Polaris Java Interview Questions

Company Name :  Polaris

Interview Questions:
  • Tell me about your self? 
  • Explain OOP's concepts?
  • What  is a transient variable?
  • What is the difference between overloading and overriding?
  • By default, Hashtable is unordered. Then, how can you retrieve Hashtable elements in the same order as they are put inside?
  • What is the difference between Thread class and Runnable interface in Java?
  • Difference between sinchronized block and synchronized method ?
  • Explain Servelet life cycle ?
  • Difference between forward() and sendRedirect() ?
  • How JSP handle runtime Exceptions?
  • What is Secondary level cache in hibernate?
  • What is application in jsp ?
  • How to create the userdefined immutable class ?
  • What is autowiring in spring ?
  • We can get the container obj through Beanfactory and Applicationcontext what is the difference in both ?
  • How to configure Data Source in Weblogic server ?
  • How to get the session object in jsp ?
  • I have 1 to 100 elements in array unordered,one element missed find that one?
HR Questions :
  • Tell me about yourself ?
  • What is your greatest weakness?
  • Why do you want to leave your current employer?
  • Where would you really like to work?
  • What is your current CTC and How much your Expected CTC ?
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