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JDK 1.6
  javax.print.attribute.standard. PrinterResolution View Javadoc
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/*
 * @(#)PrinterResolution.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 javax.print.attribute.Attribute;
import javax.print.attribute.ResolutionSyntax;
import javax.print.attribute.DocAttribute;
import javax.print.attribute.PrintRequestAttribute;
import javax.print.attribute.PrintJobAttribute;

/**
 * Class PrinterResolution is a printing attribute class that specifies an 
 * exact resolution supported by a printer or to be used for a print job. 
 * This attribute assumes that printers have a small set of device resolutions
 * at which they can operate rather than a continuum.
 * <p>
 * PrinterResolution is used in multiple ways: 
 * <OL TYPE=1>
 * <LI>
 * When a client searches looking for a printer that supports the client's
 * desired resolution exactly (no more, no less), the client specifies 
 * an instance of class PrinterResolution indicating the exact resolution the 
 * client wants. Only printers supporting that exact resolution will match the 
 * search. 
 * <P>
 * <LI>
 * When a client needs to print a job using the client's desired resolution 
 * exactly (no more, no less), the client specifies an instance of class 
 * PrinterResolution as an attribute of the Print Job. This will fail if the 
 * Print Job doesn't support that exact resolution, and Fidelity is set to
 * true.
 * </OL>
 * If a client wants to locate a printer supporting a resolution
 * greater than some required minimum, then it may be necessary to exclude
 * this attribute from a lookup request and to directly query the set of
 * supported resolutions, and specify the one that most closely meets
 * the client's requirements.
 * In some cases this may be more simply achieved by specifying a
 * PrintQuality attribute which often controls resolution.
 * <P>
 * <P>
 * <B>IPP Compatibility:</B> The information needed to construct an IPP 
 * <CODE>"printer-resolution"</CODE> attribute can be obtained by calling 
 * methods on the PrinterResolution object. The category name returned by 
 * <CODE>getName()</CODE> gives the IPP attribute name. 
 * <P>
 *
 * @author  David Mendenhall
 * @author  Alan Kaminsky
 */
public final class PrinterResolution extends ResolutionSyntax
	implements DocAttribute, PrintRequestAttribute, PrintJobAttribute {

    private static final long serialVersionUID = 13090306561090558L;

    /**
     * Construct a new printer resolution attribute from the given items. 
     *
     * @param  crossFeedResolution
     *     Cross feed direction resolution.
     * @param  feedResolution
     *     Feed direction resolution.
     * @param  units
     *    Unit conversion factor, e.g. <code>ResolutionSyntax.DPI</CODE>
     * or <code>ResolutionSyntax.>DPCM</CODE>. 
     *
     * @exception  IllegalArgumentException
     *     (unchecked exception) Thrown if <CODE>crossFeedResolution</CODE> < 
     *     1 or <CODE>feedResolution</CODE> < 1 or <CODE>units</CODE> < 1. 
     */
    public PrinterResolution(int crossFeedResolution, int feedResolution,
			     int units) {
	super (crossFeedResolution, feedResolution, units);
    }

    /**
     * Returns whether this printer resolution 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 PrinterResolution.
     * <LI>
     * This attribute's cross feed direction resolution is equal to 
     * <CODE>object</CODE>'s cross feed direction resolution. 
     * <LI>
     * This attribute's feed direction resolution is equal to
     * <CODE>object</CODE>'s feed direction resolution. 
     * </OL>
     *
     * @param  object  Object to compare to.
     *
     * @return  True if <CODE>object</CODE> is equivalent to this printer
     *          resolution attribute, false otherwise. 
     */
    public boolean equals(Object object) {
	return (super.equals (object) &&
		object instanceof PrinterResolution);
    }

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

}

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