title: can anyone explain me the functionality of tools.jar( which is bundled in jdk/lib folder) and why it's required?
body: <p>I have come across with tools.jar file in java.So,want to know about it that what exactly it is used for?I have search a lot but can't find a doc.
  It will really helpful if someone can specify me its details as i am new to java.
  Thanks.</p>