Montonio Java SDK

A type-safe Java client for the Montonio payment gateway REST API (V2 + Stargate). Covers payment order lifecycle, payment method discovery, and JWT webhook/return validation.

Requirements

• Java 17+
• Gradle 9.4.1 (included via wrapper)

Getting Started

Using a Devcontainer (recommended)

The project includes a devcontainer configuration with Java 17, Gradle via the wrapper (./gradlew), and GitHub CLI. Open the project in any devcontainer-compatible tool:

• VS Code — install the Dev Containers extension, then Reopen in Container
• IntelliJ IDEA — open the project and follow the Dev Containers integration guide
• GitHub Codespaces — click Code > Codespaces > New codespace on the repository page
• CLI — using the Dev Container CLI:

  devcontainer up --workspace-folder .
  devcontainer exec --workspace-folder . bash

Local Setup

Install Java 17 via SDKMAN:

sdk env install

Build & Test

./gradlew build                # full build
./gradlew test                 # all tests
./gradlew unitTest             # unit tests only
./gradlew integrationTest      # integration tests only
./gradlew testAndReport        # all tests + JaCoCo coverage reports

License

MIT