maven

Installing java and maven and building and testing maven:

First install Java:
sudo apt update



Step 1: Download the JDK Binaries
sudo apt install openjdk-17-jre-headless




Step 3: Verify the Java Installation
java -version





Now install setup Maven:
sudo apt install maven

# To check maven version
mvn --version

Create sample project and run Maven.
https://maven.apache.org/guides/getting-started/maven-in-five-minutes.html

mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeVersion=1.4 -DinteractiveMode=false

cd my-app
Tree

# Check maven version
mvn --version
Apache Maven 3.6.3
Maven home: /usr/share/maven
Java version: 13.0.1, vendor: Oracle Corporation, runtime: /opt/jdk-13.0.1
Default locale: en_IN, platform encoding: UTF-8
OS name: "linux", version: "5.19.0-42-generic", arch: "amd64", family: "unix


Build the Project
mvn package


You may test the newly compiled and packaged JAR with the following command:
java -cp target/my-app-1.0-SNAPSHOT.jar com.mycompany.app.App


Which will print the quintessential:
Hello World!