source: MotivateDuringTherapy/src/main/java/tudelft/mentalhealth/motivatepersisting/Example.java@ 7

package tudelft.mentalhealth.motivatepersisting;

import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Locale;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;

/**
 * An interactive example showing the {@link MotivationalAnswer}
 */
public class Example extends JFrame {
        private final ComboWithLabel<PclTrend> trend = new ComboWithLabel<PclTrend>(
                        PclTrend.values(), "PCL Trend");
        private final ComboWithLabel<Trust> trust = new ComboWithLabel<Trust>(
                        Trust.values(), "trust");
        private final JButton textButton = new JButton("make text");
        private final JTextArea text = new JTextArea(4, 50);
        private final Locale NL = new Locale("NL", "nl");
        private final Locale EN = new Locale("en", "");
        private final ComboWithLabel<Locale> locales = new ComboWithLabel<Locale>(
                        new Locale[] { NL, EN }, "language");

        public Example() {
                setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                add(panel());

                textButton.addActionListener(new ActionListener() {
                        @Override
                        public void actionPerformed(ActionEvent e) {
                                Situation situation = new Situation(trend.getSelectedItem(),
                                                trust.getSelectedItem());
                                Locale locale = locales.getSelectedItem();
                                text.setText(
                                                new MotivationalAnswer(situation, locale).getText());
                        }
                });

                pack();
                setVisible(true);

        }

        private JPanel panel() {
                JPanel panel = new JPanel(new BorderLayout());
                text.setWrapStyleWord(true);
                text.setLineWrap(true);
                panel.add(text, BorderLayout.CENTER);
                JPanel buttons = new JPanel(new FlowLayout());
                buttons.add(trend);
                buttons.add(trust);
                buttons.add(locales);
                buttons.add(textButton);
                panel.add(buttons, BorderLayout.SOUTH);

                return panel;
        }

        public static void main(String[] args) {
                new Example();
        }
}

/**
 * Combobox with a label
 *
 * @param <T> the element type of the combobox.
 */
@SuppressWarnings("serial")
class ComboWithLabel<T> extends JPanel {
        private JComboBox combo;

        public ComboWithLabel(T[] items, String label) {
                this.combo = new JComboBox<>(items);
                setLayout(new BorderLayout());
                add(new JLabel("     " + label), BorderLayout.NORTH);
                add(combo, BorderLayout.SOUTH);
        }

        @SuppressWarnings("unchecked")
        public T getSelectedItem() {
                return (T) combo.getSelectedItem();
        }
}