Core java - Interview Questions and Answers for 'A9.com' | Search Java Interview Question - javasearch.buggybread.com
Javasearch.buggybread.com
Share

Search Interview Questions


 2802 questions in repository.
 There are more than 200 unanswered questions.
Click here and help us by providing the answer.
 Have a video suggestion.
Click Correct / Improve and please let us know.
Label / Company      Label / Company / Text

   



A9.com


   




Core java - Interview Questions and Answers for 'A9.com' - 2 question(s) found - Order By Newest

Very frequently asked. Favorite question in Walk in Drive of many Indian service companies. Frequently asked in HCL Technologies, TCS and Accenture.
  Q1. What is the difference between final, finally and finalize() ?Core Java
Admin
info@buggybread.com
Ans. final - constant variable, objects cannot be de-referenced, restricting method overriding, restricting class sub classing.

finally - handles exception. The finally block is optional and provides a mechanism to clean up regardless of what happens within the try block. Use the finally block to close files or to release other system resources like database connections, statements etc.

finalize() - method helps in garbage collection. A method that is invoked before an object is discarded by the garbage collector, allowing it to clean up its state.

  Sample Code for final

  Sample Code for finally

  Sample Code for finalize

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


   Like      Discuss      Correct / Improve     java   oops   final   finally   finalize     Thomson Reuters  WITS  Antra  Jive  MorningStar  VanGuard   Alcatel Lucent  Morningstar  A9.com  EPAM  Nuance  SirsiDynix  NCR  VanGuard  Proofpoint Interview  Disney  Orbitz Worldwide  GFI Informatique  Canon  WITS  Simba Technologies  Marlabs  American Well  Global Relay  L&T Infotech  HCL Technologies  Tata Consultancy (TCS)  Wipro  Infosys  Accenture  Jive  Salesforce  Deegit  NTT DATA  Proofpoint  Morningstar  Bank Of America  Manhattan Associates  Optum  NorthPoint  Nok Nok Labs  Simba Technologies   Rhino Africa  Solutionreach  V Soft Consulting  EBay  Cognizant (CTS)  IBM  ExactTargetKewill  CV Holdings  Symphony  Cubic Web solutions  Star International  FatWire  Mindteck  Dark Horse  TrueCaller   marlabs      basic        frequent

Try 4 Question(s) Test


Related Questions

  Which of the following combination of keywords is illegal in Java ?

a. static and transient
b. transient and final
c. static and synchronized
d. abstract and final
  Difference between final and effectively final ? Why is effectively final even required ?
  Which keyword is used to provide explicit access of a code block to single thread ?

a. Transient
b. Final
c. Explicit
d. Synchronized
  What is a final method ?
  Enums cannot be declared ..
  What is a Final Variable ?
  Can we override compareTo method for Enumerations ?
  enums are intrinsically ..
 When we say final x = 10, is the reference final or the value ?


 Q2. Write a program to print the index of the first non repeated character in a java stringCore Java2017-01-27 18:30:21

Ans. public class BuggyBread1{
public static void main (String args[]) {
   String str = "hheello world";
   char[] charArray = str.toCharArray();
   char selectedChar = 'a';
   for(char char1: charArray){
      if(!str.contains(Character.toString(char1).concat(Character.toString(char1)))){
         selectedChar = char1;
         break;
      }
   }
   System.out.println(str.indexOf(Character.toString(selectedChar)));
}
}

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

   Like      Discuss      Correct / Improve     string  code  coding     Audible  Bluewolf  WorkDay  Symantec  Rubicon  Amazon  Expedia  A9.com  Google


Related Questions

  How does volatile affect code optimization by compiler?
  Which keyword is used to provide explicit access of a code block to single thread ?

a. Transient
b. Final
c. Explicit
d. Synchronized
 What is the difference between the following two code lines ?

1. new OuterClass().new InnerClass();

2. new OuterClass.InnerClass();
  Which String class does not override the equals() and hashCode() methods, inheriting them directly from class Object?
  If you are given a choice to implement the code to either Insert a Record or Update if already exist, Which approach will you follow ?
  How can we make sure that a code segment gets executed even in case of uncatched exceptions ?
  Will this code give error if i try to add two heterogeneous elements in the arraylist. ? and Why ?
 What is the difference between these two approaches of creating singleton Class ?

//Double Checked Locking Code
public static Singleton createInstance() {
   if(singleton == null){
      synchronized(Singleton.class) {
         if(singleton == null) {
            singleton = new Singleton();
         }
      }
   }
   return singleton;
}

//Single checked locking code
public static Singleton createInstance() {
   synchronized(Singleton.class) {
      if(singleton == null) {
         singleton = new Singleton();
      }
   }
   return singleton;
}
 What is the difference between following two segments of code

Code 1

int x = 4 * 3;
int y = x * 5;

Code 2

int y = 4 * 3 * 5;

 What is the following code doing ?

private static final String[] COLORS = new String[] { "Red", "Green", "Blue" };




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

X Close this

Help Us Improve.
Please share your
interview experience.

Company Name:   


Questions Asked: