NetBeans Java autocomplete and compilation what's the problem?

Question

NetBeans

First question. I press Ctrl + space, the auto-suggest does not come out, writes No suggestions. In the editor of the editor put the Java language restarted all the same "No suggentions".

Second question. Here is the usual output of the text

package javaapplication1;
public class JavaApplication1 {

  
    public static void main(String[] args) {
        System.out.printf("Hello world!");
    }
    
}

In the output it says

run:
BUILD SUCCESSFUL (total time: 0 seconds)

but does not display the text that I check. In the online compiler on the site, everything outputs there.

Answer 1

Good afternoon.
Switch to Intellij Idea Community Edition (it's free).
https://www.jetbrains.com/ru-ru/idea/
Well, or Eclipse.