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01:30
Manik P.
Use the declarations below for Questions. A program that tests these classes has the following declarations and assignments: How many of the above lines of code are incorrect? (A) 0 (B) 1 (C) 2 (D) 3 (E) 4
01:33
Khoobchandra A.
What is the wavelength of a photon that has three times as much energy as that of a photon whose wavelength is 820 nm?
01:52
Which statement about abstract classes and interfaces is false? (A) An interface cannot implement any non-default instance methods, whereas an abstract class can. (B) A class can implement many interfaces but can have only one superclass. (C) An unlimited number of unrelated classes can implement the same interface. (D) It is not possible to construct either an abstract class object or an interface object. (E) All of the methods in both an abstract class and an interface are public.
01:37
Consider the following declarations in a client class. Consider the following declarations in a client class. (A) I only (B) II only (C) III only (D) I and III only (E) I, II, and III
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