Java 10 appears to interpret classpath as unrecognized protocol

[ajnelson-nist]

I have the SWID Autotools repository using Travis now. I tried a build (build record here, let me know if you need access permissions) that used macOS and Ubuntu to run swidval against a small tag, and the macOS side failed, seemingly because a classpath is accidentally being interpreted as a protocol.

Java versions (per Build system information from the Travis logs):

• Ubuntu: Java version: 1.8.0_151, vendor: Oracle Corporation
• macOS: Java version: 10.0.1, vendor: Oracle Corporation, runtime: /Library/Java/JavaVirtualMachines/jdk-10.0.1.jdk/Contents/Home

Relevant build log snippets:

• Ubuntu:

  [... stuff that worked ...]
  java -jar swidval-0.5.0.jar -usecase corpus /home/travis/build/usnistgov/private_swid_autotools/tests/sample_nop_corpus_tag/base.swidtag
  2018-12-10 22:07:30 INFO  Validating tag: /home/travis/build/usnistgov/private_swid_autotools/tests/sample_nop_corpus_tag/base.swidtag
  2018-12-10 22:07:30 INFO    tag type: corpus
  2018-12-10 22:07:30 INFO    authoritative tag: true
  2018-12-10 22:07:31 INFO  Loading requirements from: classpath:requirements.xml
  [... and then it goes on working ...]

• macOS:

  [... stuff that worked ...]
  java -jar swidval-0.5.0.jar -usecase corpus /Users/travis/build/usnistgov/private_swid_autotools/tests/sample_nop_corpus_tag/base.swidtag
  2018-12-10 22:10:13 INFO  Validating tag: /Users/travis/build/usnistgov/private_swid_autotools/tests/sample_nop_corpus_tag/base.swidtag
  2018-12-10 22:10:13 INFO    tag type: corpus
  2018-12-10 22:10:13 INFO    authoritative tag: true
  Exception in thread "main" java.lang.RuntimeException: java.net.MalformedURLException: unknown protocol: classpath
  at gov.nist.decima.swid.SWIDRequirementsManager.<init>(SWIDRequirementsManager.java:64)
  at gov.nist.decima.swid.SWIDRequirementsManager.getInstance(SWIDRequirementsManager.java:50)
  at gov.nist.decima.swid.SWIDAssessmentReactor.<init>(SWIDAssessmentReactor.java:55)
  at gov.nist.decima.swid.Application.run(Application.java:178)
  at gov.nist.decima.swid.Application.main(Application.java:82)
  Caused by: java.net.MalformedURLException: unknown protocol: classpath
  at java.base/java.net.URL.<init>(URL.java:634)
  at java.base/java.net.URL.<init>(URL.java:523)
  at java.base/java.net.URL.<init>(URL.java:470)
  at gov.nist.decima.swid.SWIDRequirementsManager.<init>(SWIDRequirementsManager.java:60)
  ... 4 more
  make[3]: *** [validation-result.xml] Error 1

Steps to reproduce:

• Install Oracle Java 10. (I'm guessing OS won't matter, but Java version will.)
• Clone this repository. (This issue confirmed on commit ddc261c.)
• Run make check-swidval.

[ajnelson-nist]

I encountered this issue again and forgot that I'd already posted a bug report.

I found openjdk8 and oraclejdk8 would succeed, but other JDKs (all major-version 10+) would fail.

Here is the last build log that shows these fail states: https://travis-ci.com/usnistgov/private_swid_autotools/builds/109374519

The four lines following "DEBUG:check-swidval.mk" show the output of java -version, and classpath protocol problem is dumped immediately after those lines.

I think it would help this repository to use a CI framework to catch issues like this. Ideally, the following as a .travis.yml file would pass:

language: java

os:
  - linux
  - osx

dist:
  - trusty
  - xenial

osximage:
  - xcode9.3
  - xcode10.2

jdk:
  # Currently builds:
  - openjdk8
  - oraclejdk8
  # Should also build, but currently fails:
  - openjdk10
  - openjdk11
  - oraclejdk11

script:
  - #(the commands to run the build)

(That clean syntax is currently wishful. I keep finding that the matrix needs to be manually unrolled, like in the above build's config, to get all the combinations.)

[ajnelson-nist]

As a reminder of the relevance of this issue, which I ran into again recently: The Ubuntu package default-jre installs Java 11 by default.

[ajnelson-nist]

Thanks!