Tag: maven-faq

maven November 21, 2018 by mkyong 4 comments

Maven – How to force re-download project dependencies?

In Maven, you can use Apache Maven Dependency Plugin, goal dependency:purge-local-repository to remove the project dependencies from the local repository, and re-download it again. Terminal $ mvn dependency:purge-local-repository [INFO] Scanning for projects… [INFO] [INFO] ————–< com.mkyong.examples:maven-code-coverage >————— [INFO] Building maven-code-coverage 1.0-SNAPSHOT [INFO] ——————————–[ jar ]——————————— [INFO] [INFO] — maven-dependency-plugin:2.8:purge-local-repository (default-cli) @ maven-code-coverage — Downloading from […]

maven December 3, 2009 by mkyong 30 comments

How to add remote repository in Maven

Not every library is stored in the Maven Central Repository, some libraries are only available in Java.net or JBoss repository (remote repository). 1. Java.net Repository pom.xml <repositories> <repository> <id>java-net-repo</id> <url>https://maven.java.net/content/repositories/public/</url> </repository> </repositories> 2. JBoss Repository pom.xml <repositories> <repository> <id>jboss-repo</id> <url>http://repository.jboss.org/nexus/content/groups/public/</url> </repository> </repositories> 3. Spring Repository pom.xml <repositories> <repository> <id>spring-repo</id> <url>https://repo.spring.io/release</url> </repository> </repositories> References Configuring Maven […]

maven November 26, 2009 by mkyong 14 comments

Maven dependency mechanism, how it works

Maven’s dependency mechanism help to download all the necessary dependency libraries automatically, and maintain the version upgrade as well. Case study Let see a case study to understand how it works. Assume you want to use Log4J as your project logging mechanism. Here is what you do… 1. In traditional way Visit http://logging.apache.org/log4j/ Download the […]

maven May 12, 2009 by mkyong 62 comments

How to include custom library into maven local repository?

For Java libraries that are not available in the Maven Central or other Maven repositories, we need to install it into our Maven Local repository in order to use it as a project dependencies. Note You may interest at this How to add Oracle JDBC driver in your Maven local repository In this tutorial, we […]

maven February 11, 2009 by mkyong 10 comments

How to download from Maven remote repository?

According to Apache Maven : Downloading in Maven is triggered by a project declaring a dependency that is not present in the local repository (or for a SNAPSHOT, when the remote repository contains one that is newer). By default, Maven will download from the central repository. In Maven, when you’re declared library does not exist […]

maven February 11, 2009 by mkyong 9 comments

Where is Maven Central Repository?

By default, Maven will get project dependencies from Maven Local Repository, if it is not found, Maven will get it from the Maven Central Repository Maven Central Repository URL – https://repo.maven.apache.org/maven2 Maven Central Repository Search – https://search.maven.org/ This is how the Maven central repository search website looks like : History This is how the Maven […]

maven January 23, 2009 by mkyong 30 comments

Where is Maven local repository?

By default, Maven local repository is defaulted to ${user.home}/.m2/repository folder : Unix/Mac OS X – ~/.m2/repository Windows – C:\Users\{your-username}\.m2\repository When we compile a Maven project, Maven will download all the project’s dependency and plugin jars into the Maven local repository, save time for next compilation. 1. Find Maven Local Repository 1.1 If the default .m2 […]