assert keyword(cannot resolve symbol assert)

Question

   GridBlock firstBlock =grid.getEntranceBlock(); //enter through entrance
        assert(firstBlock!=null);

The above assert keyword is flaged by the IDEA and I don't understand why. If i try to compile i get an warning "Warning:(83, 25) java: as of release 1.4, 'assert' is a keyword, and may not be used as an identifier (use -source 1.4 or higher to use 'assert' as a keyword)". As I understand you can use assert without having to import anything. Now i don't understand what I am missing. I tried download new JDK but it didn't help. I m using Intellij

You are missing `-ea` option, see [this](http://stackoverflow.com/questions/18168257/where-to-add-compiler-options-like-ea-in-intellij-idea). — Jean-François Savard, Aug 18 '16 at 20:15
Can you share the surrounding code? My guess is that you have a syntax error somewhere above that line. — Daniel Pryden, Aug 18 '16 at 20:26
I retract my comment, did not realize that it was a warning. So you are compiling with version < 1.4 ? — Jean-François Savard, Aug 18 '16 at 20:32
You did not put the `assert` in a declaration part of the class, did you? — Sergey Kalinichenko, Aug 18 '16 at 20:47
I did. Well I managed to fix it. In Intellij, hit CTRL+SHIFT+ALT+S , then under "Project Language Level" choose a version higher than 1.3. — JVamcas, Aug 18 '16 at 20:53

score 1 · Answer 1 · answered Aug 18 '16 at 20:53

Check what "language level" your project is using: File > Project Structure > Project > Project language level

You might be on a very old level for some reason. If there's no reason to be on it, just try increasing it to something more modern -- this will also give you other very useful language features.

assert keyword(cannot resolve symbol assert)

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