title: What is use of MANIFEST.MF in WAR/JAR/EAR?
body: <p>I am aware of usage of MANIFEST file in a mobile application, but am not aware of usage of same in a Java Application. </p>
  
  <p>My guess say like, its being used to keep BUILD information only. Am I correct??</p>
  
  <p>Is this Mandatory?If not, then what are the key benefits that we can draw with this?</p>