Java javax.print Class SimpleDoc（JDK8）

Constructor Detail

• SimpleDoc

  public SimpleDoc(Object printData,
                   DocFlavor flavor,
                   DocAttributeSet attributes)

  Constructs a SimpleDoc with the specified print data, doc flavor and doc attribute set.

  Parameters:

  printData - the print data object

  flavor - the DocFlavor object

  attributes - a DocAttributeSet, which can be null

  Throws:

  IllegalArgumentException - if flavor or printData is null, or the printData does not correspond to the specified doc flavor--for example, the data is not of the type specified as the representation in the DocFlavor.

Method Detail

• getDocFlavor

  public DocFlavor getDocFlavor()

  Determines the doc flavor in which this doc object will supply its piece of print data.

  Specified by:

  getDocFlavor in interface Doc

  Returns:

  Doc flavor.

• getAttributes

  public DocAttributeSet getAttributes()

  Obtains the set of printing attributes for this doc object. If the returned attribute set includes an instance of a particular attribute X, the printer must use that attribute value for this doc, overriding any value of attribute X in the job's attribute set. If the returned attribute set does not include an instance of a particular attribute X or if null is returned, the printer must consult the job's attribute set to obtain the value for attribute X, and if not found there, the printer must use an implementation-dependent default value. The returned attribute set is unmodifiable.

  Specified by:

  getAttributes in interface Doc

  Returns:

  Unmodifiable set of printing attributes for this doc, or null to obtain all attribute values from the job's attribute set.

• getPrintData

  public Object getPrintData()
                      throws IOException

  Description copied from interface: Doc
  Obtains the print data representation object that contains this doc object's piece of print data in the format corresponding to the supported doc flavor. The getPrintData() method returns an instance of the representation class whose name is given by getDocFlavor().getRepresentationClassName(), and the return value can be cast from class Object to that representation class.

  Specified by:

  getPrintData in interface Doc

  Returns:

  Print data representation object.

  Throws:

  IOException - Thrown if the representation class is a stream and there was an I/O error while constructing the stream.

• getReaderForText

  public Reader getReaderForText()
                          throws IOException

  Obtains a reader for extracting character print data from this doc. The Doc implementation is required to support this method if the DocFlavor has one of the following print data representation classes, and return null otherwise:

  • char[]
  • java.lang.String
  • java.io.Reader

  The doc's print data representation object is used to construct and return a Reader for reading the print data as a stream of characters from the print data representation object. However, if the print data representation object is itself a Reader then the print data representation object is simply returned.

  Specified by:

  getReaderForText in interface Doc

  Returns:

  a Reader for reading the print data characters from this doc. If a reader cannot be provided because this doc does not meet the criteria stated above, null is returned.

  Throws:

  IOException - if there was an I/O error while creating the reader.

• getStreamForBytes

  public InputStream getStreamForBytes()
                                throws IOException

  Obtains an input stream for extracting byte print data from this doc. The Doc implementation is required to support this method if the DocFlavor has one of the following print data representation classes; otherwise this method returns null:

  • byte[]
  • java.io.InputStream

  The doc's print data representation object is obtained. Then, an input stream for reading the print data from the print data representation object as a stream of bytes is created and returned. However, if the print data representation object is itself an input stream then the print data representation object is simply returned.

  Specified by:

  getStreamForBytes in interface Doc

  Returns:

  an InputStream for reading the print data bytes from this doc. If an input stream cannot be provided because this doc does not meet the criteria stated above, null is returned.

  Throws:

  IOException - if there was an I/O error while creating the input stream.