internship for registered students only. Interns to foreign non-students opens the door to exploitation. Hence this loophole has been plugged.

All German degrees requires mandatory internships (pflichtpraktium) by law and the companies get a tax break for this. Which means almost all companies create internship places for students but in most cases they specify whether this is for a pflichtpraktikum. However, I have heard of cases where some high profile companies like VW or Daimler were able to bring in students from abroad for 6 months international internships. For you being a non-student, this is a non-sequiter. If your ultimate goal is to find a job in Germany I highly recomend some easy Fachhochschule/uni of applied sciences 1 year masters degree where you can find HiWi part-time programming jobs easily that pay around 500 for 10 hours a week of work. Most internships pay similar amounts but for 35-40 hours a week.

one more asking how to exploit the system.

internships are intended for students from germany/international to gain practical experience and not for someone who is experienced to exploit the system.

if you have 2yrs of IT experience and think are good enough then apply to jobs directly in Germany.

-coolguy

Thanks for your suggestions guys. Anyways I don't intend to exploit the system.I just wanted to know whether the approach is the right one !!

Now I prepared my lebenslauf. I will start applying from next month. Will they consider guys with A2 level of German provided rest others skills are ok? 

Also Give me your suggestions for making my lebenslauf better.

A2 will get a consideration if they cannot find a native speaker for any job. They prefer native speaker in general. There are severe shortages in some areas,where they do recruit people with no German knowledge.

That was a polite approach of asking in the forum how to exploit the system. If  you were in Germany earlier on a "Internship" should have known the rules of it.

If you are in the IT filed there are pretty good chances of finiding a job without any Germany langugae requirement.
I suggest to you the job route instead of "internship" route and exploit the system.

-coolguy