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Interview Questions and Answers for 'Xactly' - 3 question(s) found - Order By Newest

  Q1. What is coupling and Cohesion ?Design
Ans. Coupling is the degree of interdependence between software modules, a measure of how closely connected two modules are or the strength of the relationships between modules.

Cohesion refers to the degree to which the elements of a module belong together. Cohesion measures the strength of relationship between pieces of functionality within a given module.

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   Like         Discuss         Correct / Improve     coupling  cohesion     Asked in 10 Companies        frequent

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 Can you explain software design principles cohesion and coupling with an example?
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Very frequently asked. Usually asked with questions related to String. Frequently asked at CTS / Cognizant
  Q2. What is an Immutable Object ?Core Java
Ans. Object that can't be changed after instantiation.

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   Like         Discuss         Correct / Improve     java   oops   immutable  immutability     Asked in 27 Companies      basic        frequent
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  What are stateless objects ? How are they different from immutable objects ? Which of these two is thread safe ?

 Q3. Give an Example for Builder Pattern ?Core Java
Ans. String str = new StringBuilder().append("Buggy").append("Bread").toString();

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   Like         Discuss         Correct / Improve     java   builder pattern   design pattern   stringbuilder   string     Asked in 3 Companies
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Related Questions
  Explain the scenerios to choose between String , StringBuilder and StringBuffer ?

or

What is the difference between String , StringBuilder and StringBuffer ?
  Difference between StringBuffer and StringBuilder ?
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 Can StringBuffer and StringBuilder in Java be inherited?
 Do we have a method to reverse a string in String class ?

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