title: Changing the package name in all the java files to the existing package in eclipse
body: <p>I have created some package. I had java files from previously created package. Now, I want to change the name of package inside all java files to the package i just created in eclipse. How to do that?</p>
  
  <p><img src="https://i.stack.imgur.com/b4BF9.png" alt="image"></p>