Interview questions

JAVA interview questions – page 74

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

  1. Instead of writing Home, Remote Interfaces if i directly extends EJBObject to bean class what happens?

  2. Can we have more than one action servlet?

  3. Write down program for following scenario. Use java codingstandard.You have array list with some words in it..we will call itas dictionary?.and you have a arbitrary string containingsome chars in it.You have to go through each word of dictionary and find outif that word can be constructed with the help of chars fromarbitrary string given. If you find the word print it elseprint none.

  4. What is bytecode ?explain in detail and watz the difference between bytecode and machine code?

  5. How to pass parameters to Actions

  6. What will happen if we cannot mention "finally" in JavaProgram ?

  7. Difference Between Web Server and Application server ?

  8. Is it possible to implement an interface to a structure? Isit possible to extend a struct? Is it possible to inherit aclass to struct?

  9. What is JUNIT

  10. How can u know the current date using jcl?

  11. What does a constructor does.

  12. Explain session tracking. why we used it

  14. How we can say java is platform independent, while we require JVM for that particular Operating System?

  15. When we create singleton design then we create privateconstructtor..so how JVM take private constructor to makeobject..but it's private..

  16. What is the use of static import ?

  17. What is difference between tax invoiced & retail invoice

  18. Can we create object for static class in java

  19. Can we iterate through collection using for loop?

  20. Can we make a database connection from HTML ?

  21. How to make a jsp page threadsafe?

  22. How can server communicate with more than one client

  23. Can we define constructors in Servlet?

  24. What is stub?

  25. In Java why we write public static void main(String args[])why not main()?

  27. How to create clint-server socket?

  28. What is the need of the Ajax?

  29. What is the difference between pagecontext and servletcontext?

  30. How can I deploye a 'QTP Runtime environment only'

  31. Boxing means converting value type to reference type andunboxing means converting reference type to value type.whywe need boxing and unboxing?

  32. How can connection with oracle10g with java

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