Why might you want to access a Dialog Box Launcher?
A) to access more options and have more control over choices
B) to change how dialog boxes open and the choices they offer
C) to open more than one dialog box simultaneously
D) to add more tabs to the Ribbon
A
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Using a text editor, create a text file of several telephone numbers, using the two formats described previously. Write a program that reads this file, displays the data on the screen, and creates an array whose base type is TelephoneNumber. Allow the user to either add or delete one telephone number. Write the modified data on the text file, replacing its original contents. Then read and display the numbers in the modified file.
Write a class TelephoneNumber that will hold a telephone number. An object of this class will have the attributes • areaCode—a three-digit integer • exchangeCode—a three-digit integer • number—a four-digit integer and the methods • TelephoneNumber(aString)—a constructor that creates and returns a new instance of its class, given a string in the form xxx-xxx-xxxx or, if the area code is missing, xxx-xxxx. Throw an exception if the format is not valid. Hint: To simplify the constructor, you can replace each hyphen in the telephone number with a blank. To accept a telephone number containing hyphens, you could process the string one character at a time or learn how to use Scanner to read words separated by a character—such as a hyphen—other than whitespace. • toString—returns a string in either of the two formats shown previously for the constructor.
Write a script that tests as many of the math library functions in Fig. 18.1 as you can. Exercise each of these functions by having your program display tables of return values for a diversity of argument values in an HTML TEXTAREA.
What will be an ideal response?
Tab-delimited files use tabs to separate data into columns
Indicate whether the statement is true or false
The ________ function finds the largest value in a range
Fill in the blank(s) with correct word