Interview Questions and Answers for 'Maven' | Search Interview Question

Interview Questions and Answers - Order By Rating

Q31. What are different type of repositories in Maven ?

Maven

Ans. Local and Remote.

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Q32. How does Maven looks for a resource ?

Maven

Ans. It refers to the settings.xml to look for the repositories to look for the resource. First It looks into the configured local repository, then it looks into the configured Remote repositories. If the resource is still not found , it looks it within maven repository central i.e repo1.maven.org. If its still not found, it throws the exception saying "Unable to find resource in repository central".

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Q33. What is repository central ?

Maven

Ans. Its the repository provided by Maven. In case your POM specify the dependencies and its not available in the configured local and the remote repository. It then looks for the resource in Maven Central. Maven provides most of the generic dependency resources at this remote location.

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Q34. What would you do if you have to add a jar to the project using Maven ?

Maven

Ans. If its already there in Maven local repository, We can add that as a dependency in the project pom file with its Group Id, Artifact Id and version.

We can provide additional attribute SystemPath if its unable to locate the jar in the local repository.

If its not there in the local repository, we can install it first in the local repository and then can add it as dependency.

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Q35. Have you ever had problem getting your projects in eclipse refreshed after you made changes in the Pom files ?

Maven

Ans. Yes, It happens many times but I would usually perform mvn eclipse:eclipse and this would resolve the project refresh problems.

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Q36. What is the difference between compile and install ?

Maven

Ans. Compile compiles the source code of the project

whereas

Install installs the package into the local repository, for use as a dependency in other projects locally

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Q37. How to perform a clean install without executing Tests ?

Maven

Ans. mvn clean install -Dmaven.test.skip=true

or

mvn install -DskipTests

or

org.apache.maven.plugins
maven-surefire-plugin

true

within parent POM file.

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Q38. How can we see Dependencies for the project and where exactly they are defined ?

Maven

Ans. Using

mvn dependency:tree

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Q39. What is a transitive dependency ? Can we override Transitive Dependency version and If Yes, how ?

Maven

Ans. Transitive dependency is the dependencies not defined directly in the current POM but the POM of the dependent projects.

Yes we can override transitive dependency version by specifying the dependency in the current POM.

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Q40. What are the benefits of transitive depency in Maven ?

Maven

Ans. Transitive dependencies allows to avoid specifying the libraries that are required by the project which are specified in other dependent projects - Remote or Local.

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Usually asked to experienced developers.

Q41. What is a cyclic dependency ?

Maven

Ans. A has dependency of B, B has dependency of C and C has dependency of A

With Maven 2 , came transitive dependency wherein in above scenario, C will acts as a dependency of A as if this dependency has been defined directly in A but the negative side is that if it leads to cyclic dependency , it creates problems.

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Q42. What is the difference between Maven, Ant and Jenkins ?

Tool

Ans. Maven and Ant are Build Technologies whereas Jenkins is a continuous integration tool.

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Q43. What is Maven's order of inheritance?

a. parent pom -> project pom -> settings -> CLI parameters
b. project pom -> parent pom -> settings -> CLI parameters
c. settings -> parent pom -> project pom -> CLI parameters
d. CLI parameters -> settings -> parent pom -> project pom

Maven

Ans. parent pom -> project pom -> settings -> CLI parameters

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Q44. How do I determine which POM contains missing transitive dependency?

a. mvn -A
b. mvn -M
c. mvn -R
d. mvn -X

Maven

Ans. mvn -X

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Q45. What is the sequence in which Maven looks for the resources ?

a. Remote-> Maven Central - > Local
b. Local -> Remote - Maven Central
c. Remote-> Local -> Maven Central
d. Maven Central -> Local -> Remote

Maven

Ans. Local -> Remote - Maven Central

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Q46. POM stands for ...

a. Project Object Model
b. Project Oriented Model
c. Prospective Object Model
d. Prospective Objective Model

Maven

Ans. Project Object Model

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Q47. Which of the following is not type of Maven Repository ?

a. Local
b. Remote
c. Maven Central
d. Maven Local

Maven

Ans. Maven Local

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Q48. What is the default location of local repository ?

a. ~/.m2/repo
b. ~/m2./home/repository
c. ~/m2./repository
d. ~/m2./home/repo

Maven

Ans. ~/m2./repository

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Q49. Which of the following is not type of Maven Plugin ?

a. Build
b. Reporting
c. Remote
d. All are valid Maven Plugin types

Maven

Ans. Remote

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Q50. Which of the following is not a dependency scope in Maven ?

a. Compile
b. Test
c. System
d. Export

Maven

Ans. Export

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Q51. What is a project's fully qualified artifact name?

a. ::
b. :
c. ::
d. :

Maven

Ans. ::

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Q52. Which of the following is dependency exclusion ?

a. A doesn't depend on C and then A marks C as excluded.
b. A Depends on B and B depends on C and then A can mark B as excluded.
c. A and B depends on C and then they can mark C as excluded.
d. A depends upon B and B depends upon C then A marks C as excluded.

Maven

Ans. A depends upon B and B depends upon C then A marks C as excluded.

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