The LicenseSpring Java SDK lets you implement license activation, entitlement enforcement, and usage tracking directly inside your Java application with no external licensing infrastructure to build or maintain.
Built for the full range of JVM-based environments, the SDK supports desktop, server, enterprise, and distributed Java deployments from a single integration.
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Trusted by Software Vendors WorldwideThe Java SDK integrates as a library directly into your Java application. Once installed, you have full access to LicenseSpring's licensing infrastructure.
With the SDK, you can:
Activate and validate licenses at runtime: online, offline, or in air-gapped environments
Enforce node-locked, floating, subscription, and consumption-based licensing: using the model that fits your product
Gate features by entitlement: control access to functionality at the SDK level, across any JVM-based application type
Run local license checks with configurable grace periods: define how long the SDK honors a cached license before requiring revalidation, so connectivity loss never interrupts active users
Bind licenses to hardware: generate persistent hardware IDs using multiple device fingerprinting algorithms suited to the deployment environment
Track usage and activations: feed license telemetry back to the LicenseSpring platform in real time
The Java SDK is designed for vendors building commercial software on the JVM.
| Use Case | Description |
|---|---|
Enterprise Software | Licensing Java-based enterprise applications and internal tools |
Desktop Applications | Licensing Java desktop software built with Swing or JavaFX |
Server Applications | Licensing backend or middleware services |
Developer Tools | Protecting proprietary developer platforms or SDKs |
Distributed Systems | Enforcing licensing across clustered or distributed Java deployments |
The Java SDK is organized into discrete modules, allowing you to include only the components your application architecture requires. Before integrating, review the Java Modules documentation to select the right module for your environment.
Modules cover:
Application license enforcement
Feature entitlement validation
Concurrent and floating license environments
Integration with LicenseSpring's licensing management services
The Java SDK supports applications running on Java 8 Update 161 (8u161) and later, ensuring compatibility with the broad range of modern JVM environments while maintaining security and runtime stability.
For applications requiring shared license access across multiple users or systems, the Java SDK integrates with LicenseSpring's floating licensing infrastructure.
Floating licenses allow:
Multiple users to draw from a shared license pool
Concurrent license enforcement across distributed systems
Dynamic license allocation based on active usage
For server-side licensing management tasks, such as creating orders, generating license keys, or automating entitlement provisioning, LicenseSpring provides a dedicated Management API.
The Management API enables you to:
Create and manage licenses programmatically
Generate license keys for new customers
Create orders and license entitlements
Integrate licensing operations into existing business workflows
The Java SDK includes hardware fingerprinting support for node-locked licensing and device-bound activation. Multiple algorithms are available for computing a unique, persistent hardware identifier, selecting the approach appropriate for the deployment environment, whether a physical workstation, a virtual machine, or a server instance.
Generated hardware IDs are used for:
Node-locked license binding
Device identification and activation tracking
Consistent hardware fingerprinting across multi-SDK product deployments
Products that pair a Java component with other parts of their stack, whether that be a C++ core engine, a .NET front-end, or a Node.js management interface, can use multiple LicenseSpring SDKs simultaneously.
All LicenseSpring SDKs share a common license file format and compute hardware identifiers using the same underlying logic. A license issued to a device is recognized consistently across every component of your product, regardless of which SDK each part uses.
The Java SDK fully supports deployments with limited or no internet connectivity with two distinct activation paths:
Offline activation: uses a file-exchange flow for environments with occasional or restricted connectivity
Air-gapped activation: uses a code-exchange flow for environments where no external data transfer is permitted
From SDK version 2.2.0 onward, developers have access to hosted Javadoc documentation, release artifacts, and downloadable SDK packages, providing full API reference and integration guidance alongside each release.
Stay current on new features, platform support additions, security updates, and bug fixes via the LicenseSpring Platform Changelog.
Our developer support team can help you implement licensing quickly and correctly.
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