编译FileBot时出现javac错误：release version 10不支持，寻求解决方案

Hey there! Let's break down what's going on and fix this error quickly.

Why This Error Happens #

Your JDK 9's javac compiler doesn't recognize the --release 10 flag. The --release argument (introduced in JDK 9) only supports release versions up to your installed JDK's version. Since you're on JDK 9, it can't handle targeting Java 10—hence the error. It looks like FileBot's default build configuration is set to compile for Java 10, which clashes with your JDK 9 setup.

Solutions to Try #

Option 1: Upgrade Your JDK to 10+ (Recommended)

This is the simplest fix, as it aligns your environment with FileBot's expected build requirements:

• Download and install JDK 10 or a newer LTS version (like JDK 11, which has longer-term support).
• Update your JAVA_HOME environment variable to point to the new JDK installation path. Alternatively, modify your build script's JAVA_HOME line:

  if not defined JAVA_HOME (set JAVA_HOME=C:\Program Files\Java\jdk-11.x.x)
  

• Re-run your build script—this should resolve the release version error immediately.

Option 2: Adjust FileBot's Build Configuration for JDK 9

If you prefer sticking with JDK 9, you'll need to tweak the build settings to target Java 9 instead:

1. Locate the build.xml file in your FileBot project directory (this is Apache Ant's core build file).
2. Search for the <javac> task(s) responsible for compiling the code. Look for attributes like release="10", source="10", or target="10".
3. Modify these values to 9 to match your JDK version. For example:

   <javac srcdir="${src.dir}" destdir="${build.dir}" release="9" encoding="UTF-8" />
   

   Or if release isn't used, set both source and target:

   <javac srcdir="${src.dir}" destdir="${build.dir}" source="9" target="9" encoding="UTF-8" />
   

4. Double-check your ivy.xml (Ivy dependency config) to ensure all dependencies are compatible with JDK 9—some libraries might require newer Java versions, so you may need to adjust dependency versions if you run into further errors.

A Quick Note #

Keep in mind that modifying the build target to Java 9 might disable some FileBot features that rely on Java 10+ APIs. If possible, upgrading your JDK is the safer bet to keep all functionality intact.

内容的提问来源于stack exchange，提问作者iamkroot