What are some of the benefits of prototyping?
What will be an ideal response?
Reduced time pressures for the development team Higher user satisfaction and higher user acceptance of the product
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A stockbroker wants an application that will display a client’s stock portfolio (Fig. 26.37). All the companies that the user holds stock in should be displayed in a JComboBox when the application is loaded. When the user selects a company from the JComboBox and clicks the Stock Information JButton, the stock information for that company should be displayed in output JTextFields. The provided stocks database contains one table, stockInformation (Fig. 26.38), which has four columns—stockName, stockSymbol, shares and price. The values stored in the stockName and stockSymbol col- umns are Strings. The values stored in the shares column are ints. The values stored in the price column are doubles.
a) Copying the template to your working directory. Copy the C:Examples Tutorial26ExercisesStockPortfolio directory to your C:SimplyJava directory.
b) Copying the database to your working directory. Copy the stocks database directory from C:ExamplesTutorial26ExercisesDatabases to your C:Simply- JavaStockPortfolio directory.
c) Opening the template file. Open the StockPortfolio.java file in your text editor. d) Declaring instance variables for database processing. In line 45, declare three
instance variables—myConnection, myStatement and myResultSet—of types Con-
nection, Statement and ResultSet, respectively.
e) Adding a database connection and creating a Statement object. In line 52 in the StockPortfolio constructor, insert statements that load the database driver, connect to the stocks database and create a Statement for submitting SQL to the database. Assume that the driver class name and JDBC URL are passed to the constructor
To add the title Appendix to the table of contents, select the word Appendix and click Add Text from the Table of Contents group on the References tab.
Answer the following statement true (T) or false (F)
Job ____________________ can greatly increase the chance that an employee's misuse of the system or abuse of information will be detected by another employee.
Fill in the blank(s) with the appropriate word(s).
Cellular phone service providers offer mobile broadband Internet access. _________________________
Answer the following statement true (T) or false (F)