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AlikElzin-kilaka
Asked: 2016-04-11 03:16:05 +0800 CST

How to install JDK sources?

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How can I download the source code of Java on my local machine, so I can reference it in an IDE?

jdk

3 Answers

  1. Best Answer

    Example for Java 8: 

    sudo apt-get install openjdk-8-source

    apt-get puts it under the relevant JDK location as src.zip: /usr/lib/jvm/java-8-openjdk-amd64/src.zip

    Intellij IDEA recognized it automatically and started showing me the source code.

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  2. In case of java 11 (on Ubuntu 18.04) I did:

    First I install jdk 11:

    sudo apt install openjdk-11-jdk

    I install the sources like this:

    sudo apt-get install openjdk-11-source

    And I found them in /usr/lib/jvm/openjdk-11/lib/src.zip

    I use Eclipse so I go inside Eclipse's menu Window -> Preferences -> Installed JREs and inside select java-11-openjdk-amd64 -> edit -> select the jar (jrt-fs.jar) -> Source Attachment -> External location -> /usr/lib/jvm/openjdk-11/lib/src.zip

    Now I happily read the java documentation! :)

    Best of luck to all!

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  3. In case of java 13 simply run sudo apt-get install openjdk-13-source

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