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Frequently Asked Questions - Hyperledger Fabric Shim for Java chaincode

Q. How to build latest master code?

Install prerequisites

Make sure you installed all fabric prerequisites

Install java shim specific prerequisites:

  • Java 8
  • gradle 4.4

Note this is not the most recent version of gradle. An alternative is to use the gradlew script within the reposistory. Change each command below to be ./gradlew Installation of Java and gradle can be installed using sdkman.

Build shim

Clone the fabric shim for java chaincode repo.

git clone https://github.com/hyperledger/fabric-chaincode-java.git

Build java shim jars (proto and shim jars) and install them to local maven repository.

cd fabric-chaincode-java
gradle clean build install

Alternatively classes can be used instead of build to reduce the binaries that are built. This can be sufficient for using the local repository.

Build javaenv docker image, to have it locally.

gradle buildImage

Update your chaincode dependencies

Make your chanincode depend on java shim master version and not on version from maven central

dependencies {
    compile group: 'org.hyperledger.fabric-chaincode-java', name: 'fabric-chaincode-shim', version: '2.0.0-SNAPSHOT'
}