I've a project to do but I don't know which language to use. I want it as a Windows application, with graphics, not as a console application. Can I do it using C? Are there any libraries I can use for this? Do you have any in mind and how can I use it? Is it harder in C than in Java? I'm asking you because I know C but I have no idea about Java. What do you think, should I start learning Java or use C using the libraries?

Opinion: Both. Either way, learning the library use will be necessary. Java might be easier, but "die-hard" C enthusiasts would probably say "go C".

__________________
Use the force...read the source!!
WYCIWYG -- what you code is what you get!

Java has Swing, which is it's built-in GUI library. However, it's not pretty and I've heard it's difficult to work with.

C lets you use just about anything: Qt, GTK, et al. Though as TurboPT said, you'll still have to learn the library.

Personally, if you already know C and are comfortable with it, I'd recommend just finding a GUI library you like. Check out Qt; it seems reasonably easy to learn if you're experienced.

__________________
Common Sense v2.0-Striving to make the world a little bit smarter.

The advantage to using java is that you can run it on any platform that has a java virtual machine (windows/linux/etc.). If you already know C, java will be extremely easy to learn (no memory management). You should be able to find a "drag and drop" graphical IDE for either language.

i agree with this guy if you know it then use it

I guess it depends on what kind of application you're trying to build and how much time you have.
If you want a fast application and you have plenty of time, I would suggest going with the C/C++ language and the Win32 API since this combination won't have as much overhead as Java and any other Java GUI library.
If you don't have that much time and hate Java as much as I do , I would recommend C++ and the Qt Toolkit which is a powerful combination for fast GUI development even though it has some overhead.

Good luck!

For Windows application, Java has nothing to do here.
use C/C++ and Win32 apis

Just out of curiosity, when would you use Java?

Cross platform apps, most frequently. Otherwise Java is popular for enterprise apps due to the J2EE toolkit. But if your keeping your programs on a single platform, use whatever language you want.

__________________
Common Sense v2.0-Striving to make the world a little bit smarter.