title: Is the current path `.` in the classpath by default?
body: <p>Do the second command add the current path as another path for searching?</p>
  
  <pre><code>javac -cp /home/tim/program_files/programming/java/junit-4.11.jar MyTest.java
  
  javac -cp .:/home/tim/program_files/programming/java/junit-4.11.jar MyTest.java
  </code></pre>
  
  <p>Is it the correct way to separate multiple paths, by a colon?</p>
  
  <p>Isn't the current path always in ClassPath by default, and thus no need to explicitly specify?</p>
  
  <p>Thanks.</p>