Updating Data from a Java Class

Updating a row in a database table from a Java application requires you to do the following tasks:

  1. Create a method that finds a particular employee row. This is used to display the values for a particular employee on an edit page.
  2. Create a method that takes the updated employee data from the bean and updates the database.
  3. On the main application page, in every row of employee data, include a link that enables a user to edit the data for that employee. The links take the user to the edit.jsp file with the data for that employee displayed, ready for editing.
  4. Create a JSP page called edit.jsp, that includes a form and a table to display all the data of a single employee and enables a user to change the values.
  5. Create a JSP page that processes the form on the edit.jsp page, writes the updated values to the Employee.java bean and calls the updateEmployee method.

You will see how to do this in the following sections: