Interview questions

JAVA interview questions – page 69

2,804 questions. Tap “Show answer” to check yourself.

  1. What is mutex?

  2. Write a program to create an arraylist and listeterator.and value should be enter through keyboard.

  3. How to find the kth smallest element in the given list ofarray elemnts.

  4. What are the boundaries of jdk and jre?

  5. I dont want to use serialzable in java is there any another concept so plz tell me

  6. How to find greatest of n numbers!

  7. What is Restrictions in hibernate?

  8. What are batch updates. in jdbc

  9. How the mapping can be done from jsp to actionservlet?

  10. Iterator in the HashMap is fail-safe means what?

  11. Differences between jdk 1.4 and 1.5

  12. How to connect oracle with java ? Give detail explanation.

  14. What is the difference between AWT & Swing?

  15. Write a postfix expression to (a*(b+c/d)*d-e)

  16. Difference between javaBeans and Enterprise JavaBeans?

  17. How to invoke an URL on clicking a button in Applet

  18. Explain class A{}class B{}class C{}all the three classes are saved in a single file name, whatthe name should i provide to the file ,in what file nameshould i run the program? Ple Explain

  19. Difference between Reader/Writer and InputStream/Output Stream?

  20. What is difference between JVM (Java Virtual Machine) and CLR (Common language Runtime) ?

  21. Can we add default constructor to Servlet?

  22. What is jdbc?

  23. Why use jsp over servlet.what is the benefit of jsp over servlet?

  24. What is mean by overriding in which situation we wil use?

  25. Why do you want to specify the REGION parameter in a JCL step?

  27. IS is thread or process ?

  28. What is thin driver and thick driver. why it is called so?

  29. String is an immutable object.Then how can the following code be justified.String s1 = ?ABC?;String s1 = s1+?XYZ?;s.o.p(s1);The output is ABCXYZ, which is the value of s1 ?

  30. What is Hashmap & Hashtable wirh example?

  31. I have DATE filed like DD-MM-YYYY, So I want output should be MM/DD/YYYY using JCL?

  32. What is MIDlet ?

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