title: java.sql.SQLException: ORA-01465: invalid hex number
body: <p>i am trying to save value in database but i am getting this error</p>
  
  <p>i tried this</p>
  
  <pre><code>private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
  
      try {
          // TODO add your handling code here:
          captureScreen("img.jpg");
      } catch (Exception ex) {
          Logger.getLogger(frontendUI.class.getName()).log(Level.SEVERE, null, ex);
      }
      try {
          Class.forName("oracle.jdbc.driver.OracleDriver");
          System.out.println("driver  loaded");
      }
      catch(ClassNotFoundException ex) {
          System.out.println("driver not loaded");
      }
  
      String URL = "jdbc:oracle:thin:@localhost:1521:xe";
      String Username = "system";
      String Password = "toushif";
      try { 
          con = DriverManager.getConnection(URL,Username,Password);
          st=(Statement) con.createStatement();
          String sql="insert into TOU3(file123) values('"+abc+"')";
          st.executeUpdate(sql);
      }                                        
      catch(Exception e) {
          e.printStackTrace();
      }
  
  /**
   * @param args the command line arguments
   */
  }
  </code></pre>