Source for javax.print.attribute.DateTimeSyntax

   1: /* DateTimeSyntax.java -- 
   2:    Copyright (C) 2003 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: package javax.print.attribute;
  39: 
  40: import java.io.Serializable;
  41: import java.util.Date;
  42: 
  43: /**
  44:  * @author Michael Koch
  45:  */
  46: public abstract class DateTimeSyntax implements Cloneable, Serializable
  47: {
  48:   private static final long serialVersionUID = -1400819079791208582L;
  49:   
  50:   private Date value;
  51:   
  52:   /**
  53:    * Creates a <code>DateTimeSyntax</code> with a given value.
  54:    *
  55:    * @param value the value for this syntax
  56:    *
  57:    * @exception NullPointerException if value is null
  58:    */
  59:   protected DateTimeSyntax(Date value)
  60:   {
  61:     if (value == null)
  62:       throw new NullPointerException("value may not be null");
  63: 
  64:     this.value = value;
  65:   }
  66: 
  67:   /**
  68:    * Returns the date value of this object.
  69:    *
  70:    * @return the date value
  71:    */
  72:   public Date getValue()
  73:   {
  74:     return value;
  75:   }
  76: 
  77:   /**
  78:    * Tests if the given object is equal to this one.
  79:    * 
  80:    * @param obj the object to test
  81:    *
  82:    * @return True if both objects are equal, false otherwise.
  83:    */
  84:   public boolean equals(Object obj)
  85:   {
  86:     if (! (obj instanceof DateTimeSyntax))
  87:       return false;
  88: 
  89:     return value.equals(((DateTimeSyntax) obj).getValue());
  90:   }
  91: 
  92:   /**
  93:    * Returns the hashcode for this object.
  94:    *
  95:    * @return the hashcode
  96:    */
  97:   public int hashCode()
  98:   {
  99:     return value.hashCode();
 100:   }
 101: }