Manage

The manage step provides data management functionality for your application and/or process.

Below is the code for Manage():

//

   // Manage()

//

   // This function performs simple record functions of add, delete and gets

//

   private static void Manage ()

      System.out.println("MANAGE");

      // delete any existing records

      Delete_Records();

      // populate the table with data

      Add_Records();

      // display contents of table

      Display_Records();

//

   // Delete_Records()

//

   // This function deletes all the records in the table

//

   private static void Delete_Records ()

      System.out.println("\tDelete records...");

try

         stmt.executeUpdate("DELETE FROM custmast");

      catch (SQLException e)

         Handle_Exception(e);

//

   // Add_Records()

//

   // This function adds records to a table in the database from an

   // array of strings

//

   private static void Add_Records ()

      System.out.println("\tAdd records...");

      String data[] = {

         "('1000','92867','CA','1','Bryan Williams','2999 Regency','Orange')",

         "('1001','61434','CT','1','Michael Jordan','13 Main','Harford')",

         "('1002','73677','GA','1','Joshua Brown','4356 Cambridge','Atlanta')",

         "('1003','10034','MO','1','Keyon Dooling','19771 Park Avenue','Columbia')"

};

try

         // add one record at time to table

         for (int i = 0; i < data.length; i++) {

            stmt.executeUpdate("INSERT INTO custmast VALUES " + data[i]);

      catch (SQLException e)

         Handle_Exception(e);

//

   // Display_Records()

//

   // This function displays the contents of a table.

//

   private static void Display_Records ()

      System.out.print("\tDisplay records...");

try

         // execute a query statement

         ResultSet rs = stmt.executeQuery ("SELECT * FROM custmast");

         // fetch and display each individual record

         while (rs.next()) {

            System.out.println("\n\t\t" + rs.getString(1) + "   " + rs.getString(5));

         rs.close();

      catch (SQLException e)

         Handle_Exception(e);