Java on VSCode Extension Pack for Java can't detect jdk

Question

I am trying to run java on vscode however the 'Extension Pack for Java' keeps asking me to redownload the jdk. I am able to run java on intellij and have been using that but since I use vscode for everything else I would like to get it to work on my main editor.

Here are the settings related to java

 "java.help.firstView": "gettingStarted", "java.home":"/Library/Java/JavaVirtualMachines/amazon-corretto-17.jdk/Contents/Home/bin/java", "java.jdt.ls.java.home": "/Library/Java/JavaVirtualMachines/amazon-corretto-17.jdk/Contents/Home/bin/java", "java.configuration.runtimes": [ { "name": "JavaSE-17", "path": "/Library/Java/JavaVirtualMachines/microsoft-17.jdk/Contents/Home/bin/java", }, { "name": "JavaSE-17", "path": "/Library/Java/JavaVirtualMachines/temurin-17.jdk/Contents/Home/bin/java", }, { "name": "JavaSE-17", "path": "/Library/Java/JavaVirtualMachines/amazon-corretto-17.jdk/Contents/Home/bin/java", "default": true }, ],

enter image description here

Error The java.home variable defined in Visual Studio Code settings points to a missing or inaccessible folder (/Library/Java/JavaVirtualMachines/adoptopenjdk-17.jdk/Contents/Home)

any ideas?

All other languages I use work fine, it just seems to be java.

Answer 1

Assume you are using the latest Java extensions, here are some suggestions:

1. java.home has been deprecated, please don't use it and use java.jdt.ls.java.home instead
2. The latest Java extension already embeds a jre 17, you can find it in $home/.vscode/extensions/redhat.java-1.x.0/jre . Ideally there is no need to specify java.jdt.ls.java.home , unless your platform is not covered.
3. If your platform is not covered, then you need to manually set java.jdt.ls.java.home , which should point to the home path of your JDK installation. So please update it to /Library/Java/JavaVirtualMachines/amazon-corretto-17.jdk/Contents/Home .
4. java.configuration.runtimes is used to map different JDK versions to their installation path. Please make sure each version only appear once in this setting.

Answer 2

JVM cant be found if it is installed in a directory owned by root (like /usr/lib/jvm), install the VM in a directory in your own home folder, that worked for me.