source: simplerunner/src/main/java/geniusweb/simplerunner/gui/GUI.java@ 52

package geniusweb.simplerunner.gui;

import java.awt.BorderLayout;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.logging.Level;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;

import geniusweb.simplerunner.ClassPathConnectionFactory;
import geniusweb.simplerunner.Runner;
import tudelft.utilities.logging.Reporter;

/**
 * Simple GUI allowing users to create the settings interactively, much like on
 * the runserver
 *
 */
public class GUI extends JPanel {
        private JTextArea resultarea = new JTextArea(
                        "Results will appear here after run", 9, 40);
        private final SettingsPanel settingsPanel;

        public GUI() {
                setLayout(new BorderLayout());
                settingsPanel = new SettingsPanel();
                add(settingsPanel, BorderLayout.CENTER);
                add(startPanel(), BorderLayout.SOUTH);
        }

        private JPanel startPanel() {
                JPanel startpanel = new JPanel();
                startpanel.setLayout(new BorderLayout());
                JButton startbutton = new JButton("Start Session");
                startpanel.add(startbutton, BorderLayout.NORTH);
                startpanel.add(new JScrollPane(resultarea), BorderLayout.CENTER);

                startbutton.addActionListener(evt -> runsession());
                return startpanel;
        }

        private void runsession() {
                resultarea.setText("");
                Reporter myreporter = new Reporter() {

                        @Override
                        public void log(Level level, String msg) {
                                SwingUtilities.invokeLater(new Runnable() {
                                        @Override
                                        public void run() {
                                                resultarea.append("[" + level + "] " + msg + "\n");
                                        }
                                });
                        }

                        @Override
                        public void log(Level level, String msg, Throwable thrown) {
                                SwingUtilities.invokeLater(new Runnable() {

                                        @Override
                                        public void run() {
                                                resultarea
                                                                .append("[" + level + "] throws " + msg + "\n");
                                                StringWriter errors = new StringWriter();
                                                thrown.printStackTrace(new PrintWriter(errors));
                                                resultarea.append(errors.toString() + "\n");
                                        }
                                });
                        }
                };
                Runner runner = new Runner(settingsPanel.getSettings(),
                                new ClassPathConnectionFactory(), myreporter, 0);
                runner.run();
        }

        public static void main(String[] args) {
                JFrame frame = new JFrame("GeniusWeb SimpleRunner GUI");
                frame.add(new GUI());
                frame.pack();
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setVisible(true);
        }
}