GUI logger

Sat Nov 27, 2010 10:58 pm

The following class is simple idea which you can have a text area to log events in your desktop application , as you may notice that the textArea ref is final and static , so we will have one textarea all over the application process.

Code:: import java.util.Date; import javax.swing.JScrollPane; import javax.swing.JTextArea; public class GUILogger { private static GUILogger logger = null; private static final JTextArea textArea = new JTextArea(7, 50); private static final JScrollPane TextAreaScroll = new JScrollPane (textArea, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS); private GUILogger() { } public static GUILogger getInstance() { if (logger == null) { logger = new GUILogger(); } return logger; } public void logInfo(String info) { textArea.append("\n" + new Date() + ": " + info); } public static GUILogger getLogger() { return logger; } public static void setLogger(GUILogger logger) { GUILogger.logger = logger; } public static JScrollPane getTextAreaScroll() { return TextAreaScroll; } public static JTextArea getTextArea() { return textArea; } }

Add it to a panel .

Code:: import java.awt.BorderLayout; import javax.swing.JPanel; public class LogPanel extends JPanel { private GUILogger gUILogger = GUILogger.getInstance(); public LogPanel() { add(gUILogger.getTextAreaScroll()); } }