Which of the following is true?
a. A precondition must be true when a method is invoked.
b. A postcondition must be true when a method successfully returns to its caller.
c. Both (a) and (b).
d. Neither (a) nor (b).
c. Both (a) and (b).
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The numbers inside the the brackets of a subscript operator are called index numbers.
Answer the following statement true (T) or false (F)
Which of the following statements is false?
a. A JavaFX GUI's scene graph is a tree structure of an app’s visual elements, such as GUI controls, shapes, images, video, text and more. b. Each visual element in the scene graph is a node—an instance of a subclass of Node (package javafx.scene), which defines common attributes and behaviors for all nodes in the scene graph. c. The first node in the scene graph is known as the origin. d. Nodes that have children are typically layout containers that arrange their child nodes in the scene.
Write a program called nf to display the number of files in your current directory. Type in the program and test it out
What will be an ideal response?
A break statement forces an immediate break, or exit, from switch and while statements only.
Answer the following statement true (T) or false (F)