Вопрос

I got this error when creating a final double using underscores to make the double more readable. It was declared in a run() method.

public void run() {        
    final double nanoSeconds = 1_000_000_000.0 / 60.0;    
}

I'm using IntelliJ IDEA 12.

Это было полезно?

Решение

In IntelliJ IDEA you have to change Project language level in project settings to 7.0 level:

enter image description here

Другие советы

Yes..you need to change the default language level settings if you are using and IDE. For IntelliJ users it is under File --> Project Structure --> Projects.

I found with my project that had modules, I had to do this in the modules settings as well.

Modules project settings

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