prerequisites.adoc

Prerequisites

A Helidon {flavor-uc} Application	You can use your own application or use the Helidon {flavor-uc} Quickstart to create a sample application.
Java SE 21 (Open JDK 21)	Helidon requires Java 21+.
Maven 3.8+	Helidon requires Maven 3.8+.
Docker 18.09+	You need Docker if you want to build and deploy Docker containers.
Kubectl 1.16.5+	If you want to deploy to Kubernetes, you need kubectl and a Kubernetes cluster (you can install one on your desktop.

Verify Prerequisites

java -version
mvn --version
docker --version
kubectl version --short

Setting JAVA_HOME

# On Mac
export JAVA_HOME=`/usr/libexec/java_home -v 21`

# On Linux
# Use the appropriate path to your JDK
export JAVA_HOME=/usr/lib/jvm/jdk-21

prerequisites.adoc
Helm
To manage Kubernetes applications.

Verify Prerequisites

java -version
mvn --version
docker --version
kubectl version --short

Setting JAVA_HOME

# On Mac
export JAVA_HOME=`/usr/libexec/java_home -v 21`

# On Linux
# Use the appropriate path to your JDK
export JAVA_HOME=/usr/lib/jvm/jdk-21

prerequisites.adoc

curl

(Optional) for testing

Verify Prerequisites

java -version
mvn --version
docker --version
kubectl version --short

Setting JAVA_HOME

# On Mac
export JAVA_HOME=`/usr/libexec/java_home -v 21`

# On Linux
# Use the appropriate path to your JDK
export JAVA_HOME=/usr/lib/jvm/jdk-21

prerequisites.adoc

GraalVM CE 21.0.0

Verify Prerequisites

java -version
mvn --version
docker --version
kubectl version --short

Setting JAVA_HOME

# On Mac
export JAVA_HOME=`/usr/libexec/java_home -v 21`

# On Linux
# Use the appropriate path to your JDK
export JAVA_HOME=/usr/lib/jvm/jdk-21