Background

At LMAX we are all Java developers. We are not Javascript developers. We are not Rust developers. To support our needs as a business we needed to read and write from and to the Solana blockchain within our Java ecosystem. There lacked a mature enough Java library at the time our project started. We therefore challenged ourselves to write our own. This repository is the product of that challenge.

Libraries

solana4j (https://central.sonatype.com/artifact/com.lmax/solana4j/overview)

A pure Java library that encapsulates both the Legacy and V0 encoding schemes, with support for many of the core Solana programs.

solana4j-json-rpc

A Java client library to communicate with the Solana blockchain, with support for many of the endpoints documented at https://solana.com/docs/rpc. This library requires the following dependencies:

• com.fasterxml.jackson.core:jackson-databind:2.17.2
• com.fasterxml.jackson.core:jackson-annotations:2.17.2
• com.fasterxml.jackson.core:jackson-core:2.17.2

Local Development Requirements

• jdk11 installation
• docker (for testcontainers)

If running on an M[1,2,3,4] Mac please read shared/src/test-support/resources/README.md.

Contributions

• Fork the repository.
• Create a branch, for example: "amazing-new-feature-branch".
• Make your amazing changes.
• Push your amazing changes to your "amazing-new-feature-branch" branch.
• Raise a PR.
• Wait patiently.
• Receive praise.

The integration tests written act as living documentation. If you're making any changes, such as extending the programs or endpoints supported, please can you continue extending this documentation!

Thanks.
MJ.