OpenJDK 12搭配EXE4j 6.0.2运行失败，已配环境变量仍报错

To cut to the chase: Yes, exe4j does have strict Java version compatibility limits, and exe4j 6.0.2 doesn’t support OpenJDK 12.0.2—that’s almost certainly why you’re seeing that error, even after setting up environment variables correctly.

Here’s the breakdown: #

1. exe4j 6.x’s supported Java versions
   exe4j 6.0.2 is part of the 6.x branch, which was built to work with Java 8 through Java 11. Java 12 came out after exe4j 6.0.2’s release, so it wasn’t included in the tool’s supported JVM list. Even with proper environment variables, exe4j can’t recognize a JDK version it wasn’t designed to work with.

2. Solutions to get things working

   • Upgrade exe4j: If you need to stick with Java 12, move to exe4j 7.0 or later. These versions added support for Java 12 and newer releases (like 13, 14, etc.).
   • Downgrade your JDK: If upgrading exe4j isn’t an option right now, switch to a Java version within exe4j 6.0.2’s support range—Java 11 or Java 8 are solid choices here.

3. Quick checks to rule out other issues
   Even though version mismatch is the main culprit, it’s worth double-checking these details to be thorough:

   • Make sure you’re using a 64-bit OpenJDK—the 64-bit version of exe4j 6.0.2 won’t detect 32-bit JVMs at all.
   • After setting environment variables, restart exe4j (or your whole system) to ensure the new settings take effect.
   • Verify your variables work: Open Command Prompt and run echo %EXE4J_JAVA_HOME% and java -version to confirm the path and version are correct.

内容的提问来源于stack exchange，提问作者cstack