QtumJ is bitcoinj ported to the Qtum blockchain protocol. The bitcoinj library is a Java implementation of the Bitcoin protocol, which allows it to maintain a wallet and send/receive transactions without needing a local copy of Bitcoin Core. It comes with full documentation and some example apps showing how to use it.
- Java 7+ and Gradle 4.4+ for the
coremodule - Java 8+ and Gradle 4.4+ for
toolsandexamples - Java 11+ and Gradle 4.10+ for the JavaFX-based
wallettemplate - Gradle - for building the project
- Google Protocol Buffers - for use with serialization and hardware communications
Currently this library is a basically usable version, it might have some minor issues. Use with caution!
Features ported:
- Wallet and address managing
- Qtum transactions creation
- Node syncing
- Block generating
- Blockchain managing (partially finished)
- Creating and calling contracts
To get started, it is best to have the latest JDK and Gradle installed. The HEAD of the master branch contains the latest development code and various production releases are provided on feature branches.
Official builds are currently using with JDK 8, even though the core module is compatible with JDK 7 and later.
To perform a full build (including JavaDocs and unit/integration tests) use JDK 8+
gradle clean build
If you are running JDK 11 or later and Gradle 4.10 or later, the build will automatically include the JavaFX-based wallettemplate module. The outputs are under the build directory.
To perform a full build without unit/integration tests use:
gradle clean assemble
Alternatively, just import the project using your IDE. IntelliJ has Gradle integration built-in and has a free Community Edition. Simply use File | New | Project from Existing Sources and locate the build.gradle in the root of the cloned project source tree.
These are found in the examples module.
Now you are ready to follow the tutorial from bitcoinj. QtumJ is quite similar to that.