If JCK tests run under EBCDIC simulator ~500 test groups with ~2000 test cases fail to initialize with the following exception:

FAILED: Unexpected java.lang.ExceptionInInitializerError
    Caused by java.lang.RuntimeException: default directory must be absolute
java.lang.ExceptionInInitializerError
        at java.nio.file.FileSystems.getDefault(FileSystems.java:176)
        at java.nio.file.Paths.get(Paths.java:84)
        at javasoft.sqe.tests.api.java.nio.file.Path.ObjectTests$2.runTest(ObjectTests.java:131)
...

All subsequent actions fail respectively with:

FAILED: Unexpected java.lang.NoClassDefFoundError: Could not initialize class java.nio.file.FileSystems$DefaultFileSystemHolder
java.lang.NoClassDefFoundError: Could not initialize class java.nio.file.FileSystems$DefaultFileSystemHolder
        at java.nio.file.FileSystems.getDefault(FileSystems.java:176)
        at java.nio.file.Paths.get(Paths.java:84)
        at javasoft.sqe.tests.api.java.nio.file.Path.ObjectTests$3.runTest(ObjectTests.java:192)
...