?TheisNaN(value)function returns a Boolean value of true if the value is not numeric.
Answer the following statement true (T) or false (F)
True
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Method getSelectedIndex of class JComboBox returns:
a. the index of the selected item in the JComboBox. b. the selected item in the JComboBox, as a String. c. the index of the previously selected item. d. None of the above.
Which is not a characteristic of a menu interface?
A) It provides the user with an onscreen list of available selections. B) A user is limited to the options displayed. C) The user need not know what task should be accomplished, but does need to know the system. D) To be properly utilized, menu users must know which task they desire.
____ is a powerful DTP program that assists you in designing and producing professional-quality documents that combine text, graphics, illustrations, and photos.
A. Word B. Publisher C. PowerPoint D. All of the above
Suppose this is embedded in an otherwise correct and complete program. Which version of f() will be called?
Suppose class D is derived from class B, and class B has a public member function whose declaration is virtual void f();. Suppose class D has its version of the function, void f(). Here is a pointer definition and an access to a member function.. ``` B* bPtr = new D; BPtr->f(); ``` a) D::f() b) B::f() c) This is illegal. You can’t assign a D object to a variable of type pointer to B.