To select the current paragraph, you can point on any word within paragraph and _____.
A. double-click
B. triple-click
C. hold the Shift key and single-click
D. right-click
Answer: B
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Write a program that will read a line of text that ends with a period, which serves as a sentinel value. Display all the letters that occur in the text, one per line and in alphabetical order, along with the number of times each letter occurs in the text. Use an array of base type int of length 26, so that the element at index 0 contains the number of a’s, the element at index 1 contains the number of b’s, and so forth. Allow both uppercase and lowercase letters as input, but treat uppercase and lowercase versions of the same letter as being equal. Hints: Use one of the methods toUpperCase or toLowerCase in the wrapper class Character, described in Chapter 6. You will find it helpful to define a method that takes a character as an argument and returns an int value that is the correct index
This project is a bit challenging to get the loop conditions right. The objective is to keep the array index within bounds and count only letters. Another little problem is how to get the printable character code from the array index after the letter counts have been determined. The "trick" is to know that adding 65 decimal to the array index will produce the ASCII code for the character.
Write an application that mimics the behavior of a screen saver. It should draw random shapes onto a black background and the shapes should build up on top of each other until the screen saver resets (every 30 seconds). You have been provided with a Screen Saver application that does not yet display outlined shapes. It uses the MyRectangle and MyOval classes that you created in this tutorial. Add the code that will display random outlined shapes in your output. Your output should look like Fig. 27.34.
a) Copying the template to your working directory. Copy the C:Examples Tutorial27ExercisesAdvancedScreenSaver directory to your C:SimplyJava directory.
b) Opening the template file. Open the MyRectangle.java file in your text editor.
c) Adding an instance variable to the MyRectangle class. At line 7, add a comment indicating that the instance variable is a boolean and will indicate whether or not the rectangle is filled. At line 8, add a private instance variable named filled of type boolean.
d) Modifying the MyRectangle constructor. You will now modify the MyRectangle constructor so that it can accept an additional boolean argument. At line 12, add a boolean argument named fill to the end of the parameter list. At line 16, set the instance variable filled equal to the value of parameter fill and on the same line, add a comment indicating that filled will specify if the shape will be filled.
e) Modifying the draw method. At line 31, add a comment indicating that an if statem
Which term is all about gathering information?
A. Due diligence B. Due care C. Negligence D. Liability
Which protocol is used for communication between Squid and its clients?
A. HTTP B. FTP C. GOPHER D. IP