Design - Interview Questions and Answers for 'Centurylink' | Search Interview Question

Design - Interview Questions and Answers for 'Centurylink' - 2 question(s) found - Order By Newest

Very frequently asked. Usually followed by questions related to private constructor and synchronized access. Frequently asked in JPMorgan and TCS (Based on 2 feedback)

Q1. Explain Singleton Design Pattern ?

Design

Ans. http://www.buggybread.com/2014/03/java-design-pattern-singleton-interview.html

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Related Questions

Difference between Static and Singleton Class ?

What is the difference between Singleton and Prototype Bean scope in Spring ?

serialization and deserialization of singleton class

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 are design situations to use Singleton and Prototype Design Pattern ?

How to avoid cloning, serialization in the singleton class ?

When singleton can break and how to resolve it

If you are given choice to either load object eagerly or lazily , which one would you use in case of singleton pattern ?

When should we use prototype scope and singleton scope for beans ?

Q2. Can you tell us a use case of reflection in java that you have applied ?

Design

^{This question was recently asked at 'CenturyLink'.This question is still unanswered. Can you please provide an answer.}

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Related Questions

What is reflection ?

How can we test methods individually which are not visible or declared private ?

Is It Good to use Reflection in an application ? Why ?

Why is Reflection slower ?

What is the use of MethodHandle ?

How Reflection can break any design pattern ?

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