Extract junit testcase, delete unneeded code
Delete generated test cases, move testData to boxWithStdlib
Generate codegen blackbox tests with stdlib
Move FullJdk tests to boxWithStdlib
Move JdkAnnotationsTest to boxWithStdlib
Kill blackBoxFile()

If your test is supposed to use blackBoxFile(), maybe it should be placed into
box/boxWithStdlib directory
Delete unneeded abstract test class, regenerate tests
Simplify tests on not-null assertions

No need to call blackBoxFile() on a useless test data file