Package examples
Class LocalStorageExample1
java.lang.Object
org.jdesktop.application.AbstractBean
org.jdesktop.application.Application
examples.LocalStorageExample1
A simple demonstration of the
LocalStorage
class: loads and saves
a LinkedHashMap
(a HashMap
whose entries have a stable order).
To try it, add some entries to the Map by pressing the "Add Random Entry"
button or by entering key/value strings in the corresponding text fields.
Then save the Map (to a file), clear, and load the saved Map.
with the corresponding buttons.
The map is saved with the LocalStorage
save
method like this:
LinkedHashMap<String, String> map = listModel.getMap(); ApplicationContext.getInstance().getLocalStorage().save(map, "map.xml");And loaded with the
LocalStorage
load
method like this:
Object map = ApplicationContext.getInstance().getLocalStorage().load("map.xml"); listModel.setMap((LinkedHashMap<String, String>)map);The
LocalStorage.save/load
methods can be applied to
anything supported by Java Beans Persistence, i.e. any Java Bean
as well as most of the primitive and utility Java classes.
The LocalStorage.save
method is implemented
with the XMLEncoder
class
and the LocalStorage.load
method with
the XMLDecoder
class.
Take a look at the contents of "map.xml"
by cut and pasting the
complete pathname from the bottom of the GUI into your favorite
text editor.- See Also:
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Nested Class Summary
Nested classes/interfaces inherited from class org.jdesktop.application.Application
Application.ExitListener
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Constructor Summary
Constructors -
Method Summary
Methods inherited from class org.jdesktop.application.Application
addExitListener, end, exit, exit, getContext, getExitListeners, getInstance, getInstance, hide, initialize, launch, quit, ready, removeExitListener, show, shutdown
Methods inherited from class org.jdesktop.application.AbstractBean
addPropertyChangeListener, addPropertyChangeListener, firePropertyChange, firePropertyChange, getPropertyChangeListeners, removePropertyChangeListener, removePropertyChangeListener
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Constructor Details
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LocalStorageExample1
public LocalStorageExample1()
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Method Details
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addKeyValueEntry
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addRandomEntry
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clearMap
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loadMap
- Throws:
IOException
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saveMap
- Throws:
IOException
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startup
protected void startup()Description copied from class:Application
Responsible for starting the application; for creating and showing the initial GUI.This method is called by the static
launch
method, subclasses must override it. It runs on the event dispatching thread.- Specified by:
startup
in classApplication
- See Also:
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main
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