Developing Java Beans
by Robert Englander


Here are the changes made in the 11/99 reprint:


{xvi} Changed email from:
	
	rob.englander@worldnet.att.net

To:
	
	rob@mindstrm.com


{26} Changed
     
	is the base class for all components

to:
     
	is the base class for many components


{31} Changed
     
	setLabel(new Integer(count).toString));

to:
     
	setLabel(String.valueOf(count));


{32} Changed
     
	this(``");

to:
     
	this("");


{34} Changed
    
	protected void temperature2Changed(double newTemp);

to:
    
	protected void temperature2Changed(double newTemp)


{34} Changed
    
	if (thermometer1 == evt.getSource())

to:
    
	if (temperature1 == evt.getSource())


{35} Changed
    
	if (thermometer2 == evt.getSource())

to:
    
	if (temperature2 == evt.getSource())


{36} In the code, line 2:  changed "implements TemperatureChangeListener" 
     to "implements TempChangeListener"


{38} The invocation of super() referenced a class variable too early.
     Changed

      TemperatureAdapter1()
      {
         super(theTemperature1);
      }
   
to:

      TemperatureAdapter1(Temperature t)
      {
         super(t);
      }


{38} Changed
    
	TemperatureAdapter2()
    	{
           super(theTemperature2);
    	}

to:

   	TemperatureAdapter2(Temperature t)
   	{
           super(t);
   	}


{39} Changed
      
	(double newTemp);
   
to
      
	(double newTemp)


{43} Changed
    
	that adapts the TempChangedListener

to:
    
	that adapts the TempChangeListener


{45} The method calls must account for the NoSuchMethodException.
     Changed

      tempAdapter.registerEventHandler(theTemperature1,
                                       "temperature1Changed");
      tempAdapter.registerEventHandler(theTemperature2,
                                       "temperature2Changed");
   
to:

      try
      {
         tempAdapter.registerEventHandler(theTemperature1,
                                       "temperature1Changed");
         tempAdapter.registerEventHandler(theTemperature2,
                                       "temperature2Changed");
      }
      catch (NoSuchMethodException e)
      {
         System.out.println(e);
      }


{46} Changed

      protected void temperature1Changed
   
to:

      public void temperature1Changed

also changed:

      protected void temperature2Changed
   
to:

      public void temperature2Changed


{47} This constructor may throw a ClassNotFoundException. Changed

      public GenericButtonAdapter(Object target)
to
      public GenericButtonAdapter(Object target)
         throws ClassNotFoundException


{49} Changed (in all three places)

      Button b = e.getSource();
   
to:

      Button b = (Button)e.getSource();

also changed:

      public void handleB3(MouseEvent e)
   
to:

      public void handleB#(ActionEvent e)


{51} Changed
     
	evt.getTemperature() > highTemperature)

to:
     
	evt.getTemperature() > highThreshold)


{56} Changed

      public void pollSent(PollEvent e)
   
to:

      public synchronized void pollSent(PollEvent e)

also changed

      this.resume();
   
to:

      this.notify();


{57-58} Changed

      this.suspend();
   
to:

      try
      {
         this.wait();
      }
      catch (Exception e)
      {
      }


{61} Changed
     
	theTemperature. addTempChangeListener(this);

to:
     
	theTemperature.addTempChangeListener(this);


{68} Changed

      PropertyChangedEvent evt =
   
to:

      PropertyChangeEvent evt =

also changed

      new PropertyChangedEvent
   
to:

      new PropertyChangeEvent


{75} Changed "constrainedhandler" to "constrainedHandler"


{76} Changed
     
	our own criteria

to:
     
	our own criterion


{76} Changed "constrainedhandler" to "constrainedHandler"


{76} Changed
    
	throw new PropertyVetoException();

to:
    
    	PropertyChangeEvent e = new PropertyChangeEvent(this,
    "MinimumTemperature", null, new Double(newVal));
        throw new PropertyVetoException("Bad MinimumTemperature", e);


{113} Changed (2 places): "s.writeObject" to "stream.writeObject";
      also, changed "s.readObject" to "stream.readObject"


{134} Changed 2 occurences of
      
	ARCHIVES

to:
      
	ARCHIVE


{145} Changed
     
	Beans.util.PickleButton

to:
     
	BeansBook.util.PickleButton


{153} Changed
     
	java.io.PropertyChangeEvent

to:
     
	java.beans.PropertyChangeEvent


{153} Changed
     
	simulator tend to be

to:
     
	simulator tends to be


{160} Changed

      // boolean bWriteNull
   
to:

      boolean bWriteNull

{168} Add to the import list:

      import java.io.*;


{168} Changed
     
	and ambientTemperature

to:
    
	and ambientTemp


{174} Changed
     
     setNeedsCooling((ambientTemp > comfortTemp) &&
                     (ambientTemp - comfortTemp >= 1.0));
     setNeedsHeating((ambientTemp < comfortTemp) &&
                     (comfortTemp - ambientTemp >= 1.0));

to:
     
     setNeedsCooling(ambientTemp - comfortTemp >= 1.0);
     setNeedsHeating(comfortTemp - ambientTemp >= 1.0);


{175} Changed

      new Integer(d.longValue
   
to:

      new Long(d.longValue


{181} Changed
     
     setNeedsCooling((ambientTemp > comfortTemp) &&
                     (ambientTemp - comfortTemp >= 1.0));
     setNeedsHeating((ambientTemp < comfortTemp) &&
                     (comfortTemp - ambientTemp >= 1.0));

to:
     
     setNeedsCooling(ambientTemp - comfortTemp >= 1.0);
     setNeedsHeating(comfortTemp - ambientTemp >= 1.0);


{182} Changed (2 places): "s.writeObject" to "stream.writeObject"; also
      changed "if (heatingListeners!= null)" to "if (heatingListeners !=
      null)"


{183} Changed (2 places): "s.writeObject" to "stream.writeObject"; also
      changed "s.readObject" to "stream.readObject"


{258} Changed
    
	temperaturePulse(new TemperaturePulseEvent(null, pulse));

to:
    
	temperaturePulse(new TemperaturePulseEvent(this, pulse));


{258} Removed the sentence
     
	I've passed null as the first parameter to the constructor, 
        indicating that the actual source of the pulse is unknown.


{299} "About the Author", para. 1 now reads as follows:

	Rob Englander is the President and Principal Engineer at
	MindStream Software, Inc., a firm specializing in custom
	software development in Java and C++ for a wide range of
      	application areas.