Underscores not supported while using java 7

Hi everyone,

I am beginner on java and i am currently reading and trying a tutorial.
I have an error on running my application that it should not appen ... see the capture. it will explain better than me :)
I don't understand why underscore is not allowed while i am using java 7 in my app ?!

The program telling me to use -source 7 but i don't know how to do :(
Thanks for your help



Attachment(s):
Capture d'écran - 26122012 - 23:34:23.png
2 comments
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Please make sure that the language level in the project structure dialog is set to Java 7.

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\o/ Thanks a lot :)

For people noob like me:

File -> Project Structure -> project tab -> Project language level , choose what you need

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