Class SwingWorker
- java.lang.Object
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- org.locationtech.jtstest.testbuilder.ui.SwingWorker
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- Direct Known Subclasses:
RendererSwingWorker
public abstract class SwingWorker extends java.lang.Object
This is the 3rd version of SwingWorker (also known as SwingWorker 3), an abstract class that you subclass to perform GUI-related work in a dedicated thread. For instructions on using this class, see: http://java.sun.com/docs/books/tutorial/uiswing/misc/threads.html Note that the API changed slightly in the 3rd version: You must now invoke start() on the SwingWorker after creating it.
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Nested Class Summary
Nested Classes Modifier and Type Class Description private static class
SwingWorker.ThreadVar
Class to maintain reference to current worker thread under separate synchronization control.
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Field Summary
Fields Modifier and Type Field Description private SwingWorker.ThreadVar
threadVar
private java.lang.Object
value
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Constructor Summary
Constructors Constructor Description SwingWorker()
Start a thread that will call theconstruct
method and then exit.
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description abstract java.lang.Object
construct()
Compute the value to be returned by theget
method.void
finished()
Called on the event dispatching thread (not on the worker thread) after theconstruct
method has returned.java.lang.Object
get()
Return the value created by theconstruct
method.protected java.lang.Object
getValue()
Get the value produced by the worker thread, or null if it hasn't been constructed yet.void
interrupt()
A new method that interrupts the worker thread.private void
setValue(java.lang.Object x)
Set the value produced by worker threadvoid
start()
Start the worker thread.
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Field Detail
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value
private java.lang.Object value
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threadVar
private SwingWorker.ThreadVar threadVar
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Method Detail
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getValue
protected java.lang.Object getValue()
Get the value produced by the worker thread, or null if it hasn't been constructed yet.
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setValue
private void setValue(java.lang.Object x)
Set the value produced by worker thread
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construct
public abstract java.lang.Object construct()
Compute the value to be returned by theget
method.
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finished
public void finished()
Called on the event dispatching thread (not on the worker thread) after theconstruct
method has returned.
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interrupt
public void interrupt()
A new method that interrupts the worker thread. Call this method to force the worker to stop what it's doing.
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get
public java.lang.Object get()
Return the value created by theconstruct
method. Returns null if either the constructing thread or the current thread was interrupted before a value was produced.- Returns:
- the value created by the
construct
method
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start
public void start()
Start the worker thread.
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