Singletone Class, C#

Singletone Class

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        static Program obj=null;
        private static readonly object objLock=new object();
        private Program(){}
        public static Program GetInstance
        {
            get
            {
               if(obj==null)
                {
                   lock(objLock)
                   {
                       if(obj==null){
                        obj=new Program();
                       }
                       
                   }
                   
                }
                
                return obj;
            }
        }
        
        public static void Main(string[] args)
        {         
             Program obj1=Program.GetInstance;
             Program obj2=Program.GetInstance;
            if(obj1.Equals(obj2))
            {
                Console.WriteLine("same object"+" "+obj1.GetHashCode()+" "+ obj2.GetHashCode());
            }
        }
    }
}


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