title: How to create jar file with package structure?
body: <p>I have a folder structures</p>
  
  <pre><code>/com/cdy/ws/a.class files
  /com/cdy/ws/b.class files
  /com/cdy/ws/c.class files
  </code></pre>
  
  <p>When I run the following command “jar cvf asd.jar *.class” it gives jar with all the class files.
  But the folder structure is not getting generated. All the class files have to be under “com.cdy/ws” but all the classes are in same level of META-INF.
  Can anyone tell me what is the command to generate the package structure?</p>
  
  <p>Thanks</p>