Programmers often say that a method's implementation details are hidden in a(n) ____.
A. black box
B. secret box
C. trap door
D. invisible box
Answer: A
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Explain the use of leases in a discovery service to cope with the problem of service volatility.
What will be an ideal response?
Supose the follwoing program displays a pane in the stage. What is the output if the user presses the DOWN arrow key?
``` import javafx.application.Application; import static javafx.application.Application.launch; import javafx.scene.Scene; import javafx.scene.layout.Pane; import javafx.stage.Stage; // import javafx classes omitted public class Test1 extends Application { @Override public void start(Stage primaryStage) { // Code to create and display pane omitted Pane pane = new Pane(); Scene scene = new Scene(pane, 200, 250); primaryStage.setTitle("MyJavaFX"); // Set the stage title primaryStage.setScene(scene); // Place the scene in the stage primaryStage.show(); // Display the stage pane.requestFocus(); pane.setOnKeyPressed(e -> System.out.print("Key pressed " + e.getCode() + " ")); pane.setOnKeyTyped(e -> System.out.println("Key typed " + e.getCode())); } /** * The main method is only needed for the IDE with limited * JavaFX support. Not needed for running from the command line. */ public static void main(String[] args) { launch(args); } }``` a. Key pressed DOWN Key typed UNDEFINED b. Key pressed DOWN Key typed c. Key typed UNDEFINED d. Key pressed DOWN
According to MLA style, the correct punctuation for a citation at the end of a sentence is:
A) .(Smith21) B) (Smith,21). C) (Smith21). D) .(Smith21).
An Excel feature that helps you choose a chart type by previewing suggested charts based on patterns in your data is called ________
A) Embedded Charts B) Recommended Charts C) Line Charts D) Organization Charts