Can main method be placed inside inner class of a class in java?

Asked Dec 01 '21 at 16:25

Active Dec 03 '21 at 09:45

Viewed 43 times

Why should main method reside inside a class not inner class in java?

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.scene.layout.Pane;

class EnclosingClass{
   static class InnerClass extends Application{
      @Override
      public void start(Stage primaryStage) throws Exception {
         primaryStage.setScene(new Scene(new Pane(), 100,100));
         primaryStage.show();
      }

      public static void main(String[] args){
         launch(args);
      }
   }
}

Especially when it inherits from super class.

edited Dec 02 '21 at 15:33

asked Dec 01 '21 at 16:25

Yadav Dhakal

2

Did you try to compile it? If not, why not? – Michael Dec 01 '21 at 16:25
Before Java 16 we couldn't have static methods in inner class. But now we can. – Pshemo Dec 01 '21 at 16:27
I am using eclipse. It gives error: Error: Main method not found in class EnclosingClass, please define the main method as: public static void main(String[] args) – Yadav Dhakal Dec 01 '21 at 16:27
I am using Java-11 – Yadav Dhakal Dec 01 '21 at 16:28
@YadavDhakal So that answers your first question: no (on the version of Java you are using). – Michael Dec 01 '21 at 16:28
It could be javafx error actually the static nested class was inheriting from Application – Yadav Dhakal Dec 02 '21 at 15:34
How did you try to run your application? – Mark Rotteveel Dec 03 '21 at 09:40
Also, as a point of terminology, your code doesn't have an inner class, but a nested static class. – Mark Rotteveel Dec 03 '21 at 09:43
Through eclipse IDE. – Yadav Dhakal Dec 06 '21 at 15:04

Can main method be placed inside inner class of a class in java?

0 Answers0