title: Import multiple classes from one package
body: <p>What difference between</p>
  
  <pre><code>import java.util.ArrayList;
  import java.util.List; //1
  
  import java.util.*; //2
  </code></pre>
  
  <p>Will I import all classes from <code>java.util</code> in case 2 or only necessary? Is additional bytes will be added to class file in this case?</p>