No output while using static methods inside a class(the class which has no main function in it)

Question

THIS IS MY MAIN CLASS:

public class App {
    public static void main(String[] args){
        Student s1=new Student();
        
    };
    };

THIS IS THE CREATED CLASS:

class Student {
    public static void f1(){
        f2();
    }
    public static String f2(){
        
        return "hello";
    }
    public Student(){
        f1();
    }

}

Now , as i have created an object s1 in main class, the constructor is called ,which has f1() , so f1() is called , now f1() has f2(), so f2() is called , so i think "hello" must be printed but the output is not printed at all(nothing is printed). Can anyone please explain what the reason could be?

Answer 1

There is a difference between printing and returning a value. If you want it to get printed, you should try doing something like this:

class Student {
    public static void f1(){
        f2();
    }
    public static void f2(){
        
        System.out.print("hello");
    }
    public Student(){
        f1();
    }

}

Answer 2

f2() is returning the String, but f1 is not printing it:

public static void f1(){
    System.out.println(f2());
}
public static String f2(){    
    return "hello";
}
public Student(){
    f1();
}