Implementing a Bound Property : Java Beans « Development Class « Java

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Java » Development Class » Java Beans 




Implementing a Bound Property
    


import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;

public class MyBean {
  PropertyChangeSupport pceListeners = new PropertyChangeSupport(this);

  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));
  }

  public synchronized void addPropertyChangeListener(
      PropertyChangeListener listener) {
    pceListeners.addPropertyChangeListener(listener);
  }

  public synchronized void removePropertyChangeListener(
      PropertyChangeListener listener) {
    pceListeners.removePropertyChangeListener(listener);
  }

}

   
    
    
    
  














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