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Interview Questions

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Frequently Asked Java Interview Questions

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Question for Professions

It is one thing to appear for general interviews and another to appear for technical interviews or subject based interviews. These interviews require you to have a thorough knowledge about the various aspects of the subject, to ensure the interviewer that you suit the job.

Listed are some of the most frequently asked ‘ Java Interview Questions’:
  • What is the difference between procedural and object-oriented programs?-
  • What are Encapsulation, Inheritance and Polymorphism
  • What is the difference between Assignment and Initialization?
  • What is the difference between an Interface and an Abstract class?
  • What is the purpose of garbage collection in Java, and when is it used?
  • Explain different way of using thread? Describe synchronization in respect to multithreading.
  • Difference between Vector and ArrayList?
  • What are passby reference and passby value?
  • What is HashMap and Map?
  • Difference between Swing and Awt?
  • What is the difference between a constructor and a method?
  • State the significance of public, private, protected, default modifiers both singly and in combination.
  • What is static in java?
  • What is final?
  • What are Class, Constructor and Primitive data types?
  • What is a reflection package?
  • What is the difference between Integer and int?
  • What is the difference between exception and error?
  • What is the difference between process and thread?
  • What is an applet? What is the difference between applications and applets?
  • What is the difference between scrollbar and scrollpane?
  • What is a clone able interface and how many methods does it contain.
  • What is the difference between String and String Buffer?
  • What is an I/O filter? What is BDK?
  • What is serialization and deserialization?
  • What are JDBCWhat are drivers available? What is the difference between JDBC and ODBC?
  • What is a Java Bean ? What is a ?
  • What is servlet? How are Servlets and JSP Pages related?
  • What are Predefined variables or implicit objects?
 
 
 
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