On the Android platform, the apps you write operate at a different level than core apps, like the phone, contact, or browser, for security reasons.
Answer the following statement true (T) or false (F)
False
On the Android platform, all apps operate on the same level. Even phone capabilities are just another app.
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In this exercise, you will enhance the applica- tion. The advanced Circle Painter application should draw blue circles with a randomly generated diameter when the user presses the left mouse button. When the user presses the right mouse button, the application should draw a red circle with a randomly generated diameter (Fig. 21.33).
a) Copying the template to your working directory. Copy the C:Examples Tutorial21ExercisesAdvancedCirclePainter directory to your C:Simply- Java directory.
b) Opening the template file. Open the DrawJPanel.java file in your text editor.
c) Adding a Color instance variable. In line 17, add instance variable circleColor of type Color to hold the color of the circle to be painted.
d) Determining which button was pressed. Find the drawJPanelMousePressed method, which starts at line 60. In line 68 (before the method call repaint), add an if…else statement that sets circleColor to Color.RED if right mouse button is pressed and sets circleColor to Color.BLUE if left mouse button is pressed.
e) Drawing the appropriate color. Find the paintComponent method, which immedi- ately follows drawJPanelMousePressed. Replace the parameter passed to the set- Color method (Color.BLUE) with circleColor since the color of the drawn circle will change depending on the mouse button t
If you modify the contents of any source in a list, if the list is a field, the list of sources automatically updates.
Answer the following statement true (T) or false (F)
Painting can be defined as copying pixels from one area to another.
Answer the following statement true (T) or false (F)
In a(n) ____, the number of comparisons made in each pass is one less than the number of elements remaining to be sorted because an element must be compared with the element next to it.
A. selection sort B. heap sort C. bubble sort D. insertion sort