Fix an error in my code

Question

I keep on getting an exception in main java.land.noSuchMethod :Main running this program. It compiles with no errors.
What could be wrong?
I am trying to print volume and weight value generated by random().
I also want to keep the current format of my code.
Thanks
public class Fedex
     public static int volume;
     public static int weight;
          public Fedex()
               double volume=(Math.random() * 10);
               double weight=(Math.random() * 10);
          public Fedex(int volume, int weight)
               super();
          public int getVolume()
               return volume;
          public int getWeight()
               return weight;
          public String toString()
               return new String("volume: " + volume +"    weight: " + weight);
     public void main(String[] args)
          System.out.println(toString());
}

Answer 1

Make the Main method static.
public static void main(String[] args)however with this you'll have to create an instance of your class, and call toString() from that.