title: packing the packages in a jar file with a manifest file
body: <p>I have 4 packages each containing some <code>.class</code> files. There is one package that contains <code>main</code> class. How do i create a jar file packed with all the folders and the manifest file ?</p>
  
  <p>I know the command <code>jar cvfm MyJar.jar manifest.txt *.class</code> , but i don't know the procedure to pack all the folders with their class files.</p>
  
  <p>Here is the scene :</p>
  
  <p><img src="https://i.stack.imgur.com/NzEVR.jpg" alt="enter image description here"></p>
  
  <p>Also where shall i place the <code>manifest</code> file ?</p>