IntelliJ Idea完成错误

Question

I am new to Idea IDE. After installed it for a few days, I was fascinated with its outstanding features.

However, while I was actually writing code yesterday. I discovered that when the auto completion popped out, it showed nothing about the method of the object , merely some basic template say sync() var() ..... etc.

I have tried to setup the environment (Check the power save ...etc), but those previous solution seems to be for those whose auto-completion is turned off . Is there a way to fix it ?

THANKS IN ADVANCE!!

Answer 1

When you have create your project, you might not have marked it as a Java project and provide a SDK. You can check it in File -> Project Settings -> Project -> Project SDK. If not, you can download the JDK on the Oracle site http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html You can also try to write a

public static void main(String... args) {
    System.out.println("It works !");
}

and write click on the "main" word. You should have a "Run 'Main'" option.