ABOUT

This is an example on how to use the official iota java library (iota.lib.java) together with Maven.

INSTALLATION

1. GET THE REQUIREMENTS (JRE & MAVEN)

Please make sure you have the JRE (Java Runtime Environment) and Maven installed. Here is how to do that:

UBUNTU

Depending on your permissions, you might have to write sudo in front of each line.

$ apt update
$ add-apt-repository ppa:webupd8team/java
$ apt-get update
$ apt-get install oracle-java8-installer
$ apt-get install -y maven 
$ apt-get install oracle-java8-set-default

To check whether the installations went successfully, execute these commands:

$ java -version
$ mvn --version

credits to this guide.

WINDOWS

Please install the JRE from oracle.com. You can check whether it works by executing java -version in your console. After that, proceed to install Maven:

1. download the latest version of Maven from maven.apache.org/download.cgi

2. unzip it into the folder where you want to install Maven (e.g. C:\Program Files\Apache\maven)

3. add both M2_HOME and MAVEN_HOME variables in the Windows system enviroment and point it to the maven folder (C:\Program Files\Apache\maven)

4. update the PATH variable, append Maven bin folder: %M2_HOME%\bin (now you can run maven commands everywhere)

5. to test whether it works, execute mvn --version in cmd, this should show you details about the installed version, directory etc.

2. INSTALL THE DEPENDENCIES

You need to install the official IOTA java library JOTA (iota.lib.java) locally. There are several ways to do that:

METHOD A: DOWNLOAD VIA WGET

$ cd ~/somewhere-over-the-rainbow/
$ wget https://github.com/iotaledger/iota.lib.java/archive/master.zip
$ unzip master.zip
$ cd iota.lib.java-master
$ mvn install

METHOD B: DOWNLOAD VIA GIT

For this you will need the GIT plugin (installation on UBUNTU via: sudo apt-get install git)

$ cd ~/somewhere-over-the-rainbow/
$ git clone https://github.com/iotaledger/iota.lib.java
$ cd iota.lib.java
$ mvn install

METHOD C: MANUAL DOWNLOAD

1. go to github.com/iotaledger/iota.lib.java

2. click on Clone or download and select Download ZIP

3. unzip the downloaded master.zip file

4. open you console (CMD on windows) and cd yourself into the directory iota.lib.java-master/ you just unzipped

5. execute mvn install to locally install the iota.lib.java repository

3. CREATE THE JAR FILE

Simply create the executable .jar directly from the GitHub source code. Again, there are several ways to do that:

METHOD A: DOWNLOAD VIA WGET

$ cd ~/my-favorite-directory/
$ wget https://github.com/mikrohash/jota-example/archive/master.zip
$ unzip master.zip
$ cd jota-example-master
$ mvn versions:use-latest-versions -DallowSnapshots=true -DexcludeReactor=false
$ mvn install

METHOD B: DOWNLOAD VIA GIT

For this you will need the GIT plugin (installation on UBUNTU via: sudo apt-get install git)

$ cd ~/my-favorite-directory/
$ git clone https://github.com/mikrohash/jota-example
$ cd jota-example
$ mvn versions:use-latest-versions -DallowSnapshots=true -DexcludeReactor=false
$ mvn install

METHOD C: MANUAL DOWNLOAD

1. go to github.com/mikrohash/jota-example

2. click on Clone or download and select Download ZIP

3. unzip the downloaded master.zip file

4. open you console (CMD on windows) and cd yourself into the directory jota-example-master/ you just unzipped

5. run mvn versions:use-latest-versions -DallowSnapshots=true -DexcludeReactor=false to update all dependencies to the newest versions

6. execute mvn install to locally install the iota.lib.java repository

4. RUN THE JAR FILE

Simply start the .jar with your JRE:

$ java -jar target/jota-example-[VERSION].jar