Question 8 options: When clicking the button, the program displays OK1. When clicking the button, the program displays OK2. When clicking the button, the program displays OK1 OK2. The program has a compile error, because the setOnAction method is invoked twice.
Analyze the following code:
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.stage.Stage;
public class Test extends Application {
@Override // Override the start method in the Application class
public void start(Stage primaryStage) {
// Create a button and place it in the scene
Button btOK = new Button("OK");
btOK.setOnAction(e -> System.out.println("OK 1"));
btOK.setOnAction(e -> System.out.println("OK 2"));
Scene scene = new Scene(btOK, 200, 250);
primaryStage.setTitle("MyJavaFX"); // 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);
}
}
Question 8 options:
|
|
When clicking the button, the program displays OK1. |
|
|
When clicking the button, the program displays OK2. |
|
|
When clicking the button, the program displays OK1 OK2. |
|
|
The program has a compile error, because the setOnAction method is invoked twice. |
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
