I am trying to pass my junit test but keep getting the error nullpointerexception

error: java.lang.NullPointerException at StoryTests.testSaveToDB(StoryTests.java:57)

I am not sure what the error is but do need my test to pass, if anyone has any idea please let me know.

public class StoryTests {

    public StoryTests() {
    }

    ITmagazineSystem testStory;

    /**
     *
     */
    @BeforeClass
    public static void setUpClass() {
        ITmagazineSystem testStory = new ITmagazineSystem();
    }

    @AfterClass
    public static void tearDownClass() {
    }

    @Before
    public void setUp() {
    }

    @After
    public void tearDown() {
    }

    @Test
    public void testSaveToDB() {
        String title = "";
        String StoryID = "s200";
        String StoryTitle = "ASE";
        String StoryType = "Computing";
        String StoryContent = "aaaa";
        testStory.saveToDB(StoryID, StoryTitle, StoryType, StoryContent);

        try {
            Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/magazine", "root", ""); // database connection

            Statement stmt = (Statement) con.createStatement();

            //String searchTitle = "Select StoryTitle from stories where StoryTitle = '" + txtstoryTitle.getText();
            String searchTitle = "Select StoryTitle from stories where StoryTitle = '" + StoryTitle + "'";

            ResultSet rs = stmt.executeQuery(searchTitle);
            while (rs.next()) {

                title = rs.getString("StoryTitle");
            }
        }
        catch (Exception e) {
        }
        assertTrue(title.equals(StoryTitle));
    }
}