Files static method ________ receives a Path and returns a boolean indicating whether that Path represents a directory on disk.
a. isDiskDirectory
b. isDirectory
c. isFileDirectory
d. isPath
b. isDirectory
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The UML distinguishes an interface from other classes by placing the word “interface” in above the interface name.
a) italics b) carets c) guillemets d) bold
A multi-way if-else statement
(a) allows you to choose one course of action. (b) always executes the else statement. (c) allows you to choose among alternative courses of action. (d) executes all Boolean conditions that evaluate to true.
Which of the following is a true statement about middleware?
a) Middleware enables communication between computers in distributed systems. b) Middleware permits applications to run on heterogeneous computer platforms. c) Middleware simplifies application development, as developers do not need to know the implementation details of the middleware. d) all of the above
JavaScript has a function called ____ that returns a True value if a string cannot be converted to a number.
A. isNumeric(str) B. isNaN() C. numberToString(num) D. isLetter(str)