IntelliJ 2021.2.2编译Java项目报错invalid source release: 18求助

Executing pre-compile tasks...
Loading Ant configuration...
Running Ant tasks...
Running 'before' tasks
Checking sources
Parsing java... [Adexo]
java: error: invalid source release: 18
Checking dependencies... [Adexo]
Dependency analysis found 0 affected files
Errors occurred while compiling module 'Adexo'
javac 11 was used to compile java sources
Finished, saving caches...
Module 'Adexo' was fully rebuilt due to project configuration/dependencies changes
Compilation failed: errors: 1; warnings: 0
Executing post-compile tasks...
Loading Ant configuration...
Running Ant tasks...
Synchronizing output directories...

30.9.2021 22:34 - Build completed with 1 error and 0 warnings in 3 sec, 279 ms

该报错由IntelliJ IDEA更新后自动修改了项目JDK相关配置，和实际使用的JDK 16.0.1版本不匹配导致，按以下步骤逐一核对修改即可：

• 核对项目级别JDK配置
  打开File > Project Structure > Project页面，确认两个配置项：
  1. SDK 选项选择本地安装的JDK 16.0.1，排除IDEA自动切换为内置JDK或其他版本的可能
  2. Language level 选项选择对应JDK 16的等级，不要选17、18等更高版本
• 核对模块级别JDK配置
  在Project Structure页面切换到Modules标签，选中Adexo模块：
  1. Sources标签下的Language level和项目级配置保持一致，为JDK 16对应等级
  2. Dependencies标签下的模块SDK也选择JDK 16.0.1
• 核对Java编译器配置
  打开File > Settings > Build, Execution, Deployment > Compiler > Java Compiler：
  1. Project bytecode version 选择16，不要使用默认的18或其他版本
  2. 下方Per-module bytecode version列表如果存在Adexo模块的配置，将其Target bytecode version也改为16
  3. 取消勾选Use '--release' option for cross-compilation (Java 9 and later)选项，避免IDEA自动追加错误的版本参数
• 清理缓存重启重建
  点击顶部菜单File > Invalidate Caches...，勾选Clear file system cache and local history后点击Invalidate and Restart，重启后重新构建项目即可正常编译。

内容的提问来源于stack exchange，提问作者ADEX