A method is declared async to indicate to the compiler that the method will ________.
a) wait for a callback
b) perform a synchronous activity
c) create multiple threads
d) await an asynchronous task
d) await an asynchronous task
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What will be displayed after the following program segment is coded and run, assuming the user enters the number 49 at the prompt?
``` Write “Enter a number.”. Write “This program will display its square root.”. Input Number Write “The square root of “+Number+“ is “+Sqrt(Number)+“.”.``` a. The square root of 7 is 49. b. The square root of Number is 7. c. The square root of 49 is 7. d. An error message
private fields of a superclass can be accessed in a subclass
a. by calling private methods declared in the superclass. b. by calling public or protected methods declared in the superclass. c. directly. d. All of the above.
Answer the following statements true (T) or false (F)
1) An interface cannot declare any instance variables. 2) Establishing the relationship between a listener and the component it listens to is accomplished using polymorphism. 3) A reference variable can refer to an object of a child class, but not any further down the inheritance hierarchy. 4) Polymorphism via inheritance requires that all classes in the inheritance hierarchy are concrete. 5) An interface name may be used as a reference type.
=INDEX(A2:B5,MATCH(MAX(B2:B5 ),B2:B5,0 ),1 ) is an example of a nested function
Indicate whether the statement is true or false