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Goldman Sachs

Design - Interview Questions and Answers for 'Goldman sachs' - 3 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

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

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Razorthink GST Global USAA Ray Technologies Ray Business Technologies (Raybiztech) Raybiztech Deloitte intermediate frequent}

Related Questions

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

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

Shouldn't we make a class with all static members is its just expected to be executed as a standalone program with just one thread. Moreover Lets assume that there is no runtime Polymorphism required and there is no need for serialization ?

Should we have instance variables in the Spring Bean which has been scoped as Singleton ?

What are stateless objects ? How are they different from immutable objects ? Which of these two is thread safe ?

Action Class is singleton and hence not thread safe in ..

Which of the following is not the difference between Singleton and Static class ( Class with static members only ) ?

Frequently asked in face to face interviews.

Q2. Write a program to print fibonacci series.

Core Java

Ans. int count = 15;
int[] fibonacci = new int[count];
fibonacci[0] = 0;
fibonacci[1] = 1;
for(int x=2; x < count; x++){
fibonacci[x] = fibonacci[x-1] + fibonacci[x-2];
}

for(int x=0; x< count; x++){
System.out.print(fibonacci[x] + " ");
}

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Related Questions

What are the steps to be performed while coding Junit with Mocking framework ?

What is a Sequence File?

What different level of logging you use while coding ?

Have you ever encoded the response before sending it back from the service? If Yes , Which encoding was used ?

What are the different type of encoding you have used ?

How does encoding affect using Reader / writer classes or Stream classes in Java ?

Very Frequently asked to Senior Software Engineers or Developers.

Q3. Describe some of the Design Patterns you have used ?

Design

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Ans. [Open Ended Answer]

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_{Like Discuss Correct / Improve design patterns Goldman Sachs Lexis Nexis Elsevier HCL Technologies Tata Consultancy (TCS) Infosys Technologies Fidelity Investments Nucleus Software Exports General Electric Cognizant (CTS) Amdocs MathWorks Xebia Goldstone technologies Horizon Solutions ECI Telecom One Click Retail intermediate frequent}

Related Questions

What is Dependency Injection or IOC ( Inversion of Control ) ?

What are the Wrapper classes available for primitive types ?

Difference between Factory and Abstract Factory Design Pattern ?

What is MVC ?

What Design pattern Wrapper Classes implement ?

Difference between Factory and Builder Design Pattern ?

Difference between Proxy and Adapter ?

Difference between Adapter and Facade ?

Difference between Builder and Composite ?

Example of Chain of Responsibility Design Pattern ?

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