tuehellstern / jdbc-exercise-start

JDBC Exercise Start

JDBC-Exercise-Start

JDBC Exercise Start Exercise 1 In NetBeans: Execute the SQL script: create_mail_order_DB.sql. For a description of the mail order DB - see at the end of this doc. a) In NetBeans: Import the Java project “JDBC exercise start.zip”, or fetch it from GitHub: “https://github.com/tuehellstern/JDBC-Exercise-Start.git ” b) In the class DB.java: Insert your userid and password for your MySQL database. c) Run the program => The content of the parts table is shown. Exercise 2 Change, so the program selects and prints out only those tuples for which the price is below some limit (ex: 20). Let the user enter the limit-value. Exercise 3 Change, so only the attribute ”pname” is shown and only for products with a given product-number (pno). Exercise 4 Write a program that inserts a new part in the parts-table. The values to be inserted may be hardcoded in a first version. In a better version, let the user enter the values. Exercise 5 Change the program from the previous exercise, so it uses a PreparedStatement-object instead of a Statement-object. Let the user add several new tuples. (extra:) Read all the values for the new tubles from a text-file. Exercise 6 Make a Web-version of original program from exercise 1. Hint 1: Copy all content of main() to the processRequest(Request,Reply) method of the new servlet in a new web project. Remember to add the OJDBC lib to that project as well.

Hint 2: You need to delete the System part of the print lines command to get them out to the webpage.

Hint 3: You need to catch the SQLException after the closing statements

Hint 4: You need a

in start of your while loop, and a closing

at the end in order for it to look like this:

Exercise 7 Make a Web-version of the program from exercise 2 (select with a criterion). Hint 1: Let the user enter the criterion in a JSP page with a form with an input field and a submit button. Hint 2: You can make the servlet redirect to the same JSP page again, to reuse the inputfield and make the result from expression language ${}. Exercise 9 (exstra) Extend the web-application, so it enables the following “scenario”:

1. The user enters an order-number
2. The system shows the name of the employee responsible for that order. Exercise 8 (exstra) Extend the web-application, so it enables the following “scenario”:
3. The user enters an employee-number.
4. The system displays information about this employee.
5. The user makes changes to the information and confirms the changes (submit-button) Hint 1: make all the data be displayed in a form and with inputfields.
6. The system updates the employee-data in the database.