class Main {
    public static void main(String[] args) {
        new Application();
    }
 
    static class Application {
        static boolean alreadyRunning = false;
 
        Application() {
            if (alreadyRunning) {
                System.out.println("Already running.");
                return;
            }
 
            alreadyRunning = true;
            System.out.println("Starting recursive instance, just ’coz.");
            new Application();
            System.out.println("That was easy. And pointless.");
        }
    }
}

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