Paper/patches/server/0326-Improve-java-version-check.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <nassim@njahnke.dev>
Date: Wed, 16 Mar 2022 13:58:16 +0100
Subject: [PATCH] Improve java version check
Co-Authored-By: MiniDigger <admin@benndorf.dev>
diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java
index 623c7304a6849e994e22cd559177d9de0dd2f4c4..ee9bb75f2850bf421cc8ff02aca5b230538d6503 100644
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--- a/src/main/java/org/bukkit/craftbukkit/Main.java
+++ b/src/main/java/org/bukkit/craftbukkit/Main.java
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@@ -201,23 +201,27 @@ public class Main {
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return;
}
+ // Paper start - Improve java version check
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+ boolean skip = Boolean.getBoolean("Paper.IgnoreJavaVersion");
float javaVersion = Float.parseFloat(System.getProperty("java.class.version"));
- if (javaVersion < 61.0) {
- System.err.println("Unsupported Java detected (" + javaVersion + "). This version of Minecraft requires at least Java 17. Check your Java version with the command 'java -version'.");
- return;
- }
- if (javaVersion > 65.0) {
- System.err.println("Unsupported Java detected (" + javaVersion + "). Only up to Java 21 is supported.");
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+ boolean isOldVersion = javaVersion < 61.0;
+ if (!skip && isOldVersion) {
+ System.err.println("Unsupported Java detected (" + javaVersion + "). This version of Minecraft requires at least Java 17. Check your Java version with the command 'java -version'. For more info see https://docs.papermc.io/misc/java-install");
return;
}
String javaVersionName = System.getProperty("java.version");
// J2SE SDK/JRE Version String Naming Convention
boolean isPreRelease = javaVersionName.contains("-");
- if (isPreRelease && javaVersion == 61.0) {
- System.err.println("Unsupported Java detected (" + javaVersionName + "). You are running an outdated, pre-release version. Only general availability versions of Java are supported. Please update your Java version.");
+ if (!skip && isPreRelease) {
+ System.err.println("Unsupported Java detected (" + javaVersionName + "). You are running an unsupported, non official, version. Only general availability versions of Java are supported. Please update your Java version. See https://docs.papermc.io/paper/faq#unsupported-java-detected-what-do-i-do for more information.");
return;
}
+ if (skip && (isOldVersion || isPreRelease)) {
+ System.err.println("Unsupported Java detected ("+ javaVersionName + "), but the check was skipped. Proceed with caution! ");
+ }
+ // Paper end - Improve java version check
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+
try {
// Paper start - Handled by TerminalConsoleAppender
/*