It is not normally necessary to build from source. Apache Jena provides already-built maven artifacts, available from the central maven repositories.
See https://jena.apache.org/download/
For most usage, there is no requirement to build from source. Use maven or other build system that can download from the central repositories.
<dependency>
<groupId>org.apache.jena</groupId>
<artifactId>apache-jena-libs</artifactId>
<type>pom</type>
<version>X.Y.Z</version>
</dependency>
The latest Apache Jena Fuseki can be obtained via https://jena.apache.org/download/.
There is also a package of libraries for offline installation.
Building Jena requires a Java8 JDK, Maven 3, and a network connection.
You can get the current development code by cloning:
git clone https://github.com/apache/jena/
or the Apache primary code repository for Jena:
git clone https://git-wip-us.apache.org/repos/asf/jena.git
For the signed source of the latest release, go to:
https://apache.org/dist/jena/source/
with previous versions available at:
https://archive.apache.org/dist/jena/source/
These are the formal files that define an Apache Jena release.
Apache Jena uses maven as its build system.
mvn clean install
A faster, but abbreviated, build of the main modules, including ARQ, TDB, command line tools and Fuseki2.
mvn clean install -Pdev
Once the whole of Jena has been built once, individual modules can be incrementally built using maven in their module directory.
The TDB tests on Microsoft Windows use a large amount of temporary disk space. This is because databases can not be completely deleted until the JVM exits on this operating system.