
 now.roll ( Calendar.DAY_OF_YEAR, 3 ) ; 
  
  
 if  ( expires.before ( now )  )  
   System.out.println ( "Hit it" ) ;

public void roll(int field,
                 int amount)

See Also:: Calendar.set(int,int), add(int,int), roll(int,boolean), IllegalArgumentException, Calendar.complete()

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public void setGregorianChange(Date date)

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public void setTimeZone(TimeZone zone)

See Also:: Calendar

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java.util Class GregorianCalendar

java.util
Class GregorianCalendar