What are the benefits of using full-duplex?
What will be an ideal response?
The benefits of using full-duplex are:
• Time is not wasted retransmitting frames because collisions do not occur.
• The full bandwidth is available in both directions because the send and receive functions are separate.
• Stations do not have to wait until other stations complete their transmissions because only one transmitter is used for each twisted pair.
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Class JTextArea’s getSelectedText method ________.
a. returns the text in the JTextArea b. returns the selected text in the JTextArea c. displays only the selected text in the JTextArea d. sets the selected text in the JTextArea
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
The data type float is a floating-point data type.
Answer the following statement true (T) or false (F)
If you ____________________, or decrease the number of pixels, information is deleted from the image.
Fill in the blank(s) with the appropriate word(s).