Maven

Question 1

What is Maven in general?

Answer 1

Maven is a project management and comprehension tool. It provides a complete build life-cycle framework.

Maven allows developers to automate a project’s build infrastructure in almost no time at all.

Question 2

What is the POM in Maven?

Answer 2

POM stands for Project Object Model. It is the fundamental unit of work in Maven.

It will always be in the base directory in the maven project as pom.xml.

pom.xml contains dependencies, plugins, goals, and build profiles

Question 3

What are phases of the default lifecycle?

Answer 3

Phases are:

Validate, compile, test, package, integration, verify, install, deploy.

Question 4

What does the command mvn clean do?

Answer 4

Cleans maven project, removes target directory with all build data before starting build process.

Question 5

What is a dependency?

Answer 5

A dependency is an artifact that Maven includes as part of the build.

Same thing as including .jar files in your classpath in a normal eclipse build.

Question 6

1) What is a Maven repository?

2) What are the local and central repositories

Answer 6

1) It is a directory where all project jars, libraries, plugins, and other artifacts are stored so Maven can easily access them.
2) Local repository is everything saved to machine. If Maven doesn’t find dependency in Local, it will search the central repo using a URL.

Question 7

What is the default location of your local repository?

Answer 7

~/.m2/repository

This is changed in the conf/settings.xml file in Maven directory

Question 8

How to deploy a web app with Maven?

Answer 8

This is done by using weblogic or tomcat maven plugins. This info must be included in the pom.xml file.

Question 9

What is a Snapshot?

Answer 9

A snapshot is a special version that indicates a current development copy. Maven will check for new snapshots for every build.