PrinterMessageFromOperator (Java 2 Platform SE v1.4.1) - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

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Java^TM 2 Platform
Std. Ed. v1.4.1

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javax.print.attribute.standard
Class PrinterMessageFromOperator

java.lang.Object
  |
  +--javax.print.attribute.TextSyntax
        |
        +--javax.print.attribute.standard.PrinterMessageFromOperator

All Implemented Interfaces:: Attribute, Cloneable, PrintServiceAttribute, Serializable

public final class PrinterMessageFromOperator
extends TextSyntax
implements PrintServiceAttribute

Class PrinterMessageFromOperator is a printing attribute class, a text attribute, that provides a message from an operator, system administrator, or "intelligent" process to indicate to the end user information about or status of the printer, such as why it is unavailable or when it is expected to be available.

A Print Service's attribute set includes zero instances or one instance of a PrinterMessageFromOperator attribute, not more than one instance. A new PrinterMessageFromOperator attribute replaces an existing PrinterMessageFromOperator attribute, if any. In other words, PrinterMessageFromOperator is not intended to be a history log. If it wishes, the client can detect changes to a Print Service's PrinterMessageFromOperator attribute and maintain the client's own history log of the PrinterMessageFromOperator attribute values.

IPP Compatibility: The string value gives the IPP name value. The locale gives the IPP natural language. The category name returned by getName() gives the IPP attribute name.

See Also:: Serialized Form

Constructor Summary

PrinterMessageFromOperator(String message, Locale locale)
          Constructs a new printer message from operator attribute with the given message and locale.

Method Summary

boolean equals(Object object)
          Returns whether this printer message from operator attribute is equivalent to the passed in object.

Class getCategory()
          Get the printing attribute class which is to be used as the "category" for this printing attribute value.

String getName()
          Get the name of the category of which this attribute value is an instance.

Methods inherited from class javax.print.attribute.TextSyntax

getLocale, getValue, hashCode, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

PrinterMessageFromOperator

public PrinterMessageFromOperator(String message,
                                  Locale locale)

Constructs a new printer message from operator attribute with the given message and locale.
Parameters:: message - Message.; locale - Natural language of the text string. null is interpreted to mean the default locale as returned by Locale.getDefault()
Throws:: NullPointerException - (unchecked exception) Thrown if message is null.

Method Detail

equals

public boolean equals(Object object)

Returns whether this printer message from operator attribute is equivalent to the passed in object. To be equivalent, all of the following conditions must be true:

object is not null.
object is an instance of class PrinterMessageFromOperator.
This printer message from operator attribute's underlying string and object's underlying string are equal.
This printer message from operator attribute's locale and object's locale are equal.

Overrides:: equals in class TextSyntax

Parameters:: object - Object to compare to.
Returns:: True if object is equivalent to this printer message from operator attribute, false otherwise.

getCategory

public final Class getCategory()

Get the printing attribute class which is to be used as the "category" for this printing attribute value.

For class PrinterMessageFromOperator, the category is class PrinterMessageFromOperator itself.

Specified by:: getCategory in interface Attribute

Returns:: Printing attribute class (category), an instance of class java.lang.Class.

getName

public final String getName()

Get the name of the category of which this attribute value is an instance.

For class PrinterMessageFromOperator, the category name is "printer-message-from-operator".

Specified by:: getName in interface Attribute

Returns:: Attribute category name.