Certain types of systems are called ________ because they must run without failure or with nearly instant recovery from failure.
A. mission-critical
B. MIS
C. uninterruptable
D. expert systems
Answer: A
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(Simple Calculator Application) In this exercise, you will add functionality to a simple calculator application. The calculator will allow a user to enter two numbers in the input JTextFields. There will be four JButtons, labeled +, -, / and *. When the user clicks the JButton labeled as + (addition), - (subtraction), * (multiplication) or / (division), the applica- tion will perform that operation on the numbers in the Enter first number: and Enter second number: input JTextFields and display the resultin the Result: output JTextField. Figure 5.34 displays the completed calculator.
a) Copying the template to your working directory. Copy the C:Examples Tutorial05ExercisesSimpleCalculator directory to your C:SimplyJava directory.
b) Opening the template file. Open the SimpleCalculator.java file in your text editor. c) Code the + JButton event handler. Scroll to the addJButtonActionPerformed
event handler (lines 215–218). After line 216 insert statements that obtain the user
input from firstNumberJTextField and secondNumberJTextField, convert those numbers to int values and assign the numbers to int variables number1 and number2, respectively. Next, insert a statement that adds the numbers and assigns the result to int variable result. Finally, insert a statement that displays the value of result in resultJTextField.
d) Code the - JButton event handler. Locate the subtractJButtonActionPerformed event handler (immediately following addJButtonActionPerformed). In the body of the event handler, insert statements that obtain the use
What is a nibble and how is it used in IPv6 addresses?
What will be an ideal response?
Match the following standard graphic file formats with their description
I. GIF II. JPG III. PNG IV. BMP V. TIF A. Best suited for web use only B. Developed for Microsoft Windows C. A lossless graphic format used in publishing D. A graphic format that can store up to 16.7 million colors E. A 256-color graphic file format that uses lossless compression
When you protect a worksheet, you may add an optional ________ to prevent someone from disabling the worksheet protection
A) lock B) scale C) legend D) password