Wednesday 18 January 2012

Java interview questions: – 20 Basic Interview questions on Java? Part: -3.

  • What is Upper bounded wildcards in generics?
  • What is JAR file?
  • What are different types of inner classes?
  • Can we declare an anonymous class as both extending a class and implementing an interface?
  • What is the difference between a static and a non-static inner class?
  • How does Java handle integer overflows and underflows?
  • Does garbage collection guarantee that a program will not run out of memory?
  • What is the purpose of finalization?
  • Can an unreachable object become reachable again?
  • What is a reflection package?
  • What do you mean by immutable? How to create an immutable object?
  • What is class loader in java?
  • What is a weak reference?
  • What is object cloning?
  • What is object pooling?
  • What are marker interface /tag interface?
  • What is the difference between Comparable and Comparator?
  • Does a class inherit the constructors of its superclass?
  • What are annotations used for?
  • What are the annotations used by compiler?
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1 comment:

  1. Your blog is very nice. This is the most basic question, which looks easy at first sight. But, it’s not so. You have to impress the interviewer by just giving him a snapshot of your education, interests and current career situation.

    basic interview questions

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