Java - Interview Questions and Answers for 'Keystone' | Search Java Interview Question - javasearch.buggybread.com
Javasearch.buggybread.com
Share

Search Java Interview Questions


 2137 questions in repository.
 There are more than 200 unanswered questions.
Click here and help us by providing the answer.
Label / Company      Label / Company / Text

   



Interview Questions and Answers for 'Keystone' - 1 question(s) found - Order By Newest

Very frequently asked in different variations. Frequently asked in Deloitte ( 2 feedback ) , HCL Tech ( 3 feedback ) and Coginizant (CTS)
  Q1. Explain the scenerios to choose between String , StringBuilder and StringBuffer ?

or

What is the difference between String , StringBuilder and StringBuffer ?
Core Java
Anonymous
Ans. If the Object value will not change, use String Class because a String object is immutable.

If the Object value can change and will only be modified from a single thread, use StringBuilder because StringBuilder is unsynchronized(means faster).

If the Object value may change, and can be modified by multiple threads, use a StringBuffer because StringBuffer is thread safe(synchronized).

  Sample Code for String

  Sample Code for StringBuffer

  Sample Code for StringBuilder

 Help us improve. Please let us know the company, where you were asked this question :   

   Like      Discuss      Correct / Improve     java   string class   string   stringbuilder   stringbuffer     Cognizant (CTS)   San Jose State University (SJSU)  HCL Technologies   Deloitte  Sophos  Hitachi  JPMorgan Chase  IBM  Kony Labs  Keystone  ebay  TIAA Financial Services  Ancestry      basic        frequent

Try 3 Question(s) Test


Related Questions

  Difference between == and .equals() ?
  Why is String immutable in Java ?
  What are different ways to create String Object? Explain.
  Why Char array is preferred over String for storing password?
  What is a String Pool ?
  What is the difference between StringBuffer and String class ?
  What is StringJoiner ?
 Which of the following is false about main method ?

a. It should be declared public and static
b. it should have only 1 argument of type String array
c. We can override main method
d. We can overload main method
 What is the difference between these two method declarations ?

private static void method(String[] arg)

and

private static void method(String... arg)




Subscribe to Java News and Posts. Get latest updates and posts on Java from Buggybread.com
Enter your email address:
Delivered by FeedBurner



comments powered by Disqus
 

Help us and Others Improve. Please let us know the questions asked in any of your previous interview.

Any input from you will be highly appreciated and It will unlock the application for 10 more requests.

Company Name:
Questions Asked:
         

X Close this

1 person from Ashburn are looking for questions for 'Keystone'. Connect with them to better prepare for your interview.
X Close this

Help Us Improve.
Please share your
interview experience.

Company Name:   


Questions Asked: