Java-for-NvChad

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This is the TEMPORARY Github repo I am going to be putting out to troubleshoot the Problem I am having with my NvChad Java Setup with the help of tech savvy community!

• nvim folder is a direct copy of NeoVim, more specifically Nvchad configurations i have in my ~/.config/ directory.

• I documented my whole set up process in nvim.java-custom.md file i have.

• You can find links to my other notes related to NeoVim configuration, you're going to find this helpful: nvim.config-plugman

• You can find additional information and all the resources used to build this configurations in the nvim.java-custom.md file.

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The Problem

• Problem i am facing is:

1. Features I configured on nvim doesnt work including:

• Syntax highlighting
• Specific Keybindings
• Treesitter
• and possibly other features...

Java files look like raw text files when i open them just like in this case:

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Help!

I'd be so thankful if i am able to fix my set up with the help of you, since i dont have much programming knowledge in general!

Check out my [Reddit post](update the link)!

Feel free to request for the updates, and any assign any troubleshooting steps!

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Troubleshooting Update: Manual JDTLS Launch & Persistent JAR Access Error

As part of the ongoing effort to diagnose the Java LSP issue in Neovim (NvChad), a critical troubleshooting step involved attempting to launch the JDTLS language server directly from the terminal. This was done to rule out any integration problems specific to Neovim or its plugins.

Manual JDTLS Launch Attempt:

The following command (or a very similar variation) was executed directly in the terminal, targeting the JDTLS launcher JAR:

java \
-Declipse.application=org.eclipse.jdt.ls.core.id1 \
-Dosgi.bundles.defaultStartLevel=4 \
-Declipse.product=org.eclipse.jdt.ls.core.product \
-Dlog.protocol=true \
-Dlog.level=ALL \
-Xms1G -Xmx2G \
-javaagent:"~/.local/share/nvim/mason/packages/jdtls/lombok.jar" \
-jar "~/.local/share/nvim/mason/packages/jdtls/plugins/org.eclipse.equinox.launcher_1.7.0.v20250331-1702.jar" \
-configuration "~/.local/share/nvim/mason/packages/jdtls/config_linux" \
-data "/path/to/your/java/project" \
--add-modules=ALL-SYSTEM \
--add-opens java.base/java.util=ALL-UNNAMED \
--add-opens java.base/java.lang=ALL-UNNAMED

Resulting Error:

Despite all prior checks, this command consistently failed with the error:

Error: Unable to access jarfile org.eclipse.equinox.launcher_1.7.0.v20250331-1702.jar

Key Findings & What We've Ruled Out:

This specific error, "Unable to access jarfile," has led to extensive diagnostics:

• File Existence & Permissions: The org.eclipse.equinox.launcher_*.jar file exists at the specified path and has been confirmed to have correct read and execute permissions (even tested with chmod 777 on the directory).
• JAR Integrity: The JAR file is not corrupted, as confirmed by successful extraction using the unzip command.
• JVM Capability: The java executable itself is functional and capable of running other simple .jar files (e.g., a "Hello World" JAR) located in the exact same directory, ruling out a general JVM issue or a broader file system access problem.
• JDK Version: The issue persists across different JDK versions (tested with both OpenJDK 22 and Amazon Corretto 17 via sdkman).
• System Security: Neither SELinux (not active) nor AppArmor (active but no direct profile for java) appear to be directly blocking the java command's access to the JAR.

The Current Blockage:

The core problem remains why the Java Virtual Machine cannot "access" or more accurately, execute this specific org.eclipse.equinox.launcher_*.jar file, despite all filesystem, permission, and basic JAR integrity checks appearing to be valid. This suggests a very subtle issue, possibly related to internal JVM class loading, specific characteristics of the Equinox launcher JAR, or an environmental factor not yet identified.

Any insights from those familiar with deep JVM behavior or Eclipse Equinox would be invaluable.