springboot Maven build produces encoding warnings

Building a project now appears to give the following warnings:

[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ demo ---
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[WARNING] Please take a look into the FAQ: https://maven.apache.org/general.html#encoding-warning
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ demo ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-resources-plugin:3.1.0:testResources (default-testResources) @ demo ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /Users/pwebb/projects/spring-boot/samples/demo/src/test/resources
[INFO] 

Comment From: philwebb

Looks like the properties section is to blame.

Old:

  <properties>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
    <resource.delimiter>@</resource.delimiter>
    <maven.compiler.source>${java.version}</maven.compiler.source>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.target>${java.version}</maven.compiler.target>
  </properties>

New:

  <properties>
    <java.version>1.8</java.version>
    <resource.delimiter>@</resource.delimiter>
    <maven.compiler.source>${java.version}</maven.compiler.source>
    <maven.compiler.target>${java.version}</maven.compiler.target>
  </properties>

Comment From: dreis2211

Isn't that a duplicate of #19815?

Comment From: philwebb

Ah yes, thanks. I'm a bit behind with issues and I just threw it in without checking.