java - 重大：null java.sql.SQLException

Question

重複の可能性：
SQLiteデータベースへの接続が失敗する

私はJavaの初心者です

SQLiteからGUIインターフェイスに出力を取得したい場合JTable、次の例外が発生します。

重大：null java.sql.SQLException：java.sql.DriverManager.getConnection（DriverManager.java:604）のjdbc：sqlite：C：\ Users \ Amr \ Documents \ NetBeansProjects \ Project \BillsDataBase.sqliteに適切なドライバーが見つかりませんjava.sql.DriverManager.getConnection（DriverManager.java:243）at NewClass。（NewClass.java:22）at NewClass $ 5.run（NewClass.java:342）at java.awt.event.InvocationEvent.dispatch（InvocationEvent.java ：251）at java.awt.EventQueue.dispatchEventImpl（EventQueue.java:721）at java.awt.EventQueue.access $ 200（EventQueue.java:103）at java.awt.EventQueue $ 3.run（EventQueue.java:682） java.awt.EventQueue $ 3.run（EventQueue.java:680）at java.security.AccessController.doPrivileged（Native Method）at java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java:76）atjava.awt。EventQueue.dispatchEvent（EventQueue.java:691）at java.awt.EventDispatchThread.pumpOneEventForFilters（EventDispatchThread.java:242）at java.awt.EventDispatchThread.pumpEventsForFilter（EventDispatchThread.java:161）at java.awt.EventDispatchThread.pumpEventsForHierarchy（EventDispatchThread .java：150）at java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:146）at java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:138）at java.awt.EventDispatchThread.run（EventDispatchThread.java:91）150）at java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:146）at java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:138）at java.awt.EventDispatchThread.run（EventDispatchThread.java:91）150）at java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:146）at java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:138）at java.awt.EventDispatchThread.run（EventDispatchThread.java:91）

コード：

public class NewClass extends javax.swing.JFrame {
    Connection conn = null;
    ResultSet rs = null;
    PreparedStatement pst = null;

    public NewClass() {     
        initComponents(); 
        try {
            conn = DriverManager.getConnection("jdbc:sqlite:C:\\Users\\Amr\\Documents\\NetBeansProjects\\Project\\BillsDataBase.sqlite");
        } catch (SQLException ex) {
            Logger.getLogger(NewClass.class.getName()).log(Level.SEVERE, null, ex);
        }

    }

    private void Update_table(){
        try {
            String sql ="SELECT Amount, Type,Invoice FROM BillsDataBase";
            pst=conn.prepareStatement(sql);
            rs=pst.executeQuery();
            Table_Bills.setModel(DbUtils.resultSetToTableModel(rs));
        }
        catch(SQLException e){
            JOptionPane.showMessageDialog(null, e);
        }
    }

残りの部分には、と呼ばれるテーブルがありますTable_Bills

Answer 1

成功しましたか：

Class.forName("org.sqlite.JDBC");