What must you do before you can use a variable in a Java application?

A. delcare it
B. check its data type
C. display it
D. store it in the manifest


Answer: A

Computer Science & Information Technology

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Which of the following errors is synchronous?

a. Divide by zero. b. Arithmetic overflow. c. Unsuccessful memory allocation. d. All of the above.

Computer Science & Information Technology

Which of the following statements is false?

a. The nodes arranged in a layout container are a combination of controls and possibly other layout containers. b. When the user interacts with a control, it generates an event. Programs can use event handling to specify what should happen when each user interaction occurs. c. An event handler is a method that responds to a user interaction. An FXML GUI’s event handlers are defined in a controller class. d. All of the above statements are true.

Computer Science & Information Technology

In all structured loops, the loop-controlling question provides the only entry to, or exit from, the repeating structure.

Answer the following statement true (T) or false (F)

Computer Science & Information Technology

Deleting the .plist file for an unresponsive Linux app can help solve the problem

Indicate whether the statement is true or false

Computer Science & Information Technology