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Merge pull request #5532 from corda/CORDA-3181-4.1-EdP
CORDA-3181 Correct JDK install instructions + streamlining
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Ed Prosser
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ed1216f622
@ -10,6 +10,9 @@ Building and installing a CorDapp
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.. contents::
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CorDapps run on the Corda platform and integrate with it and each other. This article explains how to build CorDapps.
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Applications on Corda (CorDapps) can be written in any language targeting the JVM. However, Corda itself and most of the samples are written in Kotlin. Kotlin is an `official Android language <https://developer.android.com/kotlin/index.html>`_, and you can read more about why Kotlin is a strong successor to Java `here <https://medium.com/@octskyward/why-kotlin-is-my-next-programming-language-c25c001e26e3>`_. If you're unfamiliar with Kotlin, there is an official `getting started guide <https://kotlinlang.org/docs/tutorials/>`_, and a series of `Kotlin Koans <https://kotlinlang.org/docs/tutorials/koans.html>`_
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To learn what a CorDapp is, please read :doc:`cordapp-overview`.
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CorDapp format
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@ -558,6 +561,3 @@ and subsequently retry the failed flow (currently this requires a node re-start)
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.. note:: this behaviour is to protect the node from executing contract code that was not vetted. It is a temporary precaution until the
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Deterministic JVM is integrated into Corda whereby execution takes place in a sandboxed environment which protects the node from malicious code.
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@ -1,187 +1,38 @@
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Getting set up for CorDapp development
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======================================
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Software requirements
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---------------------
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There are four pieces of required software for CorDapp development: the Java 8 JDK, IntelliJ IDEA, Git, and Gradle 4.10.
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Corda uses industry-standard tools:
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1. Install the Java 8 JDK, version |java_version|. We have tested using the following Java builds:
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* **Java 8 JVM** - we require at least version |java_version|, but do not currently support Java 9 or higher.
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- `Oracle JDK <https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html>`_
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- `Amazon Corretto <https://aws.amazon.com/corretto/>`_
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- `Red Hat's OpenJDK <https://developers.redhat.com/products/openjdk/overview/>`_
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- `Zulu's OpenJDK <https://www.azul.com/>`_
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We have tested with the following builds:
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Please note: OpenJDK builds often exclude JavaFX, which is required by the Corda GUI tools. Corda supports only Java 8.
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* `Oracle JDK <https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html>`_
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If you are using Windows: Add Java to the PATH environment variable by following the instructions in the `Oracle documentation <https://docs.oracle.com/javase/7/docs/webnotes/install/windows/jdk-installation-windows.html#path>`_.
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* `Amazon Corretto <https://aws.amazon.com/corretto/>`_
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2. Install `IntelliJ IDEA Community Edition <https://www.jetbrains.com/idea/>`_. Corda supports IntelliJ IDEA versions **2017.x**, **2018.x**, and **2019.x**; and Kotlin plugin version |kotlin_version|.
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* `Red Hat's OpenJDK <https://developers.redhat.com/products/openjdk/overview/>`_
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To install IntelliJ IDEA in a Ubuntu environment, navigate to the `Jetbrains IntelliJ snap package <https://snapcraft.io/intellij-idea-community>`_.
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* `Zulu's OpenJDK <https://www.azul.com/>`_
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3. Install `git <https://git-scm.com/>`_.
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Please note that OpenJDK builds usually exclude JavaFX, which our GUI tools require.
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* **IntelliJ IDEA** - supported versions **2017.x**, **2018.x** and **2019.x** (with Kotlin plugin version |kotlin_version|)
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* **Gradle** - we use 4.10 and the ``gradlew`` script in the project / samples directories will download it for you.
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Please note:
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* Applications on Corda (CorDapps) can be written in any language targeting the JVM. However, Corda itself and most of
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the samples are written in Kotlin. Kotlin is an
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`official Android language <https://developer.android.com/kotlin/index.html>`_, and you can read more about why
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Kotlin is a strong successor to Java
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`here <https://medium.com/@octskyward/why-kotlin-is-my-next-programming-language-c25c001e26e3>`_. If you're
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unfamiliar with Kotlin, there is an official
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`getting started guide <https://kotlinlang.org/docs/tutorials/>`_, and a series of
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`Kotlin Koans <https://kotlinlang.org/docs/tutorials/koans.html>`_
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* IntelliJ IDEA is recommended due to the strength of its Kotlin integration.
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Following these software recommendations will minimize the number of errors you encounter, and make it easier for
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others to provide support. However, if you do use other tools, we'd be interested to hear about any issues that arise.
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Set-up instructions
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-------------------
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The instructions below will allow you to set up your development environment for running Corda and writing CorDapps. If
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you have any issues, please reach out on `Stack Overflow <https://stackoverflow.com/questions/tagged/corda>`_ or via
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`our Slack channels <http://slack.corda.net/>`_.
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The set-up instructions are available for the following platforms:
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* :ref:`windows-label` (or `in video form <https://vimeo.com/217462250>`__)
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* :ref:`mac-label` (or `in video form <https://vimeo.com/217462230>`__)
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* :ref:`deb-ubuntu-label`
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* :ref:`fedora-label`
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.. _windows-label:
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.. note:: These setup instructions will guide you on how to install the Oracle JDK. Each JDK can be found on their respective sites:
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* `Oracle <http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html>`_
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* `Amazon Corretto <https://docs.aws.amazon.com/corretto/latest/corretto-8-ug/downloads-list.html>`_
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* `Red Hat OpenJDK <https://developers.redhat.com/products/openjdk/download/>`_
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* `Zulu OpenJDK <https://www.azul.com/downloads/zulu/>`_
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Windows
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-------
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.. warning:: If you are using a Mac, Debian/Ubuntu or Fedora machine, please follow the :ref:`mac-label`, :ref:`deb-ubuntu-label` or :ref:`fedora-label` instructions instead.
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Java
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^^^^
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1. Visit http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
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2. Click the download link for jdk-8uXXX-windows-x64.exe (where "XXX" is the latest minor version number)
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3. Download and run the executable to install Java (use the default settings)
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4. Add Java to the PATH environment variable by following the instructions in the `Oracle documentation <https://docs.oracle.com/javase/7/docs/webnotes/install/windows/jdk-installation-windows.html#path>`_
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5. Open a new command prompt and run ``java -version`` to test that Java is installed correctly
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Git
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^^^
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1. Visit https://git-scm.com/download/win
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2. Click the "64-bit Git for Windows Setup" download link.
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3. Download and run the executable to install Git (use the default settings)
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4. Open a new command prompt and type ``git --version`` to test that git is installed correctly
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IntelliJ
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^^^^^^^^
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1. Visit https://www.jetbrains.com/idea/download/download-thanks.html?code=IIC
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2. Download and run the executable to install IntelliJ Community Edition (use the default settings)
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3. Ensure the Kotlin plugin in Intellij is updated to version |kotlin_version| (new installs will contains this version)
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.. _mac-label:
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Mac
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---
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.. warning:: If you are using a Windows, Debian/Ubuntu or Fedora machine, please follow the :ref:`windows-label`, :ref:`deb-ubuntu-label` or :ref:`fedora-label` instructions instead.
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Java
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^^^^
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1. Visit http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
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2. Click the download link for jdk-8uXXX-macosx-x64.dmg (where "XXX" is the latest minor version number)
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3. Download and run the executable to install Java (use the default settings)
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4. Open a new terminal window and run ``java -version`` to test that Java is installed correctly
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IntelliJ
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^^^^^^^^
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1. Visit https://www.jetbrains.com/idea/download/download-thanks.html?platform=mac&code=IIC
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2. Download and run the executable to install IntelliJ Community Edition (use the default settings)
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3. Ensure the Kotlin plugin in Intellij is updated to version |kotlin_version| (new installs will contains this version)
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.. _deb-ubuntu-label:
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Debian/Ubuntu
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-------------
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.. warning:: If you are using a Mac, Windows or Fedora machine, please follow the :ref:`mac-label`, :ref:`windows-label` or :ref:`fedora-label` instructions instead.
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These instructions were tested on Ubuntu Desktop 18.04 LTS.
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Java
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^^^^
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1. Open a new terminal and add the Oracle PPA to your repositories by typing ``sudo add-apt-repository ppa:webupd8team/java``. Press ENTER when prompted.
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2. Update your packages list with the command ``sudo apt update``
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3. Install the Oracle JDK 8 by typing ``sudo apt install oracle-java8-installer``. Press Y when prompted and agree to the licence terms.
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4. Verify that the JDK was installed correctly by running ``java -version``
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Git
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^^^^
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1. From the terminal, Git can be installed using apt with the command ``sudo apt install git``
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2. Verify that git was installed correctly by typing ``git --version``
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IntelliJ
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^^^^^^^^
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Jetbrains offers a pre-built snap package that allows for easy, one-step installation of IntelliJ onto Ubuntu.
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1. To download the snap, navigate to https://snapcraft.io/intellij-idea-community
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2. Click ``Install``, then ``View in Desktop Store``. Choose ``Ubuntu Software`` in the Launch Application window.
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3. Ensure the Kotlin plugin in Intellij is updated to version |kotlin_version| (new installs will contains this version)
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.. _fedora-label:
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Fedora
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------
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.. warning:: If you are using a Mac, Windows or Debian/Ubuntu machine, please follow the :ref:`mac-label`, :ref:`windows-label` or :ref:`deb-ubuntu-label` instructions instead.
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These instructions were tested on Fedora 28.
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Java
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^^^^
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1. Download the RPM installation file of Oracle JDK from https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html.
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2. Install the package with ``rpm -ivh jdk-<version>-linux-<architecture>.rpm`` or use the default software manager.
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3. Choose java version by using the following command ``alternatives --config java``
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4. Verify that the JDK was installed correctly by running ``java -version``
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Git
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^^^^
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1. From the terminal, Git can be installed using dnf with the command ``sudo dnf install git``
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2. Verify that git was installed correctly by typing ``git --version``
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IntelliJ
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^^^^^^^^
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1. Visit https://www.jetbrains.com/idea/download/download-thanks.html?platform=linux&code=IIC
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2. Unpack the ``tar.gz`` file using the following command ``tar xfz ideaIC-<version>.tar.gz -C /opt``
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3. Run IntelliJ with ``/opt/ideaIC-<version>/bin/idea.sh``
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4. Ensure the Kotlin plugin in IntelliJ is updated to version |kotlin_version| (new installs will contains this version)
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4. Install `Gradle version 4.10 <https://gradle.org/install/>`_. If you are using a supported Corda sample, the included ``gradlew`` script should install Gradle automatically.
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Please note: Corda requires Gradle version 4.10, and does not support any other version of Gradle.
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Next steps
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----------
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First, run the :doc:`example CorDapp <tutorial-cordapp>`.
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Next, read through the :doc:`Corda Key Concepts <key-concepts>` to understand how Corda works.
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By then, you'll be ready to start writing your own CorDapps. Learn how to do this in the
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:doc:`Hello, World tutorial <hello-world-introduction>`. You may want to refer to the
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By then, you'll be ready to start writing your own CorDapps. You may want to refer to the
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:doc:`API documentation <corda-api>`, the :doc:`flow cookbook <flow-cookbook>` and the
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`samples <https://www.corda.net/samples/>`_ along the way.
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If you encounter any issues, please ask on `Stack Overflow <https://stackoverflow.com/questions/tagged/corda>`_ or via
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`our Slack channels <http://slack.corda.net/>`_.
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If you encounter any issues, please ask on `Stack Overflow <https://stackoverflow.com/questions/tagged/corda>`_ or via `our Slack channels <http://slack.corda.net/>`_.
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