Hedera Java SDK

The Java SDK for interacting with Hedera Hashgraph: the official distributed consensus platform built using the hashgraph consensus algorithm for fast, fair and secure transactions. Hedera enables and empowers developers to build an entirely new class of decentralized applications.

Hedera Hashgraph communicates using gRPC; the Protobufs definitions for the protocol are available in the hashgraph/hedera-protobuf repository.

Usage

Maven

<dependency>
  <groupId>com.hedera.hashgraph</groupId>
  <artifactId>sdk</artifactId>
  <version>1.3.0</version>
</dependency>

<!-- SELECT ONE: -->
<!-- netty transport (for server or desktop applications) -->
<dependency>
  <groupId>io.grpc</groupId>
  <artifactId>grpc-netty-shaded</artifactId>
  <version>1.24.0</version>
</dependency>
<!-- netty transport, unshaded (if you have a matching Netty dependency already) -->
<dependency>
  <groupId>io.grpc</groupId>
  <artifactId>grpc-netty</artifactId>
  <version>1.24.0</version>
</dependency>
<!-- okhttp transport (for lighter-weight applications or Android) -->
<dependency>
  <groupId>io.grpc</groupId>
  <artifactId>grpc-okhttp</artifactId>
  <version>1.24.0</version>
</dependency>

Gradle

implementation 'com.hedera.hashgraph:sdk:1.3.0'

// SELECT ONE:
// netty transport (for high throughput applications)
implementation 'io.grpc:grpc-netty-shaded:1.24.0'
// netty transport, unshaded (if you have a matching Netty dependency already)
implementation 'io.grpc:grpc-netty:1.24.0'
// okhttp transport (for lighter-weight applications or Android)
implementation 'io.grpc:grpc-okhttp:1.24.0'

Contributing to this Project

We welcome participation from all developers! For instructions on how to contribute to this repo, please review the Contributing Guide.

License Information