Java Reference
In-Depth Information
String getName()
accessormethodanda
void setName(String
name)
mutator method.
• Instances of the class must be serializable.
Thefirstconventionallowsapplicationsandframeworkstoeasilyinstantiateabean,
thesecondconventionletsthemautomaticallyinspectandupdatebeanstate,andthe
third convention allows them to reliably store bean state to and restore bean state
from a persistent store (such as a file).
JavaBeans was created so that visual editors could present palettes of Swing com-
ponents(e.g.,
JList
and
JButton
)thatdeveloperswouldaccesstoquicklycreate
graphical user interfaces. However, JavaBeans is applicable to any kind of
component-oriented editor.
JavaBeansisalsousefulwith
activation frameworks
thatdeterminethetypeofanar-
bitrarypieceofdata,encapsulateaccesstothedata,discovertheavailableoperations
for the data, and instantiate the appropriate bean to perform those operations.
Forexample,ifaJava-basedbrowserobtainedaJPEGimage,theJavaBeansActiv-
ationFrameworkwouldenablethebrowsertoidentifythatstreamofdataasaJPEG
image.Fromthattype,thebrowsercouldlocateandinstantiateanobjectformanip-
ulating or viewing that image.
FormoreinformationonJavaBeans,checkoutthe“JavaBeansTrail”inOracle'son-
line Java Tutorial (
http://download.oracle.com/javase/tutorial/
After creating the necessary output stream to
library.ser
and instantiating
XMLEncoder
via Java 7's try-with-resources statement (to ensure proper resource
cleanup whether or not an exception is thrown),
serialize()
invokes
XMLEn-
coder
's
void writeObject(Object o)
methodwith
library
asthismeth-
od'sargumentsothattheentiremapwillbeserialized.The
deserialize()
method
creates the necessary input stream to
library.ser
, instantiates
XMLDecoder
, in-
vokes this class's
XMLDecoder
's
Object readObject()
method, and returns
the deserialized object returned from this method after casting it to
Map<String,
Book>
.
on path
/library
of port 9902 of the local host, by executing
End-
point.publish("http://localhost:9902/library",
new
Library());
.
ation about individual books.
