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Interview Questions and Answers for '1-800 Contacts' - 3 question(s) found - Order By Newest

  Q1. What is a Lambda Expression ? What's its use ?Core Java
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Ans. Its an anonymous method without any declaration.

Lambda Expression are useful to write shorthand Code and hence saves the effort of writing lengthy Code.

It promotes Developer productivity, Better Readable and Reliable code.

  Sample Code for lambda

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   Like      Discuss      Correct / Improve     java   java8   lambda expression   architecture     Axxess  CACI  ZonOff  Dell India  Wellington Management  N26  Lithium Technologies  DST Systems  Overstock  Sofi  JP Morgan  HCL Technologies  Infosys  Wipro  Accenture  Accenture India  Eurofins  Yodlee  AvenData GmbH  Sapient Global Markets  Walmart  Ebay  Goldman Sachs  Foundation Software  HSBC Holdings  Wells Fargo  Marlabs  ZooPlus  Elastic Path  CardConnect  WealthFront  WorldAware  SpredFast  Mobileum  eGym  EnelX  Kroger  GFT Technoligies  Tyro Payments  Mindtree  KocharTech  Bharti Airtel  Tech Mahindra  Patni Computers  L&T Infotech  Mphasis  Mindtree  Hexaware  Collabera  3i Infotech  IGate  Kpit Technologies  NIIT Technologies  Trianz  Persistent Systems  IT Asset  1-800 contacts      expert        frequent

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Almost sure to be asked in every company using any Dependency Injection framework ( Spring, Guice etc )
  Q2. What is Dependency Injection or IOC ( Inversion of Control ) ?Design

Ans. It is a Design Pattern that facilitates loose coupling by sending the dependency information ( object references of dependent object ) while building the state of the object. Objects are designed in a manner where they receive instances of the objects from other pieces of code, instead of constructing them internally and hence provide better flexibility.

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 Q3. create an SQL query across multiple tables involving outer joins Database2019-01-27 16:06:28

Ans. Select * from table1 t1Left outer join table2 t2 on t1.tid = t2.id

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   Like      Discuss      Correct / Improve     sql query  database  outer joins     1-800 Contacts  Cogent Infotech Corp


Related Questions

 What are Inner , Outer , Left and Right Joins in SQL ?
  Difference between Inner and Outer Join ?
 What is Left Outer Join ?




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