title: Where to put the external jars?
body: <p>I use Eclipse (3.4) and my class compiles without warning or errors.
  My project uses an external jar file.</p>
  
  <p>Where do I need to put this external jar file in order not to get a <code>java.lang.NoClassDefFoundError</code> when using this class from another project (not in Eclipse)?</p>
  
  <p>I could just extract the jar into the project folder, but that does not feel right.</p>
  
  <p>Edit: this question is not about importing jars in Eclipse, but using them outside of Eclipse.</p>