1 [JavaClass java.util.ArrayList]
   2 [JavaClass java.util.ArrayList]
   3 [JavaClass java.lang.String]
   4 java.lang.ClassNotFoundException: java.lang.String
   5 [JavaClass java.util.ArrayList]
   6 [JavaClass java.util.ArrayList]
   7 [JavaClass java.lang.String]
   8 [JavaPackage java.lang.String]
   9 [JavaClass jdk.nashorn.javaadapters.java_util_ArrayList]
  10 [JavaClass jdk.nashorn.javaadapters.java_util_ArrayList]
  11 [JavaClass jdk.nashorn.javaadapters.java_io_File]
  12 TypeError: Java.extend needs Java types as its arguments. in <eval> at line number 1
  13 java.lang.NullPointerException
  14 java.lang.ClassNotFoundException: java.lang.NullPointerException
  15 java.lang.NullPointerException: library can't be null
  16 java.lang.NullPointerException: library can't be null