### Question:
NetcdfFiles { public static NetcdfFile openInMemory(String filename) throws IOException { File file = new File(filename); ByteArrayOutputStream bos = new ByteArrayOutputStream((int) file.length()); try (InputStream in = new BufferedInputStream(new FileInputStream(filename))) { IO.copy(in, bos); } return openInMemory(filename, bos.toByteArray()); }  static void registerIOProvider(String className); static void registerIOProvider(Class<?> iospClass); static void registerRandomAccessFileProvider(String className); static void registerRandomAccessFileProvider(Class<?> rafClass); static NetcdfFile open(String location); static NetcdfFile open(String location, ucar.nc2.util.CancelTask cancelTask); static NetcdfFile open(String location, int buffer_size, ucar.nc2.util.CancelTask cancelTask); static NetcdfFile open(String location, int buffer_size, ucar.nc2.util.CancelTask cancelTask,
      Object iospMessage); static NetcdfFile open(String location, String iospClassName, int bufferSize, CancelTask cancelTask,
      Object iospMessage); static boolean canOpen(String location); static NetcdfFile openInMemory(String filename); static NetcdfFile openInMemory(URI uri); static NetcdfFile openInMemory(String name, byte[] data); static NetcdfFile openInMemory(String name, byte[] data, String iospClassName); static NetcdfFile open(ucar.unidata.io.RandomAccessFile raf, String location,
      @Nullable ucar.nc2.util.CancelTask cancelTask, @Nullable Object iospMessage); static NetcdfFile build(IOServiceProvider spi, ucar.unidata.io.RandomAccessFile raf, String location,
      ucar.nc2.util.CancelTask cancelTask); static String makeValidCdmObjectName(String shortName); static String makeValidCDLName(String vname); static String makeValidPathName(String vname); static String makeNameUnescaped(String vname); static String makeFullName(Group g); static String makeFullName(Variable v); static String makeFullNameSectionSpec(Variable v); static final String reservedFullName; }### Answer:
@Test public void testOpenInMemory() throws IOException { try (NetcdfFile ncfile = NetcdfFiles.openInMemory(TestDir.cdmLocalTestDataDir + "longOffset.nc")) { System.out.printf("%s%n", ncfile); } }