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PONullPointerException at adding in MySQL
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  1. PONullPointerException at adding in MySQL
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    copied!<p>I'm trying to add a row in my database, at the table employee. But i get an exception: </p> <pre><code>Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at ConnectionBD.EmployeeBD.add(EmployeeBD.java:56)` </code></pre> <p>This is my source code (EmployeeBD Class):</p> <pre><code>public void add() throws SQLException, ClassNotFoundException { 56 Employee a = ep.ReadEmployee(); 57 if (a!=null) { 58 Connection conn = null; try { Class.forName(BDConnect.DRIVER); conn = DriverManager.getConnection(BDConnect.BD_URL, BDConnect.USUARI, BDConnect.PASSWORD); Statement stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE ); if (conn != null) { String sql = "SELECT * FROM employee"; ResultSet rs = stmt.executeQuery( sql ); rs.moveToInsertRow(); rs.updateString( "nif", a.getNif()); rs.updateString( "name", a.getName()); rs.updateDouble( "salary",a.getSalary()); System.out.println("Added Suscefully"); rs.insertRow(); rs.moveToCurrentRow(); } else { System.out.println("Can't get DB"); } } catch (SQLException ioe) { System.out.println(ioe); } catch(ClassNotFoundException ex) { System.out.println(ex); } } } </code></pre> <p>And the ReadEmployee() Method:</p> <pre><code>public Employee ReadEmployee() { String nif = null; String name = null; Double salary = null; int depId = 0; nif = jTextField1.getText(); name = jTextField2.getText(); salary = Double.parseDouble(jTextField3.getText()); Employee emp = new Employee(nif, name, salary, 1); if (name.equals("") || nif.equals("") || salary != null) { return emp; } else { JOptionPane.showMessageDialog(this, "Fill all TextFields", "Article warning", JOptionPane.WARNING_MESSAGE); return null; } } </code></pre> <p>Why It throws the exception? I don't know how to do it correcty!</p>
 

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