Oracle Java Interview Questions for 3 year Experience

Oracle Java Interview Questions for 3 year Experience

The interview process is bit confusing and lengthy. You will be called for f2f interview but the 1st round will be paper pen test. Below are the question which will be asked to you.

  1. Does it matters to catch the FileNotFoundException and IOException in catch block?
  2. How to find odd/even without using % & /   ?
  3. How to check for null without using null check to avoid NullPointerException?
  4. Which design pattern can be used for Property File?
  5. Which design Pattern can be used for Complex object?
  6. Design pattern for different Representation object?
  7. String and String Buffer questions for outputs
  8. test(Object obj){ } and test(String s){} two overridden methods if we call test(null). Which method will be called test(obj) or test(s)?
  9. @Path, @PathQuery,@QueryParam use and difference.
  10. Spring Bean scope.
  11. Write a program to show alert with input field value using javascript.
  12. What is Content Type and accepts in http response.
  13. console.log(‘1’+’2’+’1’); console.log(1++’2’+’1’); console.log(1-+’1’+’1’);console.log(1-‘2’+1); Output of all 4.
  14. Time complexity of 3 for loops inside one another.
  15. What are the scope of javascript variables.
  16. Analyze Garbage Collector graph. What is x and y axis resembles? What bold and dotted line Shows?
  17. Access specifier for samepackage access.
  18. Swap two numbers without using 3rd variable.

Next Round of interview questions will be in next upcoming Post.

2 Replies to “Oracle Java Interview Questions for 3 year Experience”

  1. Hi There,

    Great info! I recently came across your blog and have been reading along.
    I thought I would leave my first comment. I don’t know what to say except that I have
    Some guys commented to me the Log4J to solve the subject of log of transactions… Is it good??!! :confused:

    Does somebody know the Log4J API?, I would need some basic documentation to start…
    or some other solution that you used.

    They have commented to me that has different types or levels of error, that it is very useful because priority can be given it the most important errors.
    Great effort, I wish I saw it earlier. Would have saved my day 🙂


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