hello/java/samples/fx/JavaFxPaneExample/src/javafxpaneexample/TextAreaExample.java

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package javafxpaneexample;

import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.input.KeyCode;
import javafx.scene.layout.*;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;

/**
 *
 * @author denis
 */
public class TextAreaExample extends Stage{
    public void init(){
        TextField field = new TextField();
        TextArea area = new TextArea();
        Button append = new Button("Append");
        Button clear = new Button("Clear");
        append.setOnAction(e -> {
            area.appendText(field.getText() + "\n");
            field.clear();
        });
        field.setOnKeyPressed(e -> {
            if(e.getCode().equals(KeyCode.ENTER)){
                area.appendText(field.getText() + "\n");
                field.clear();
            }
        });
        clear.setOnAction(e -> {
            area.clear();
            field.clear();
        });
        GridPane root = new GridPane();
        
        root.add(field, 0, 0, 100, 1);
        root.add(area, 0, 2, 100, 10);
        HBox hBox = new HBox(10, append, clear);
        hBox.setAlignment(Pos.CENTER);
        root.add(hBox, 30, 13, 100, 1);
        
        Scene scene = new Scene(root, 300, 250);
        
        setTitle("TextAreaExample");
        setScene(scene);
        show();
    }
}