Help me write an application?

Hi,
I have been programming for about 4 years now, mainly in PHP, C++ and AJAX and i have been working in java a little at my current job but want to learn more about it.
I have trying to think of an application that i could write in Java which would be good to do for both: learning more java and hopefully a usefull
application for work.
Im struggling to think of a good idea, so i was wondering if anyone had any good ideas or even want me to do something for them? Nothing major as im quite busy at work, but something i could do to learn more on java and hopefully helpful in general.
Thanks in advance for any suggestions.

I have trying to think of an application that i
could write in Java which would be good to do for
both: learning more java and hopefully a usefull
application for work.That would depend on your work, wouldn't it? :-)
Think of some tedious task that you have to do manually often. Perhaps you can write a program to automate (part of) it.

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