### Question:
IRODSRandomAccessFile implements DataInput, DataOutput { public int read(final byte b[]) throws IOException { return readBytes(b, 0, b.length); } protected  IRODSRandomAccessFile(final IRODSFile irodsFile, final FileIOOperations fileIOOperations); void readBooleans(final boolean[] values, final int nValues); int read(final byte b[]); @Override char readChar(); @Override double readDouble(); @Override float readFloat(); @Override void readFully(final byte b[]); @Override void readFully(final byte b[], final int offset, final int len); @Override int readInt(); @Override String readLine(); @Override long readLong(); @Override short readShort(); @Override String readUTF(); @Override int readUnsignedByte(); @Override int readUnsignedShort(); @Override int skipBytes(final int n); @Override void write(final int b); @Override void write(final byte b[]); @Override void write(final byte b[], final int offset, final int len); @Override void writeBoolean(final boolean v); @Override void writeByte(final int v); @Override void writeBytes(final String s); @Override void writeChar(final int v); @Override void writeChars(final String s); @Override void writeDouble(final double v); @Override void writeFloat(final float v); @Override void writeInt(final int v); @Override void writeLong(final long v); @Override void writeShort(final int v); @Override void writeUTF(final String str); int read(); long getFilePointer(); void seek(final long position, final SeekWhenceType origin); int read(final byte b[], final int offset, final int len); long length(); @Override boolean readBoolean(); @Override byte readByte(); void close();  }### Answer:
@Test public final void testRead() throws Exception { String testFileName = "testRead.txt"; int fileLengthInKb = 2; long fileLengthInBytes = fileLengthInKb * 1024; String absPath = scratchFileUtils.createAndReturnAbsoluteScratchPath(IRODS_TEST_SUBDIR_PATH); String inputFileName = FileGenerator.generateFileOfFixedLengthGivenName(absPath, testFileName, fileLengthInBytes); String targetIrodsCollection = testingPropertiesHelper .buildIRODSCollectionAbsolutePathFromTestProperties(testingProperties, IRODS_TEST_SUBDIR_PATH); StringBuilder fileNameAndPath = new StringBuilder(); fileNameAndPath.append(absPath); fileNameAndPath.append(testFileName); IRODSAccount irodsAccount = testingPropertiesHelper.buildIRODSAccountFromTestProperties(testingProperties); IRODSAccessObjectFactory accessObjectFactory = irodsFileSystem.getIRODSAccessObjectFactory(); DataTransferOperations dto = accessObjectFactory.getDataTransferOperations(irodsAccount); dto.putOperation(fileNameAndPath.toString(), targetIrodsCollection, testingProperties.getProperty(TestingPropertiesHelper.IRODS_RESOURCE_KEY), null, null); BufferedInputStream fis = new BufferedInputStream(new FileInputStream(inputFileName)); byte[] inputBytes = new byte[1024]; fis.read(inputBytes); fis.close(); IRODSFileFactory irodsFileFactory = accessObjectFactory.getIRODSFileFactory(irodsAccount); IRODSRandomAccessFile randomAccessFile = irodsFileFactory .instanceIRODSRandomAccessFile(targetIrodsCollection + '/' + testFileName); char readData = (char) randomAccessFile.read(); char expectedReadData = (char) inputBytes[0]; Assert.assertEquals("byte I read does not match the first byte I wrote", expectedReadData, readData); }