Interview questions

JAVA interview questions – page 5

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

  1. What is Enterprise JavaBeans ?

  2. What does normalization mean for java.sql.Date and java.sql.Time?

  3. Why does EJB needs two interfaces(Home and Remote Interface)

  4. Difference b/w synchronized Method and synchronized statement in case of whole body of method cover by synchronized statement.

  5. Difference between Search Helps and Match Codes

  6. What is JMS session ?

  7. How to do result set on a page where the user can sort on the column headers?

  8. Can every SAP Customer download and install SAP JCo or SAP Java IDoc Class Library free of cost?

  9. How do I set properties for a JDBC driver and where are the properties stored?

  10. What is the difference between Point to Point and Publish/Su

  11. How can I get information about foreign keys used in a table?

  12. How to create client independent tables?

  14. How do I use comments within a JSP page?

  15. There is a method getColumnCount in the JDBC API. Is there a similar method to find the number of rows in a result set?

  16. How do you connect to the database from JSP?

  17. What is J2EE component ?

  18. Do I need a runtime license for running an application that uses the SAP JCo?

  19. What skill sets are necessary to utilize and support SAP JCo? For example, do we need to know Java, SAP RFC and tRFC, IDocs, ALE, etc?

  20. Is there a practical limit for the number of SQL statements that can be added to an instance of a Statement object

  21. What is the diff b/w doGet() and service() method?

  22. Is is true that JAVA is not 100% object oriented language ?

  23. What is JSP container ?

  24. What is the differene between include directive and include action?

  25. Why can't I invoke the ResultSet methods afterLast and beforeFirst when the method next works?

  27. Where can I find info, frameworks and example source for writing a JDBC driver?

  28. Difference between single thread and multi thread model serv

  29. What is the diff.between JDK 1.4 and JDK 5.0?

  30. Why doesn't JDBC accept URLs instead of a URL string?

  31. Can the main() method be overloaded? or overrided? and what happens when we do so?

  32. How can i call parameterized constructor if am instantiating a object using "Class.forName("Abc").newInstance()"?

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