From 1ded9abb46589808f2c1d1a568295d76f292b352 Mon Sep 17 00:00:00 2001
From: Ludy <Ludy87@users.noreply.github.com>
Date: Fri, 20 Feb 2026 12:12:27 +0100
Subject: [PATCH] build(tauri): enforce Java 17+ requirement in Windows jlink
 build script (#5684)

# Description of Changes

This pull request improves the `scripts/build-tauri-jlink.bat` build
script by adding a check to ensure that Java 17 or higher is installed
before proceeding. This helps prevent build errors due to incompatible
Java versions.

Build process enhancements:

* Added logic to parse the installed Java version and verify that it is
at least version 17; the script now exits with an error message if an
older version is detected.
* Updated status messages to clearly indicate the Java version being
used and to provide feedback if requirements are not met.

---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### Translations (if applicable)

- [ ] I ran
[`scripts/counter_translation.py`](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/docs/counter_translation.md)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 scripts/build-tauri-jlink.bat | 43 ++++++++++++++++++++++++++++++++++-
 1 file changed, 42 insertions(+), 1 deletion(-)

diff --git a/scripts/build-tauri-jlink.bat b/scripts/build-tauri-jlink.bat
index b9e438715..05d839016 100644
--- a/scripts/build-tauri-jlink.bat
+++ b/scripts/build-tauri-jlink.bat
@@ -17,7 +17,48 @@ if errorlevel 1 (
     exit /b 1
 )
 
-echo ✅ Java and jlink detected
+echo ▶ Checking Java version...
+set "JAVA_VERSION_STRING="
+for /f "tokens=3" %%g in ('java -version 2^>^&1 ^| findstr /i "version"') do (
+    set "JAVA_VERSION_STRING=%%g"
+)
+if not defined JAVA_VERSION_STRING (
+    echo ❌ Unable to capture Java version string from "java -version"
+    exit /b 1
+)
+set "JAVA_VERSION_STRING=%JAVA_VERSION_STRING:"=%"
+set "JAVA_MAJOR_VERSION="
+set "JAVA_MINOR_VERSION=0"
+set "JAVA_EFFECTIVE_MAJOR="
+for /f "tokens=1,2 delims=." %%a in ("%JAVA_VERSION_STRING%") do (
+    set "JAVA_MAJOR_VERSION=%%a"
+    set "JAVA_MINOR_VERSION=%%b"
+    if "%%a"=="1" (
+        set "JAVA_EFFECTIVE_MAJOR=%%b"
+    ) else (
+        set "JAVA_EFFECTIVE_MAJOR=%%a"
+    )
+)
+if not defined JAVA_MAJOR_VERSION (
+    echo ❌ Unable to determine Java major version from "%JAVA_VERSION_STRING%"
+    exit /b 1
+)
+if not defined JAVA_EFFECTIVE_MAJOR (
+    echo ❌ Unable to determine an effective Java major version from "%JAVA_VERSION_STRING%"
+    exit /b 1
+)
+for /f "tokens=1 delims=.-" %%c in ("%JAVA_EFFECTIVE_MAJOR%") do set "JAVA_EFFECTIVE_MAJOR=%%c"
+set /a "JAVA_EFFECTIVE_MAJOR_NUM=%JAVA_EFFECTIVE_MAJOR%" >nul 2>&1
+if errorlevel 1 (
+    echo ❌ Java major version "%JAVA_EFFECTIVE_MAJOR%" could not be parsed as an integer. Detected string: "%JAVA_VERSION_STRING%"
+    exit /b 1
+)
+set "JAVA_EFFECTIVE_MAJOR=%JAVA_EFFECTIVE_MAJOR_NUM%"
+if %JAVA_EFFECTIVE_MAJOR% LSS 17 (
+    echo ❌ Java 17 or higher is required. Found Java %JAVA_EFFECTIVE_MAJOR%
+    exit /b 1
+)
+echo ✅ Java %JAVA_EFFECTIVE_MAJOR% and jlink detected
 
 echo ▶ Building Stirling-PDF JAR...