How to convert from SPDX 2 to SPDX 3

[vargenau]

@goneall The Java tools version 2 have the capability to convert from SPDX 2 to SPDX 3. This is documented at: https://spdx.github.io/Spdx-Java-Library/org/spdx/library/conversion/Spdx2to3Converter.html

But I would like to do it in the command line, not in a Java program.

I used to do something like:

java -jar tools-java-1.1.8-jar-with-dependencies.jar Convert hello.spdx hello.spdx.json

convert from SPDX 2 tag:value to SPDX 2 JSON.

I would have expected that

java -jar tools-java-2.0.0-Alpha-jar-with-dependencies.jar Convert hello.spdx hello.spdx.json

would convert my SPDX 2 tag:value to SPDX 3, but that still converts to SPDX 2 JSON.

Is there a way to convert SPDX 2 to SPDX 3 on the command line?