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Interview Questions and Answers - Order By Newest

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 Q2481. What is MVC in GUI components ?Design
Ans. The Model/View/Controller pattern, a strategy for dividing responsibility in a GUI component.

The model is the data for the component.

The view is the visual presentation of the component on the screen.

The controller is responsible for reacting to events by changing the model.

According to the MVC pattern, these responsibilities should be handled by different objects.

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   Like         Discuss         Correct / Improve     mvc  design pattern     Asked in 1 Companies        rare


 Q2482. Can you name some of the field which you set while configuring a Jenkins Job ?Jenkins
Ans. Project Name , Type , Repository information , JDK, Build Triggers , Release build , Pre Build and Post Build steps.

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 Q2483. Can we have a Jenkins job that would build from different project branches in SCM ?Jenkins
Ans. Yes , there is a facility to provide wild cards within repository branches to build. It will pick any branch for build that matches the wild card.

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 Q2484. What version of Maven are you working with ? Are you aware of changes in the most recent version of Maven ?Maven
Ans. 3.3.9

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 Q2485. Please explain with example different types of testing ?Testing
Ans. Unit Testing ( Junits )
Integration Testing ( Testing overall flow by calling the entry method or by calling the service end point )
Manual Testing ( End to End Manual User Testing, they way eventually it will be used by end users )
Automation Testing ( Machine replication of end to end testing )

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   Like         Discuss         Correct / Improve           basic        frequent


 Q2486. What is the difference between Maven and Jenkins ? Tools
Ans. Maven is a build tool whereas Jenkins is continuous integration system.

Maven deals with application compilation, build and packaging whereas Jenkins tracks SCM for triggering builds and packages, triggering parent project builds upon dependencies, initiating builds and performing alerts. So Jenkins is kind of a wrapper around SCM and Build Tool for continuous integration and deployment.

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   Like         Discuss         Correct / Improve     maven  jenkins  build tools


 Q2487. Can we use Prototype Bean scope with Autowiring ?Spring
Ans. Default Bean scope in auto wiring is Singleton but Yes, that can be changed by specifying the Bean scope explicitly.

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   Like         Discuss         Correct / Improve     spring boot   spring mvc  autowiring  bean scope   prototype bean scope      intermediate


 Q2488. How to calculate string length without using inbuilt functionCore Java
 This question was recently asked at 'Softenger'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     code  coding  design  string length     Asked in 1 Companies      basic


  Q2489. Write code to sort an array.Algorithm
Ans. https://www.geeksforgeeks.org/arrays-sort-in-java-with-examples/

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   Like         Discuss         Correct / Improve     array  sorting     Asked in 16 Companies      basic        frequent


 Q2490. What is the difference between abstraction and abstract class ?Core Java
Ans. Abstract class is one of the facility for achieving abstraction in Java.

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   Like         Discuss         Correct / Improve          Asked in 1 Companies


 Q2491. Write code to print a Pyramid pattern ?Core Java
Ans. public static void printTriagle(int n)
{
// outer loop to handle number of rows
// n in this case
for (int i=0; i1; j--)
{
// printing spaces
System.out.print(" ");
}

// inner loop to handle number of columns
// values changing acc. to outer loop
for (int j=0; j<=i; j )
{
// printing stars
System.out.print("* ");
}

// ending line after each row
System.out.println();
}
}

// Driver Function
public static void main(String args[])
{
int n = 5;
printTriagle(n);
}

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 Q2492. If your application has multiple databases, how many changes you have to made in Hibernate? Hibernate
Ans. If you have mulitple Databases you just need to add multiple configuration files and create the corresponding SessionFactory object.

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   Like         Discuss         Correct / Improve          Asked in 1 Companies


 Q2493. If SOAP is more secure than Rest, Why many applications today use Rest ?Web Service
Ans. SOAP supports only xml whereas Rest support many other formats.

Rest services are very light weight compared to SOAP.

SOAP services are code heavy as they require creation. of stubs and skeltons.

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   Like         Discuss         Correct / Improve     soap  rest  soap vs rest     Asked in 2 Companies


 Q2494. What does System.exit() do ?Core Java
Ans. Generally used to indicate termination

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   Like         Discuss         Correct / Improve          Asked in 1 Companies


 Q2495. What are different types of IOC containers ?Design
Ans. J2ee Web Containers and Core Containers

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   Like         Discuss         Correct / Improve          Asked in 1 Companies


 Q2496. How to sort objects based on one of the field ?Core Java
Ans. Using comparable and comparator and sorted collections like TreeSet or TreeMap.

or

use stream api from java 8 onwards which internally refers to comparable and comparator through lambda expressions

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   Like         Discuss         Correct / Improve     sort  sorting  comprator  comparable  treeset  treemap  sorting collections     Asked in 1 Companies      Basic        frequent


 Q2497. Given an Employee Table with Salary Column, Find 2nd and 5th highest salary in a particular department.SQL
Ans. Select salary from (select salary from employee where department = order by salary desc limit 5) emp order by salary limit 1 AND Select salary from (select salary from employee where department = order by salary desc limit 2) emp2 order by salary limit 1

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   Like         Discuss         Correct / Improve     sql  database   find 2nd highest salary sql database     Asked in 1 Companies


 Q2498. Difference between Component-Scan and @Component annotation ? Spring
Ans. @component mark a java class as a bean so that component scan mechanism of spring pick it up and register in IOC container.

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   Like         Discuss         Correct / Improve          Asked in 1 Companies


 Q2499. What are the different job permissions possible in Jenkins, and what are the reasons you would use each?Jenkins
 This question is still unanswered. Can you please provide an answer.


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 Q2500. How do you fetch a job's artifacts from a remote system? Jenkins
 This question is still unanswered. Can you please provide an answer.


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 Q2501. How do you back up your jenkins job & master configs?Jenkins
 This question is still unanswered. Can you please provide an answer.


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 Q2502. How do you connect a build node to the Jenkins master with out using a web browser or being in front of the physical machine?Jenkins
 This question is still unanswered. Can you please provide an answer.


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 Q2503. What are the supported user authentication methods and when would you use each one?Jenkins
 This question is still unanswered. Can you please provide an answer.


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 Q2504. What is the relation between Hudson and Jenkins?Jenkins
 This question is still unanswered. Can you please provide an answer.


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 Q2505. How can you move or copy Jenkins from one server to another?Jenkins
 This question is still unanswered. Can you please provide an answer.


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 Q2506. What are the most useful plugins in Jenkins?Jenkins
 This question is still unanswered. Can you please provide an answer.


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 Q2507. What are the two components Jenkins is mainly integrated with?Jenkins
 This question is still unanswered. Can you please provide an answer.


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 Q2508. Is it possible for the users to move the Jenkins from one server to another without changing its content?Jenkins
 This question is still unanswered. Can you please provide an answer.


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 Q2509. What are the conditions to deploy a custom build for a core plug-in?Jenkins
 This question is still unanswered. Can you please provide an answer.


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 Q2510. Which SCM tools does Jenkins support?Jenkins
 This question is still unanswered. Can you please provide an answer.


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