public interface product {
    
    public void createProduct();

}

public class concreteProduct implements product {

    @Override
    public void createProduct() {
        // TODO Auto-generated method stub
        System.out.println("create product");
        
    }

}

public abstract class factory {
    
    protected abstract product factoryMethod();
    
    public void someOptions() {
        
        product prod = factoryMethod();
        prod.createProduct();
    }

}

public class concreteFactory extends factory {

    @Override
    protected product factoryMethod() {
        // TODO Auto-generated method stub
        return new concreteProduct();
    }

}

public class user {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        factory fctry = new concreteFactory();
        fctry.someOptions();

    }

}