the following directories contained classes from jdk/test/lib:
java/lang/Double
java/lang/Integer
java/lang/StackWalker
java/math/BigDecimal
java/nio/Buffer
jdk/modules/incubator
java/math/BigInteger
java/util/List
java/lang/Class/forName/modules
java/lang/Long
java/lang/Math
java/lang/ProcessHandle
java/lang/String/CompactString
java/lang/String
java/lang/StringBuffer
java/lang/StringBuilder
java/lang/Thread
java/util/concurrent/ThreadPoolExecutor
java/util/jar/JarFile/mrjar
java/util/logging
java/util/WeakHashMap
java/util/zip/InflaterInputStream
java/util/zip/ZipFile
java/math/BigInteger
java/util/Base64
java/util/regex
java/util/zip/ZipFile
jdk/internal/util/jar
java/lang/Math
java/lang/StackTraceElement
java/lang/StrictMath