TakamakaSimpleWallet

Takamaka Simple Wallet for tester

This guide explains the steps necessary to try the Takamaka simple wallet. The only requirement to be able to run the wallet is Java JDK 13. The wallet jar file includes all the dependencies necessary for execution.

Install JDK 13

Ubuntu / Debian / Kali linux

  1. Switch to superuser sudo su
  2. Look for the exact command for installing jdk 13. Minor versions are not important. query apt search jdk result openjdk-13-jre/kali-rolling,now 13.0.2+8-2 amd64
  3. Install the latest available version of java 13 apt install openjdk-13-jre
  4. Let's configure the default version of java for the system update-alternatives --config java Look for an option that looks like this. The path may vary slightly depending on the version of the operating system in use. 2 /usr/lib/jvm/java-13-openjdk-amd64/bin/java 1311 manual mode
  5. Select the option with the keywords jdk, 13, manual mode
  6. Check the correct installation with the java -version command. The output should look like this with any different minor version numbers. openjdk version "13.0.2" 2020-01-14 OpenJDK Runtime Environment (build 13.0.2+8-Debian-2) OpenJDK 64-Bit Server VM (build 13.0.2+8-Debian-2, mixed mode)

MacOSX Catalina

Installation

  1. Open Safari
  2. Go to https://www.oracle.com/java/technologies/javase-jdk13-downloads.html to download the latest version of Java JDK 13
  3. Choose the link that has the title macOS Installer and click on the file name jdk-13.##.###_osx-x64_bin.dmg (where instead of the # there are the numbers related to the current version)
  4. Accept the license by ticking the box and click on the green writing Download jdk-13.##.###_osx-x64_bin.dmg
  5. If required, allow the download from oracle.com
  6. At the end of the download, in the list of downloaded files at the bottom right of the screen, there will be a file called jdk-13.##.###_osx-x64_bin.dmg. Click on the file.
  7. At this point a window will appear with a single package called JDK 13.0.2.pkg. Double click to start the installation.
  8. In the next window click "continue" then "install".
  9. You will be asked for your user password to proceed with the installation.
  10. Once inserted, the installation should proceed by itself until the message "Install Succeeded"
  11. Click on "close" and then "move to Bin" to finish the procedure.

Verify the installation

  1. use the combination ⌘ + Space to open the application search.
  2. In the window that appears, type terminal and press enter.
  3. in the terminal type the command java -version the result should be a writing in which the line 13.##.### appears.

Windows 10

Installation

The Java Development Kit (JDK), officially named "Java Platform Standard Edition" or "Java SE", is needed for writing Java programs. The JDK is freely available from Sun Microsystems (now part of Oracle). The mother site for JDK (Java SE) is http://www.oracle.com/technetwork/java/javase/overview/index.html.

1. First Step Un-install older versions of JDK if any.

2. Second Step

  • Go to @ http://www.oracle.com/technetwork/java/javase/downloads/index.html.
  • Under "Java Platform, Standard Edition" ⇒ "Java SE 13.0.{x}", where {x} denotes a fast running security-update number ⇒ Click the "Oracle JDK Download" button.
  • Under "Java SE Development Kit 13.0.{x}" ⇒ Check "Accept License Agreement".
  • Choose the JDK for your operating system, i.e., "Windows". Download the "exe" installer (e.g., "jdk-13.0.{x}_windows-x64_bin.**exe**" - about 159MB).

3. Third Step - Start installing the JDK.

  • Run the installer (e.g., "jdk-13.0.{x}_windows-x64_bin.exe"), which installs both the JDK and JRE.
  • By default, JDK is installed in directory "C:\Program Files\Java\jdk-13.0.{x}", where {x} denotes the update number. Accept the defaults and follow the screen instructions to install JDK.
  • Use your "File Explorer", navigate to "C:\Program Files\Java" to inspect the sub-directories. Take note of your JDK installed directory jdk-13.0.{x}, in particular, the update number {x}, which you will need in the next step. I will refer to the JDK installed directory as <JAVA_HOME>, hereafter, in this article.

4. Fourth Step - Include JDK's "bin" Directory in the PATH

Windows' (CMD) is in charge for searching the current directory and the directories listed in the PATH environment variable (or system variable) for executable programs. JDK's programs (such as Java compiler "javac.exe" and Java runtime "java.exe") reside in the sub-directory "bin" of the JDK installed directory. You need to include JDK's "bin" in the PATH to run the JDK programs.

Some steps To edit the PATH environment variable in Windows 10:

  • Start, Control Panel -> System -> Click "Advance system settings"
  • Go to "Advanced" tab -> Click "Environment Variables" button.
  • Through "System Variables" Pane, select variable "Path"-> Click "Edit...".
  • For Windows 10
    You shall see a TABLE listing all the existing PATH entries (if not, goto next step). Click "New" -> Click "Browse" and navigate to your JDK's "bin" directory, i.e., "c:\Program Files\Java\jdk-13.0.{x}\**bin**", where {x} is your installation update number -> Select "Move Up" to move this entry all the way to the TOP.
  • For Older Windows 10 (ATTENTION: Press "Apply" or "OK" when you are sure. There is no UNDO process!!!) (Just in case, copy the content of the "Variable value" to Notepad before changing it!!!)
    In "Variable value" field, APPEND "c:\Program Files\Java\jdk-13.0.{x}\bin" (where {x} is your installation update number) IN FRONT of all the existing directories, followed by a semi-colon (;) to separate the JDK's bin directory from the rest of the existing directories. DO NOT DELETE any existing entries; otherwise, some existing applications may not run. Variable name : PATH Variable value : c:\Program Files\Java\jdk-13.0.{x}\bin;[do not delete exiting entries...]

Verify the installation

  1. Fifth Step - Verify the correct installation. Click "Start" button -> Windows System -> Command Prompt

  • Invoke "path" command to list the contents of the PATH environment variable. enter image description here Check to make sure that your JDK's "bin" is listed in the PATH. "path" "PATH=c:\Program Files\Java\jdk-13.0.{x}\bin;other entries..."

  • Issue the following commands to verify that JDK/JRE are properly installed and display their version:

    javac -version javac 13.0.1

java - version java version "13.0.1" 2019-10-15 Java(TM) SE Runtime Environment (build 13.0.1+9) Java HotSpot(TM) 64-Bit Server VM (build 13.0.1+9, mixed mode, sharing) Java -version comand

Get the wallet jar

The most recent version of the wallet is available at https://dev.takamaka.io/api/V2/app/walletjars/takamaka_wallet_LATEST.jar

Linux

  1. Go to the folder where you want to download the wallet
  2. Download the latest jar wget https://dev.takamaka.io/api/V2/app/walletjars/takamaka_wallet_LATEST.jar
  3. Run the jar with the command java -jar takamaka_wallet_LATEST.jar com.h2tcoin.takamakachain.utils.simpleWallet.SimpleWallet

MacOSX Catalina

  1. Go to the folder where you want to download the wallet
  2. Download the latest jar curl https://dev.takamaka.io/api/V2/app/walletjars/takamaka_wallet_LATEST.jar --output takamaka_wallet_LATEST.jar
  3. Run the jar with the command java -jar takamaka_wallet_LATEST.jar com.h2tcoin.takamakachain.utils.simpleWallet.SimpleWallet

Windows 10

  1. Download the wallet from the following link. https://dev.takamaka.io/api/V2/app/walletjars/takamaka_wallet_LATEST.jar

  2. Go to the folder where you downloaded the wallet.

  3. Run the downloaded JAR wallet with the following comand from Windows (CMD), opening the path where the jar wallet is situated. "java -jar takamaka_wallet_LATEST.jar com.h2tcoin.takamakachain.utils.simpleWallet.SimpleWallet"