Power Query is a BI tool used for writing queries to almost any kind of data source, from text files to websites to large database structures. ?
Answer the following statement true (T) or false (F)
True
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Suppose the following program displays a pane in the stage. What is the output if the user presses the key for letter B?
``` 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 B Key typed UNDEFINED b. Key pressed B Key typed c. Key typed UNDEFINED d. Key pressed B
A(n) ____ is the computer program that converts plaintext into an enciphered form.?
A. ?worm B. ?Trojan horse C. ?firewall D. ?encryption algorithm
The expression str1 < str 2 is true when
A) the string object str1 precedes the string str 2 in alphabetic order. B) the string str1 converted to numeric form is less than the string str2 converted to numeric form. C) the length of the string str1 is less than the length of the string str2. D) the C-string "str1" precedes the C-string "str2" in alphabetic order. E) None of the above
In Java it is possible to write a method that will return __________.
a. a whole number b. a reference to an object c. a string of characters d. Any of these