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Interview Questions and Answers for 'VMware' - 10 question(s) found - Order By Newest

  Q1. What is a String Pool ?Core Java
Anonymous
Ans. String pool (String intern pool) is a special storage area in Java heap. When a string is created and if the string already exists in the pool, the reference of the existing string will be returned, instead of creating a new object and returning its reference.

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   Like         Discuss         Correct / Improve     java   oops   string   string class   string pool   heap memory     Asked in 31 Companies      intermediate        frequent

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  Q2. Does Java support Multiple Inheritance ?Core Java
Anonymous
Ans. Java doesn't support multiple inheritance. Interfaces does't facilitate inheritance and hence implementation of multiple interfaces doesn't make multiple inheritance.

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   Like         Discuss         Correct / Improve     java   oop   oop concepts   inheritence   multiple inheritence   basic interview question     Asked in 8 Companies      basic        frequent

Try 1 Question(s) Test


  Q3. Why java doesn't support multiple Inheritance ?

or

Explain Java Diamond Problem.
Core Java2017-01-09 11:45:34

Ans. class A {
void test() {
System.out.println("test() method");
}
}

class B {
void test() {
System.out.println("test() method");
}
}

Suppose if Java allows multiple inheritance like this,

class C extends A, B {
}

A and B test() methods are inheriting to C class.

So which test() method C class will take? As A & B class test() methods are different , So here we would Facing Ambiguity.

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   Like         Discuss         Correct / Improve     multiple inheritance  object oriented programming (oops)  oops concepts  diamond problem     Asked in 20 Companies      basic        frequent


  Q4. How is multiple inheritance implemented in Java ?Core Java

Ans. There was no multiple inheritance in java before version 8 as implementing multiple interfaces cannot be termed as inheritance.

With Java 8 , came the concept of default methods wherein the class implementing the interface carries the default implementation from the interface and hence facilitating multiple inheritance.

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   Like         Discuss         Correct / Improve     multiple inheritance  object oriented programming (oops)  oops concepts   inheritance  object oriented programming (oops)  oops concepts   oops concept     Asked in 10 Companies        frequent


 Q5. What is "convention over configuration" ? Which framework uses this design paradigm ?Design2017-05-06 08:14:46

Ans. Convention over configuration is a way of software design used by frameworks that attempt to decrease the number of decisions that a developer is required to make without necessarily losing flexibility. The objective is to reduce the unnecessary configurations and follow conventions to accomplish that. For example - DB Entity and DB Table name conventionally should be same and hence shouldn't require configuring mapping between the two.

"Spring Boot" and "Ruby on Rails" have adopted this design principle.

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   Like         Discuss         Correct / Improve     Convention over configuration     Asked in 1 Companies


 Q6. What is OSGI ?2018-07-13 12:37:34

 This question was recently asked at 'Cerner,Symantec,Adobe,VMWare,Jcr Design Group,Pyramid IT,SEA Software,Amiti Consulting,Ameya Info Technologies,Highbrow Technologies,Coresecure,Analyst Infotech,Holland America,Twin Technologies,DiamondPick,Tanisha Systems,Cengage,Blue Coat,Coxit,LionBridge Technologies,Intersources Inc,Pavlov Media,HumanMinds'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve          Asked in 23 Companies


  Q7. What are the types of authentication used in Web services ?Web Service2018-07-14 11:02:27

Ans. Encrypted User Name / Password
Encrypted Password within Cookie
Encrypted Tokens
IP
Client Certificates
Oauth

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   Like         Discuss         Correct / Improve     authentication  security  web service     Asked in 12 Companies      basic        frequent


 Q8. What are the different types annotations used in TestNG?TestNG2019-01-10 13:21:22

 This question was recently asked at 'VMWare'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve          Asked in 1 Companies


 Q9. How do we achieve parallel execution in TestNG?TestNG2019-01-10 13:21:33

 This question was recently asked at 'VMWare'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve          Asked in 1 Companies


 Q10. Difference between String constant and String non-constant pools?Core Java2019-01-10 13:22:56

 This question was recently asked at 'VMWare'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve          Asked in 1 Companies




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