title: Can I launch android app with default package name given by android studio?
body: <p>i started working on a project on android studio , initially i didn't know if I would go to launch the app so i let the package name be the same as given by android studio by default ( it was <strong>com.example.abhishek.tv</strong> ) . 
  Now I'm done with the app and want to launch it but here I got stuck as I'm having my domain name as <strong>abhishekint.16m.com</strong> but i don't know to change the default package name given by android studio . </p>
  
  <p>I have three problems here </p>
  
  <ol>
  <li>I don't know to change the package name efficiently and <strong>SAFELY</strong>. I'm reluctant while changing the package name after reading some of the stackoverflow links as I was not clear with the answer and package name seems very sensible as it can ruin the whole project if not done properly .</li>
  <li>My original domain name has numerics and I found after searching online that there is something abnormal with the numeric domain name .</li>
  <li>One more thing , as I've this app which has some of the videos from youtube so in case if I choose to change the package name of my project then will I have to change the package name of the API_KEY that i got after fingerprinting while getting the youtube API .</li>
  </ol>