Configure Gradle in Visual Studio Code

To install version 21 of OpenJDK with Homebrew on macOS (from the console)

brew install openjdk@21

Generally, different versions of OpenJK with Homebrew are installed in the /usr/local/Cellar location.

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You need to modify the .zshrc and settings.json files in Visual Studio Code.

the

$JAVA_HOME

Enter the path to the Java installation you want (in my case, openjdk 21)

Then you must apply the changes to .zshrc with the command

source ~/.zshrc

There should be no other export path containing the location of openjdk

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command that lists the installed versions of openjdk:

/usr/libexec/java_home -V

to see the current version of OpenJDK you are using:

java -version

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in the settings.json file of Visual Studio Code

In this example I am using macOS

There are 2 settings.json files

• One is within the project itself (local configurations)
  • .vscode/settings.json
  • located at the root of the project
• settings.json for general configuration
  • located in /Users/xxxx/Library/Application Support/Code/User/settings.json

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The things to be modified are:

java.configuration.runtimes

"java.configuration.runtimes": [
{
"name": "JavaSE-21",
"path": "/usr/local/Cellar/openjdk@21/21.0.9/libexec/openjdk.jdk/Contents/Home",
"default": true
}
]

The “name” field is purely descriptive; you can write anything there.

The “path” field is important; it’s the path to OpenJDK where to search.

The field “default”: true, is used to make it the first version of openjdk to search for.

java.jdt.ls.java.home

    "java.jdt.ls.java.home": "/usr/local/Cellar/openjdk@21/21.0.9/libexec/openjdk.jdk/Contents/Home"

java.import.gradle.java.home

    "java.import.gradle.java.home": "/usr/local/Cellar/openjdk@21/21.0.9/libexec/openjdk.jdk/Contents/Home"

You need to clear the Visual Studio Code cache and restart it:

To do this, you must press Command + Shift + P and the “Command Palette” will open in Visual Studio Code

You should write “Java: Clean Java Languaje Server Workspace” there

A pop-up window will appear in Visual Studio Code at the bottom right asking if you want to restart the IDE; click OK (reload and delete)

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If everything goes wrong, you’ll see a message in Visual Studio Code; a message will appear in the bottom right corner indicating…

If everything goes well, you won’t see any errors and the syntax will be recognized.