Summary

Add --source and --target as synonyms for the javac options -source and -target.

Problem

Although the java --source option is functionally distinct from the javac -source option, both may be used in conjunction with the recently-new --enable-preview option added for JEP 12. It is confusing to tell people that they can use:

$ javac --enable-preview -source N ...

but must use

$ java --enable-preview --source N ...

Solution

Add --source as a synonym for the javac option -source. SInce there is a triad of related options, -source, -target, and -release, it makes sense to add a synonym for -target as well.

For consistency, --source should be added as a synonym for the javadoc option -source. (javadoc does not have a -target option.)

Specification

The new options --source and --target are synonyms for -source and -target.

There are no other changes.