Alt+Enter does not work properly IntelliJ

Question

I used the shortcut Alt+Enter to get problem solutions for specific errors or context. For example:

package test;

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String line = reader.readLine();
    }
}

and Alt+Enter was supposed to change

public static void main(String[] args) 

to

public static void main(String[] args) throws IOException

and import java.io.InputStreamReader;.

If I make the following code:

int sizeA = 5;
int sizeB = 50;
int area = calculateArea(sizeA,sizeB);

Alt+Enter was supposed to make a Method for me where I make the calculations.

Now I have a fresh installation of IntelliJ Community Edition, using JDK 9 and the shortcut doesn't work anymore. All Alt+Enter does is call the "Generate" tab where I can generate methods like toString() or hashCode() or constructors.

Any solutions?