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| Interview Questions and Answers for 'United Health Group (UHG)' - 11 question(s) found - Order By Rating | ||||
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| Ans. Init -> service -> destroy. Out of these, init and destroy are called once per servlet whereas service is called every time when a request is made to the servlet. | ||||
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 Discuss Correct / Improve  servlet  Asked in 6 Companies | ||||
 Frequently asked in high end product companies. | ||||
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| Ans. https://www.geeksforgeeks.org/lru-cache-implementation/ | ||||
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Discuss Correct / Improve cache LRU cache coding code Asked in 10 Companies  intermediate | ||||
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| Ans. class Bank { int balance; Bank(){ balance = 0; } void deposit(int amount){ balance = balance amount; } int withdraw(int amount){ balance = balance - amount; return balance; } } | ||||
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| Discuss Correct / Improve Asked in 1 Companies Basic | ||||
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| Ans. https://en.wikipedia.org/wiki/Database_normalization | ||||
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Discuss Correct / Improve normalization database Asked in 35 Companies intermediate  frequent | ||||
| Frequently asked in high end product companies. Frequently asked in Deloitte. | ||||
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| Ans. https://medium.com/javarevisited/internal-working-of-hashmap-in-java-97aeac3c7beb#:~:text=HashMap%20internally%20uses%20HashTable%20implementation,the%20entries%20into%20the%20map. | ||||
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| Discuss Correct / Improve hashmap collections hashmap internal implementation Asked in 20 Companies expert frequent | ||||
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| Ans. [Open Ended Answer] This is a very sensitive question and should be dealt with caution. Just simply saying that you never had any disagreement will present you as dumb team member. Showing your self as too aggressive in such decisions will present you as a trouble maker. You should present a situation where you had an argument / disagreement but eventually you and your team mates mutually found a way out of it. | ||||
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| Discuss Correct / Improve Asked in 20 Companies basic | ||||
| Very Frequently asked to fresh graduates and less experienced. Favorite question in Walk in drives. Frequently asked in Indian Services companies. | ||||
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| Ans. Overloading - Similar Signature but different definition , like function overloading. Overriding - Overriding the Definition of base class in the derived class. | ||||
 Sample Code for overloading Sample Code for overriding | ||||
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| Discuss Correct / Improve java oops overloading overriding oops concepts basic interview question overloading vs overriding Asked in 86 Companies basic frequent | ||||
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| Very frequently asked. Usually difference between String,StringBuffer and StringBuilder is asked in different variations. | ||||
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| Ans. StringBuffer is synchronized whereas StringBuilder is not. | ||||
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| Discuss Correct / Improve java string stringbuffer string class stringbuilder synchronized basic interview question infosys technologies Asked in 17 Companies basic frequent | ||||
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| Very frequently asked.Usually among first few questions. | ||||
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| Ans. MVC is a Design Pattern that facilititates loose coupling by segregating responsibilities in a Web application 1. Controller receives the requests and handles overall control of the request 2. Model holds majority of the Business logic, and 3. View comprise of the view objects and GUI component | ||||
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| Discuss Correct / Improve j2ee mvc mvc design pattern design pattern struts spring web application web frameworks ebay Asked in 60 Companies basic frequent | ||||
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| Ans. Lazy fetching is the technique of not loading the child objects when parent objects are loaded. By default Hibernate does not load child objects. One can specify whether to load them or not while doing the association. | ||||
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| Discuss Correct / Improve hibernate lazy fetching architecture Asked in 11 Companies frequent | ||||
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| Very Frequently asked. Have been asked in HCL Technologies very frequently ( based on 3 feedback ). Among first few questions in many interviews. | ||||
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| Ans. Abstract classes can have both abstract methods ( method declarations ) as well as concrete methods ( inherited to the derived classes ) whereas Interfaces can only have abstract methods ( method declarations ). A class can extend single abstract class whereas it can implement multiple interfaces. | ||||
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| Discuss Correct / Improve java classes abstract class interfaces abstract class vs interface abstract classes vs interfaces Asked in 82 Companies basic frequent | ||||
Which of the following can be overridden ?
