Event Handling - Keyboard Events

 

Event Handling - Keyboard Events

// JavaFX controls 

// Keyboard Event handling

import javafx.application.*; 

import javafx.scene.*; 

import javafx.stage.*;

import javafx.event.*;

import javafx.scene.layout.*; 

import javafx.scene.control.*; 

import javafx.scene.input.*;

import javafx.geometry.*;

public class EventHandling_KB extends Application 

{

public static void main(String[] args)

{

// Start the JavaFX application by calling launch(). 

launch(args);

}

// Override the start() method. 

public void start(Stage myStage) 

{

StringBuffer str = new StringBuffer();

// Give the stage a title. 

myStage.setTitle("JavaFx - Keyboard Event handling");

// Use a FlowPane for the root node. 

FlowPane fp = new FlowPane(Orientation.VERTICAL,25,25);

// Center the controls in the scene. 

fp.setAlignment(Pos.CENTER);

// Creating a heading and response text

Label heading = new Label("Keyboard Event Handling.");

Label respText = new Label("");

// Add to the scene graph. 

fp.getChildren().addAll(heading, respText);

// Create a scene.

Scene myScene = new Scene(fp, 300, 100);

// Set the scene on the stage. 

myStage.setScene(myScene);

// Event Handling

myScene.setOnKeyTyped(new EventHandler<KeyEvent>(){

public void handle(KeyEvent ke) 

{

str.append(ke.getCharacter());

respText.setText(str.toString());

}

} ) ;

// Show the stage and its scene. 

myStage.show();

}

}

// Sample Output

>javac --module-path "C:\javafx-sdk-25\lib" --add-modules javafx.controls EventHandling_KB.java

>java --module-path "C:\javafx-sdk-25\lib" --add-modules javafx.controls EventHandling_KB