Modernize Java launch code

[erichaagdev]

❄️ Winter Update PR Navigator ❄️

1. Include realized build time savings in experiment summary #261
2. Include performance characteristics and support -x for Gradle experiment 1  #262
3. Always read project name from Build Scan data #263
4. Gradle init script improvements #264
5. Adopt Foojay Toolchains and Kotlin DSL plugins in build logic #265
6. Add variable to query debug mode #266
7. ⛄ Modernize Java launch code #267
8. Display serialization factor in summary of all experiments #272
9. Display potential build time savings in experiment summaries #274
10. Update the contract of command line tools #283

⛄ = you are here

Summary

This PR updates the Java launch code used to invoke the command line tools.

Closes #176

Testing

In order to test this, I ran Gradle experiments 1-3 both online and offline:

./01-validate-incremental-building.sh -r git@github.com:gradle/ge-solutions.git -p sample-projects/gradle/7.x/ge -t 'build'
./01-validate-incremental-building.sh -r git@github.com:gradle/ge-solutions.git -p sample-projects/gradle/7.x/ge -t 'build' -x
./02-validate-local-build-caching-same-location.sh -r git@github.com:gradle/ge-solutions.git -p sample-projects/gradle/7.x/ge -t 'build'
./02-validate-local-build-caching-same-location.sh -r git@github.com:gradle/ge-solutions.git -p sample-projects/gradle/7.x/ge -t 'build' -x
./03-validate-local-build-caching-different-locations.sh -r git@github.com:gradle/ge-solutions.git -p sample-projects/gradle/7.x/ge -t 'build'
./03-validate-local-build-caching-different-locations.sh -r git@github.com:gradle/ge-solutions.git -p sample-projects/gradle/7.x/ge -t 'build' -x

[jthurne]

The optional comments I left might be worth considering if we're okay with deviating from the application plugin's template script. If we want this to closely match the template script, then its fine to leave them unaddressed.

[erichaagdev]

The optional comments I left might be worth considering if we're okay with deviating from the application plugin's template script. If we want this to closely match the template script, then its fine to leave them unaddressed.

These are great suggestions! I intentionally left the code as close to its source (the template script) as I could. I'm fine implementing these changes but I'm unsure of the impact, if any. @etiennestuder wdyt?