zrlw opened a new issue, #990:
URL: https://github.com/apache/maven-compiler-plugin/issues/990
### Affected version
3.14.0
### Bug description
There are ```import sun.misc.Unsafe;``` in our codes, we want the target
class bytecode version is java 8 for the sake of compatibility.
During runing ```mvn compile``` with jdk17+,
1. we will encounter ```Cannot compile: java: package sun.misc does not
exist``` ERROR and the compilation process will be terminated with failure if
we set ```maven.compiler.release``` to 8 or configure release of
```maven-compiler-plugin``` to 8 at the pom.xml like this,
```
<profile>
<id>jdk9-compile</id>
<activation>
<jdk>[1.9,)</jdk>
</activation>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<release>8</release>
</configuration>
</plugin>
</plugins>
</build>
</profile>
```
2. ```Unsafe is internal proprietary API and may be removed in a future
release``` Warning will appear and the compilation process will continue if we
set ```maven.compiler.target``` to 1.8
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