What command is used to enforce a precondition that the peek() method cannot work on an empty stack.
a. result = false;
b. if (top < MAX_STACK - 1)
c. return top < 0;
d. assert (!isEmpty());
d. assert (!isEmpty());
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To avoid duplicating code, use ________, rather than ________.
a. inheritance, the “copy-and-past” approach. b. the “copy-and-paste” approach, inheritance. c. a class that explicitly extends Object, a class that does not extend Object. d. a class that does not extend Object, a class that explicitly extends Object.
Analyze the following code:
``` import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.layout.Pane; import javafx.scene.layout.FlowPane; import javafx.stage.Stage; public class Test extends Application { @Override // Override the start method in the Application class public void start(Stage primaryStage) { Pane pane = new FlowPane(); Button bt1 = new Button("Java"); Button bt2 = new Button("Java"); Button bt3 = new Button("Java"); Button bt4 = new Button("Java"); pane.getChildren().addAll(bt1, bt2, bt3, bt4); Scene scene = new Scene(pane, 200, 250); primaryStage.setTitle("Test"); // Set the stage title primaryStage.setScene(scene); // Place the scene in the stage primaryStage.show(); // Display the stage } /** * 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. One button is displayed with the text "Java". b. Two buttons are displayed with the same text "Java". c. Three buttons are displayed with the same text "Java". d. Four buttons are displayed with the same text "Java".
Use ________ to apply preselected borders by brushing them on a border with the mouse
Fill in the blank(s) with correct word
The term validate means checking that the entered value ____ the data type of the variable that the value is assigned to within a cin statement.
A. is different from B. matches C. is similar to D. none of the above