#vulnerable code 
                              @Test
  public void testAddAlgorithm() throws EntityStorageException {
    // Setup
    HibernateUtil.clear();

    AlgorithmServiceImpl finderService = new AlgorithmServiceImpl();

    // Execute functionality: add an IND algorithm
    Algorithm algorithm = new Algorithm("someFileName.jar");
    algorithm.setInd(true);
    finderService.addAlgorithm(algorithm);

    // Check result
    assertTrue(finderService.listAllAlgorithms().contains(algorithm));
    assertTrue(
        finderService.listAlgorithms(InclusionDependencyAlgorithm.class).contains(algorithm));
    assertFalse(finderService.listAlgorithms(FunctionalDependencyAlgorithm.class).contains(
        algorithm));

    // Cleanup
    HibernateUtil.clear();
  } 
                            #location 14 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                              @Test
  public void testAddAlgorithm() throws EntityStorageException, AlgorithmLoadingException {
    // Setup
    HibernateUtil.clear();

    AlgorithmServiceImpl finderService = new AlgorithmServiceImpl();

    // Execute functionality: add an IND algorithm
    Algorithm algorithm = new Algorithm("example_ind_algorithm.jar");
    finderService.addAlgorithm(algorithm);

    // Check result
    assertTrue(finderService.listAllAlgorithms().contains(algorithm));
    assertTrue(
        finderService.listAlgorithms(InclusionDependencyAlgorithm.class).contains(algorithm));
    assertFalse(finderService.listAlgorithms(FunctionalDependencyAlgorithm.class).contains(
        algorithm));

    // Cleanup
    HibernateUtil.clear();
  }