Abstraction query

Question

Dear All,

 

I get a code, which is given below:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace DemoApplication
{
abstract class Tutorial
{
public virtual void Set()
{
}
}
class Guru99Tutorial:Tutorial
{
protected int TutorialID;
protected string TutorialName;
public void SetTutorial(int pID,string pName)
{
TutorialID=pID;
TutorialName=pName;
}
public String GetTutorial()
{
return TutorialName;
}
static void Main(string[] args)
{
Guru99Tutorial pTutor=new Guru99Tutorial();
pTutor.SetTutorial(1,".Net");
Console.WriteLine(pTutor.GetTutorial());
Console.ReadKey();
}
}
}

In this example, there is no abstract method. and use only virtual method.

 

So we can use abstract class without abstract method? Please clear in brief.

 

Thanks and Regards

Ankit Shukla