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Author Question: Analyze the following code.import javafx.application.Application;import javafx.scene.Scene;import ... (Read 110 times)

oliviahorn72

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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);
}
}

◦ When clicking the button, the program displays OK2.
◦ The program has a compile error, because the setOnAction method is invoked twice.
◦ When clicking the button, the program displays OK1 OK2.
◦ When clicking the button, the program displays OK1.


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Marked as best answer by oliviahorn72 on May 6, 2020

scikid

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oliviahorn72

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Reply 2 on: May 6, 2020
Wow, this really help


bblaney

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  • Posts: 323
Reply 3 on: Yesterday
:D TYSM

 

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