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Does read() always return a Complex class, i.e. it can never return NULL? Does Complex.add() always return a Complex class, i.e. it can never return NULL? if NULL is ever returned, a NullPointerException will be thrown.

I think you'll have to expand further your question. Which port are you interested in?

There are a number of reasons what you're trying to do wont work. You added a JTable to the JPanel using jp.add(js), however when you set jt = new JTable(data2,columnNames) you are simply creating another JTable, and setting the jt reference variable accordingly. The panel is still using the...

you cannot set a line length if the FileWriter and PrintWriter classes. To have this feature I would extends the class and provide the functionality you want. For example, you might create a method setMaxLineLength(int l), and override the print(String s) and println(String s) methods. If a...

It appears that MotorVehicle does not have a properly formed clone() method. i.e. it doen't return a useable clone, as it hasn't created an engine. In this case you can either correctly define the clone method in MotorVehicle (if you can!), or instantiate a second Car, and make it have the same...

The regex package is very useful for this.

Usually the stack will be cleaned on method termination, but if some objects were created they are likely to be in the heap not the stack. The stack is usually used to store small things like parameter references, and scalars (will grow large if heavy use of recursive calls is made). These are...

If your reading the data from in input stream you can process as many or as few bytes / chars as you wish. You dont't have to "read a line"

7[0-9]{3} ?

I'm not sure why you have a problem, are you adding a addTreeSelectionListener ? If so you now know which tree node you have selected and then can act accordingly.

Is this a synchronization issue? perhaps you need to block out the handling of the acceptance of the 2nd customer, until the first has been handled/accepted.

That's the whole point of using a seed. Many applications want to have a repeatable random number sequence.

once you've found the "date" you want to display, simply "break;" this will drop you out of the loop. if that's what you wanted to do?

I think most do not understand your question, could you re-phrase it? PS, if you want to know what member variables have been defined (and also their type), look at using Java's java.lang.reflect.Field class. (example http://javaalmanac.com/egs/java.lang.reflect/Fields.html )

are the imagefiles located in the same resource area/directory?

Cheers phosy, the second link seems to provide a good solution. As usual with these things there are usual workarounds ;-)

Hi guys, I'm using Ant to extract files from CVS, Compile, and then use JUnit/JFCUnit to test the application, and then test (using JFCUnit) the User interface. My application requires a test harness (to act as a server to my application) to be started as a separate process, so I thought...

Haven't checked if this does address your question.. but looks like it does http://java.sun.com/j2se/1.4.1/docs/guide/2d/spec/j2d-awt.fm6.html

The InputStream.read() (note System.in is-a InputStream) method has always been declared as throwing an IOException since JDK 1.0. So I guess your reference is incorrect as the developer MUST handle the possibility that an IOException may be thrown when calling System.in.read(). Perhaps the...

me thinks you need to read about http.