What are the two ways to create new layers?
What will be an ideal response?
You can click the Create new layer button on the Layers panel or you can click the Layers panel menu button, then click New Layer.
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Create an application that allows a user to reserve a car for the specified day (Fig. 25.52). The car reservation company can rent out only four cars per day. Let the application allow the user to specify a certain day. If four cars have already been reserved for that day, then indicate to the user that no vehicles are available. Reserva- tions are stored in reservations.txt.
a) Copying the template to your working directory. Copy the directory C:Examples Tutorial25ExercisesCarReservation to your C:SimplyJava directory.
b) Opening the template file. Open the CarReservation.java file in your text editor. c) Declaring a BufferedReader and a PrintWriter instance variable. At line 24,
declare two instance variables—a BufferedReader object named input, which will
be used to read from a file, and a PrintWriter object named output, which will be used to write to a file.
d) Opening a file to read from. In the reserveCarJButtonActionPerformed method (which immediately follows createUserInterface), create a new File object reserveFile for the file reservations.txt. Then, add a try block. Inside the try block, create a FileReader by passing the reserveFile to its constructor . Use this FileReader to initialize BufferedReader input.
e) Retrieving the selected date. For this application, you should store in reserva- tions.txt the date selected
What is MediaElement.js?
What will be an ideal response?
Ranges are defined by the ____.
A. first cell address in the upper-right corner of the block or group of cells and the last cell address in the lower-left corner of the range B. first cell address in the upper-right corner of the block or group of cells and the last cell address in the lower-right corner of the range C. first cell address in the upper-left corner of the block or group of cells and the last cell address in the lower-right corner of the range D. first cell address in the upper-left corner of the block or group of cells and the last cell address in the lower-left corner of the range
Conditional compilation cannot be used to
(a) perform loops. (b) ignore large blocks of code. (c) debug programs. (d) selectively define symbolic constants.