Seed4J

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Getting Started ​

Prerequisites ​

Java ​

You need Java 21.

Node.js and npm ​

Node.js is required to run the development web server and build the project.
Depending on your system, you can install Node.js from source or use a pre-built installer.

Verify your installation ​

Open your terminal and run the following commands to verify that Java and Node.js are correctly installed:

bash
java -version && javac -version
bash
node -v && npm -v

Example output:

➜ java -version && javac -version
openjdk version "21.0.8" 2025-07-15
OpenJDK Runtime Environment (build 21.0.8+9-Ubuntu-0ubuntu124.04.1)
OpenJDK 64-Bit Server VM (build 21.0.8+9-Ubuntu-0ubuntu124.04.1, mixed mode, sharing)
javac 21.0.8

➜ node -v && npm -v
v22.17.1
11.5.1

Quick Start ​

Clone the project and navigate into the directory:

bash
git clone https://github.com/seed4j/seed4j
cd seed4j

Start the application:

bash
./mvnw

On Windows

bash
mvnw.cmd

You should see logs like:

----------------------------------------------------------
  Application 'seed4j' is running!
  Local: 	    http://localhost:1339/
  External: 	http://127.0.1.1:1339/
----------------------------------------------------------

Now open http://localhost:1339 in your browser.