Interacting with Users in a JavaFX Application - Java JavaFX

Java examples for JavaFX:Action

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Description

Interacting with Users in a JavaFX Application

Demo Code

import javafx.application.Application;
import javafx.application.Platform;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class Main extends Application {
  public static void main(String[] args) {
    Application.launch(args);//from   ww w.  ja  va 2 s  .c o m
  }

  @Override
  public void start(Stage stage) {
    Label nameLbl = new Label("Enter your name:");
    TextField nameFld = new TextField();

    Label msg = new Label();
    msg.setStyle("-fx-text-fill: blue;");

    Button sayHelloBtn = new Button("Say Hello");
    Button exitBtn = new Button("Exit");

    sayHelloBtn.setOnAction(e -> {
      String name = nameFld.getText();
      if (name.trim().length() > 0) {
        msg.setText("Hello " + name);
      }
      else {
        msg.setText("Hello there");
      }
    });
    exitBtn.setOnAction(e -> Platform.exit());
    VBox root = new VBox();
    root.setSpacing(5);
    root.getChildren().addAll(nameLbl, nameFld, msg, sayHelloBtn, exitBtn);
    Scene scene = new Scene(root, 350, 150);
    stage.setScene(scene);
    stage.setTitle("Improved Hello JavaFX Application");
    stage.show();
  }
}

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