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107 lines
5.1 KiB
ReStructuredText
Getting set up
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==============
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Software requirements
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---------------------
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Corda uses industry-standard tools to make set-up as simple as possible. Following the software recommendations below will
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minimize the number of errors you encounter, and make it easier for others to provide support. However, if you do use other tools,
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we're interested to hear about any issues that arise.
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JVM
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~~~
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Corda is written in Kotlin and runs in a JVM. We develop against Oracle JDK 8, and other JVM implementations are not actively
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supported. Oracle JDK 8 can be obtained directly from
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`Oracle <http://www.oracle.com/technetwork/java/javase/downloads/index.html>`_. Installation instructions are
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available for `Windows <http://docs.oracle.com/javase/8/docs/technotes/guides/install/windows_jdk_install.html#CHDEBCCJ>`_,
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`Linux <http://docs.oracle.com/javase/8/docs/technotes/guides/install/linux_jdk.html#BJFGGEFG>`_ and
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`OS X <http://docs.oracle.com/javase/8/docs/technotes/guides/install/mac_jdk.html#CHDBADCG>`_.
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Please ensure that you keep your Oracle JDK installation updated to the latest version while working with Corda.
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Even earlier versions of JDK 8 versions can cause cryptic errors.
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If you do choose to use OpenJDK instead of Oracle's JDK, you will also need to install OpenJFX.
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Additional troubleshooting information can be found `here <https://docs.corda.net/getting-set-up-fault-finding.html#java-issues>`_.
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Kotlin
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~~~~~~
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Applications on Corda (CorDapps) can be written in any JVM-targeting language. However, Corda itself and most of the samples
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are written in Kotlin. If you're unfamiliar with Kotlin, there is an official `getting started guide <https://kotlinlang.org/docs/tutorials/>`_.
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See also our :doc:`further-notes-on-kotlin`.
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IDE
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~~~
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We strongly recommend the use of IntelliJ IDEA as an IDE, primarily due to the strength of its Kotlin integration. The free Community
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Edition can be downloaded from `JetBrains <https://www.jetbrains.com/idea/download/>`_.
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Please make sure that you're running the latest version of IDEA, as older versions have been known to have problems integrating with Gradle,
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the build tool used by Corda.
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You'll also want to install the Kotlin IDEA plugin by following the instructions
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`here <https://kotlinlang.org/docs/tutorials/getting-started.html>`_.
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Additional troubleshooting information can be found `here <https://docs.corda.net/getting-set-up-fault-finding.html#idea-issues>`_.
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Git
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~~~
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We use git to version-control Corda. Instructions on installing git can be found
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`here <https://git-scm.com/book/en/v2/Getting-Started-Installing-Git>`_.
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Following these instructions will give you access to git via the command line. It can also be useful to control git via IDEA. Instructions
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for doing so can be found on the `JetBrains website <https://www.jetbrains.com/help/idea/2016.2/using-git-integration.html>`_.
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Gradle
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~~~~~~
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We use Gradle as the build tool for Corda. However, you do not need to install Gradle itself, as a wrapper is provided.
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The wrapper can be run from the command line by using ``./gradlew [taskName]`` on OS X/Linux, or ``gradlew.bat [taskName]`` on Windows.
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Corda source code
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-----------------
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The Corda platform source code is available here:
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https://github.com/corda/corda.git
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A CorDapp template that you can use as the basis for your own CorDapps is available here:
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https://github.com/corda/cordapp-template.git
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And a simple example CorDapp for you to explore basic concepts is available here:
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https://github.com/corda/cordapp-tutorial.git
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You can clone these repos to your local machine by running the command ``git clone [repo URL]``.
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By default, these repos will be on the ``master`` branch. However, this is an unstable development branch. You should check
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out the latest milestone release (currently Milestone 7) instead by running ``git checkout release-M7``.
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Opening Corda/CorDapps in IDEA
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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When opening a Corda project for the first time from the IDEA splash screen, please click "Open" rather than "Import Project",
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and then import the Gradle project by clicking "Import Gradle project" in the popup bubble on the lower right-hand side of the screen.
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If you instead pick "Import Project" on the splash screen, a bug in IDEA will cause Corda's pre-packaged run configurations to be erased.
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If you see this warning too late, that's not a problem - just use ``git checkout .idea/runConfiguration`` or the version control tab in
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IDEA to undelete the files.
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IDEA's build of the project may need to be resynced from time to time. This can be done from within IDEA by going to "View" -> "Tool Windows" -> "Gradle"
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and clicking "Refresh all Gradle projects". Whenever prompted about Gradle, accept the defaults suggested by IDEA.
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Next steps
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----------
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The best way to check that everything is working fine is by :doc:`running-the-demos`.
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Once you have these demos running, you may be interested in writing your own CorDapps, in which case you should refer to
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:doc:`tutorial-cordapp`.
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If you encounter any issues, please see the :doc:`getting-set-up-fault-finding` page, or get in touch with us on the
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`forums <https://discourse.corda.net/>`_ or via `slack <http://slack.corda.net/>`_. |