OpenJDK

calendar Apr 17, 2019 · 1 min read · azul openjdk correto  ·
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Overview

Oracle JDK requires licensing for use in commercial products. OpenJDK is free, We look at the various distributions of OpenJDK that are available.

Distributions

Oracle made JDK 17 free for all again, however if you hold existing Oracle Master Agreement ("OMA") there is still some confusion.

  1. Azul Platform Core https://www.azul.com/downloads/
  2. Amazon Corretto https://aws.amazon.com/corretto/
  3. Red Hat OpenJDK https://developers.redhat.com/products/openjdk/download
  4. Adoptium (AdoptOpenJDK) https://adoptium.net/

JNLP

In OpenJDK, javaws is missing, this is need to open old JNLP files if the project has it. You can download the IceTea binaries to get JNLP working in amazon correto.

Edit $icedTeaDirectory\bin\javaws.bat and replace set INST_JAVA_HOME= with set INST_JAVA_HOME=”$correttoDirectory” to use Corretto Java runtime

http://icedtea.wildebeest.org/download/icedtea-web-binaries/1.8/

Download and unzip the zip file. Add the $icedTeaDirectory\bin\ path to the path environment variable and invoke

1javaw.bat client.jnlp

Versions

To deal with different versions of java you can use jenv

1brew install jenv

Set the jdk version either globally or locally

1jenv versions
2jenv version
3jenv global 11.0
4jenv local 17.0

Tools

You can also download the various tools needed to work with java

  1. VisualVM - https://visualvm.github.io/
  2. Memory Analyzer - https://www.eclipse.org/mat/
  3. Mission Control - https://www.azul.com/products/components/azul-mission-control/
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