download jar
Warehouse address: https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-javadoc-plugin/3.0.0
The download method is as shown in the figure:
Generate jar file
Execute the following command in the cmd window (example):
mvn install:install-file -Dfile=F:\Downloads\XXXX.jar -DgroupId=YYYY -DartifactId=ZZZZ -Dversion=WWWW -Dpackaging=jar