printerinfo.java

java1.6众多例子参考

/*
 * @(#)PrinterInfo.java	1.10 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package javax.print.attribute.standard;

import java.util.Locale;

import javax.print.attribute.Attribute;
import javax.print.attribute.TextSyntax;
import javax.print.attribute.PrintServiceAttribute;

/**
 * Class PrinterInfo is a printing attribute class, a text attribute, that 
 * provides descriptive information about a printer. This could include things 
 * like: <CODE>"This printer can be used for printing color transparencies for 
 * HR presentations"</CODE>, or <CODE>"Out of courtesy for others, please  
 * print only small (1-5 page) jobs at this printer"</CODE>, or even \
 * <CODE>"This printer is going away on July 1, 1997, please find a new 
 * printer"</CODE>. 
 * <P>
 * <B>IPP Compatibility:</B> The string value gives the IPP name value. The 
 * locale gives the IPP natural language. The category name returned by 
 * <CODE>getName()</CODE> gives the IPP attribute name. 
 * <P>
 *
 * @author  Alan Kaminsky
 */
public final class PrinterInfo extends TextSyntax
	implements PrintServiceAttribute {

    private static final long serialVersionUID = 7765280618777599727L;

    /**
     * Constructs a new printer info attribute with the given information 
     * string and locale. 
     *
     * @param  info    Printer information string.
     * @param  locale  Natural language of the text string. null
     * is interpreted to mean the default locale as returned
     * by <code>Locale.getDefault()</code>
     *
     * @exception  NullPointerException
     *     (unchecked exception) Thrown if <CODE>info</CODE> is null. 
     */
    public PrinterInfo(String info, Locale locale) {
	super (info, locale);
    }

    /**
     * Returns whether this printer info 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 PrinterInfo.
     * <LI>
     * This printer info attribute's underlying string and 
     * <CODE>object</CODE>'s underlying string are equal. 
     * <LI>
     * This printer info attribute's locale and <CODE>object</CODE>'s 
     * locale are equal.
     * </OL>
     *
     * @param  object  Object to compare to.
     *
     * @return  True if <CODE>object</CODE> is equivalent to this printer
     *          info attribute, false otherwise. 
     */
    public boolean equals(Object object) {
	return (super.equals(object) && object instanceof PrinterInfo);
    }

    /**
     * Get the printing attribute class which is to be used as the "category" 
     * for this printing attribute value.
     * <P>
     * For class PrinterInfo, the category is class PrinterInfo itself. 
     *
     * @return  Printing attribute class (category), an instance of class
     *          {@link java.lang.Class java.lang.Class}.
     */
    public final Class<? extends Attribute> getCategory() {
	return PrinterInfo.class;
    }

    /**
     * Get the name of the category of which this attribute value is an 
     * instance. 
     * <P>
     * For class PrinterInfo, the category name is <CODE>"printer-info"</CODE>. 
     *
     * @return  Attribute category name.
     */
    public final String getName() {
	return "printer-info";
    }

}