JDK14/Java14源码在线阅读

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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package javax.print.attribute.standard;

import javax.print.attribute.Attribute;
import javax.print.attribute.IntegerSyntax;
import javax.print.attribute.PrintJobAttribute;
import javax.print.attribute.PrintRequestAttribute;

/**
 * Class {@code JobPriority} is an integer valued printing attribute class that
 * specifies a print job's priority.
 * <p>
 * If a {@code JobPriority} attribute is specified for a Print Job, it specifies
 * a priority for scheduling the job. A higher value specifies a higher
 * priority. The value 1 indicates the lowest possible priority. The value 100
 * indicates the highest possible priority. Among those jobs that are ready to
 * print, a printer must print all jobs with a priority value of <i>n</i> before
 * printing those with a priority value of <i>n</i>-1 for all <i>n.</i>
 * <p>
 * If the client does not specify a {@code JobPriority} attribute for a Print
 * Job and the printer does support the JobPriority attribute, the printer must
 * use an implementation-defined default JobPriority value.
 * <p>
 * The client can always specify any job priority value from 1 to 100 for a job.
 * However, a Print Service instance may support fewer than 100 different job
 * priority levels. If this is the case, the Print Service instance
 * automatically maps the client-specified job priority value to one of the
 * supported job priority levels, dividing the 100 job priority values equally
 * among the available job priority levels.
 * <p>
 * <b>IPP Compatibility:</b> The integer value gives the IPP integer value. The
 * category name returned by {@code getName()} gives the IPP attribute name.
 *
 * @author Alan Kaminsky
 */
public final class JobPriority extends IntegerSyntax
    implements PrintRequestAttribute, PrintJobAttribute {

    /**
     * Use serialVersionUID from JDK 1.4 for interoperability.
     */
    private static final long serialVersionUID = -4599900369040602769L;

    /**
     * Construct a new job priority attribute with the given integer value.
     *
     * @param  value Integer value
     * @throws IllegalArgumentException if {@code value} is less than 1 or
     *         greater than 100
     */
    public JobPriority(int value) {
        super (value, 1, 100);
    }

    /**
     * Returns whether this job priority 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} is not {@code null}.
     *   <li>{@code object} is an instance of class {@code JobPriority}.
     *   <li>This job priority attribute's value and {@code object}'s value are
     *   equal.
     * </ol>
     *
     * @param  object {@code Object} to compare to
     * @return {@code true} if {@code object} is equivalent to this job priority
     *         attribute, {@code false} otherwise
     */
    public boolean equals(Object object) {
        return (super.equals (object) && object instanceof JobPriority);
    }

    /**
     * Get the printing attribute class which is to be used as the "category"
     * for this printing attribute value.
     * <p>
     * For class {@code JobPriority}, the category is class
     * {@code JobPriority} itself.
     *

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