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The Java Developers Almanac 1.4Order this book from Amazon. |
e2. Implementing a Bound PropertyA bound property fires aPropertyChangeEvent whenever its value is
changed. This example bean implements a single bound integer property
called myProperty .
int myProperty; public int getMyProperty() { return myProperty; } public void setMyProperty(int newValue) { int oldValue = myProperty; myProperty = newValue; pceListeners.firePropertyChange("myProperty", new Integer(oldValue), new Integer(newValue)); } // Create the listener list. PropertyChangeSupport pceListeners = new PropertyChangeSupport(this); // The listener list wrapper methods. public synchronized void addPropertyChangeListener(PropertyChangeListener listener) { pceListeners.addPropertyChangeListener(listener); } public synchronized void removePropertyChangeListener(PropertyChangeListener listener) { pceListeners.removePropertyChangeListener(listener); }
e3. Implementing a Constrained Property e4. Instantiating a Bean e5. Listing the Property Names of a Bean e6. Getting and Setting a Property of a Bean
© 2002 Addison-Wesley. |