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| General - Interview Questions and Answers for 'Tcs' - 15 question(s) found - Order By Newest | |||||||||||
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| Ans. OOPs or Object Oriented Programming is a Programming model which is organized around Objects instead of processes. Instead of a process calling series of processes, this model stresses on communication between objects. Objects that all self sustained, provide security by encapsulating it's members and providing abstracted interfaces over the functions it performs. OOP's facilitate the following features 1. Inheritance for Code Reuse 2. Abstraction for modularity, maintenance and agility 3. Encapsulation for security and protection 4. Polymorphism for flexibility and interfacing | |||||||||||
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 Discuss Correct / Improve  oops oops features  Asked in 260 Companies  basic  frequent | |||||||||||
 Basic and Very Frequently asked. | |||||||||||
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| Ans. Polymorphism means the condition of occurring in several different forms. Polymorphism in Java is achieved in two manners 1. Static polymorphism is the polymorphic resolution identified at compile time and is achieved through function overloading whereas 2. Dynamic polymorphism is the polymorphic resolution identified at runtime and is achieved through method overriding. | |||||||||||
 Sample Code for overloading Sample Code for overriding | |||||||||||
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| Discuss Correct / Improve polymorphism object oriented programming (oops) oops concepts oops concepts Asked in 108 Companies Basic frequent | |||||||||||
 Try 2 Question(s) Test | |||||||||||
| Almost sure to be asked in every company using any Dependency Injection framework ( Spring, Guice etc ) | |||||||||||
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| 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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| Discuss Correct / Improve design patterns ioc ( Inversion of Control ) dependency injection Asked in 83 Companies intermediate frequent | |||||||||||
| Frequently asked. Among first few questions in the J2EE segment of interview. | |||||||||||
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| Ans. Deployment Descriptor which is usually web.xml is used to specify the classes, resources and configuration of the application and how the web server uses them to serve web requests.This file is usually added to WEB-INF folder and contains following * Servlet entries and url mapping * Plugins * Some info regarding authentication / filters * Landing Page * Event Handlers | |||||||||||
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| Discuss Correct / Improve web.xml servlets deployment descriptor Asked in 15 Companies basic frequent | |||||||||||
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| Ans. Generalization or UpCasting is a phenomenon where a sub class is prompted to a super class, and hence becomes more general. Generalization needs widening or up-casting. Specialization or DownCasting is a phenomenon where a super class is narrowed down to a sub class. Specialization needs narrowing or down-casting. | |||||||||||
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| Discuss Correct / Improve java data types casting type casting up casting type casting downcasting type casting generalization specialization Asked in 2 Companies | |||||||||||
| Usually asked to entry level software developers. | |||||||||||
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| Ans. public static void main(String[] args) { int num1 = 1; int num2 = 2; num1 = num1^num2; num2 = num1^num2; num1 = num1^num2; System.out.print("num1 = " + num1 +", num2 = "+num2); } | |||||||||||
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| Discuss Correct / Improve code coding Asked in 37 Companies basic frequent | |||||||||||
| Very Frequently asked to Senior Software Engineers or Developers. | |||||||||||
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| Ans. [Open Ended Answer] | |||||||||||
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| Discuss Correct / Improve design patterns Asked in 17 Companies intermediate frequent | |||||||||||
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| Ans. Abstraction is a process of hiding the implementation details and describing only the functionality to the user. | |||||||||||
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| Discuss Correct / Improve bstraction oops concepts oops principle Asked in 22 Companies | |||||||||||
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| Ans. We are using Agile methodology. I attend daily stand up where the development leads takes the status of assigned stories, achievements, any bottlenecks or challenges. We follow iteration of 2 weeks. | |||||||||||
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| Discuss Correct / Improve sdlc agile methodology software system analyst software developer interview development lead project lead interview Asked in 14 Companies frequent | |||||||||||
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| Ans. I am working as a Software System Analyst that specializes in understanding Business Requirements, Analyzing them , Performs Cost / Benefit analysis, Make suggestions to business , translate the business requirements into technical requirements, Discuss their feasibility with the technical team, performs sizing in coordination with developers and prepare high level design document. | |||||||||||
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| Discuss Correct / Improve system analyst software system analyst software business analyst Asked in 4 Companies frequent | |||||||||||
| Frequently asked in face to face interviews. | |||||||||||
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| 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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| Discuss Correct / Improve ebay fibonacci series Asked in 66 Companies basic frequent | |||||||||||
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| Ans. <a href="http://javahungry.blogspot.com/2015/03/difference-between-array-and-arraylist-in-java-example.html" rel="nofollow">http://javahungry.blogspot.com/2015/03/difference-between-array-and-arraylist-in-java-example.html</a> | |||||||||||
| Sample Code for ArrayList | |||||||||||
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| Discuss Correct / Improve array arraylist Asked in 11 Companies basic frequent | |||||||||||
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| Ans. [Open Ended Answer] The objective of the question is to check how efficient one is in the language so that appropriate level questions are asked. Don't tell too high number if you are being interviewed for a junior or mid level position as the interviewer may throw advance level questions. | |||||||||||
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| Discuss Correct / Improve Asked in 17 Companies | |||||||||||
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| Ans. There are four main OOP concepts in Java. These are: Abstraction. Abstraction means using simple things to represent complexity. We all know how to turn the TV on, but we don?t need to know how it works in order to enjoy it. In Java, abstraction means simple things like objects, classes, and variables represent more complex underlying code and data. This is important because it lets avoid repeating the same work multiple times. Encapsulation. This is the practice of keeping fields within a class private, then providing access to them via public methods. It?s a protective barrier that keeps the data and code safe within the class itself. This way, we can re-use objects like code components or variables without allowing open access to the data system-wide. Inheritance. This is a special feature of Object Oriented Programming in Java. It lets programmers create new classes that share some of the attributes of existing classes. This lets us build on previous work without reinventing the wheel. Polymorphism. This Java OOP concept lets programmers use the same word to mean different things in different contexts. One form of polymorphism in Java is method overloading. That?s when different meanings are implied by the code itself. The other form is method overriding. That?s when the different meanings are implied by the values of the supplied variables. See more on this below. | |||||||||||
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| Discuss Correct / Improve oops oops concepts Asked in 16 Companies basic frequent | |||||||||||
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| Ans. The most effective and acceptable reasons for leaving your current job should be positive e.g. moving forward in your life or career | |||||||||||
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| Discuss Correct / Improve Asked in 21 Companies | |||||||||||
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Static Polymorphic in Java is achieved through .. 
