datetimeatcreation.java

java jdk 1.4的源码

/*
 * @(#)DateTimeAtCreation.java	1.4 03/01/23
 *
 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package javax.print.attribute.standard;

import java.util.Date;
import javax.print.attribute.DateTimeSyntax;
import javax.print.attribute.PrintJobAttribute;

/**
 * Class DateTimeAtCreation is a printing attribute class, a date-time 
 * attribute, that indicates the date and time at which the Print Job was 
 * created. 
 * <P>
 * To construct a DateTimeAtCreation attribute from separate values of the year, 
 * month, day, hour, minute, and so on, use a {@link java.util.Calendar 
 * Calendar} object to construct a {@link java.util.Date Date} object, then use 
 * the {@link java.util.Date Date} object to construct the DateTimeAtCreation 
 * attribute. To convert a DateTimeAtCreation attribute to separate values of 
 * the year, month, day, hour, minute, and so on, create a {@link 
 * java.util.Calendar Calendar} object and set it to the {@link java.util.Date 
 * Date} from the DateTimeAtCreation attribute. 
 * <P>
 * <B>IPP Compatibility:</B> The information needed to construct an IPP 
 * "date-time-at-creation" attribute can be obtained as described above. The 
 * category name returned by <CODE>getName()</CODE> gives the IPP attribute 
 * name. 
 * <P>
 *
 * @author  Alan Kaminsky
 */
public final class DateTimeAtCreation	extends DateTimeSyntax
	implements PrintJobAttribute {

    /**
     * Construct a new date-time at creation attribute with the given {@link 
     * java.util.Date Date} value. 
     *
     * @param  dateTime  {@link java.util.Date Date} value.
     *
     * @exception  NullPointerException
     *     (unchecked exception) Thrown if <CODE>dateTime</CODE> is null.
     */
    public DateTimeAtCreation(Date dateTime) {
	super (dateTime);
    }

    /**
     * Returns whether this date-time at creation attribute is equivalent to 
     * the passed in object. To be equivalent, all of the following conditions
     * must be true: 
     * <OL TYPE=1>
     * <LI>
     * <CODE>object</CODE> is not null.
     * <LI>
     * <CODE>object</CODE> is an instance of class DateTimeAtCreation.
     * <LI>
     * This date-time at creation attribute's {@link java.util.Date Date} value 
     * and <CODE>object</CODE>'s {@link java.util.Date Date} value are equal. 
     * </OL>
     *
     * @param  object  Object to compare to.
     *
     * @return  True if <CODE>object</CODE> is equivalent to this date-time
     *          at creation attribute, false otherwise. 
     */
    public boolean equals(Object object) {
	return(super.equals (object) &&
	       object instanceof DateTimeAtCreation);
    }

    /**
     * Get the printing attribute class which is to be used as the "category" 
     * for this printing attribute value.
     * <P>
     * For class DateTimeAtCreation, the category is class 
     * DateTimeAtCreation itself. 
     *
     * @return  Printing attribute class (category), an instance of class
     *          {@link java.lang.Class java.lang.Class}.
     */
    public final Class getCategory() {
	return DateTimeAtCreation.class;
    }
    
    /**
     * Get the name of the category of which this attribute value is an 
     * instance. 
     * <P>
     * For class DateTimeAtCreation, the category name is 
     * <CODE>"date-time-at-creation"</CODE>. 
     *
     * @return  Attribute category name.
     */
    public final String getName() {
	return "date-time-at-creation";
    }
    
}