diff --git a/src/fr/devinsy/util/strings/demo/Demo.java b/src/fr/devinsy/util/strings/demo/Demo.java
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+/*
+ * Copyright (C) 2017 Christian Pierre MOMON
+ * 
+ * This file is part of Devinsy-strings.
+ * 
+ * Devinsy-strings is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * Devinsy-strings is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Devinsy-strings.  If not, see <http://www.gnu.org/licenses/>
+ */
+package fr.devinsy.util.strings.demo;
+
+import java.util.ArrayList;
+import java.util.Date;
+
+import fr.devinsy.util.strings.StringList;
+
+/**
+ * The Class Demo.
+ */
+public class Demo
+{
+
+	/**
+	 * The main method.
+	 * 
+	 * @param args
+	 *            the arguments
+	 */
+	public static void main(final String[] args)
+	{
+		// #1
+		{
+			StringList strings = new StringList();
+
+			strings.appendln("========== DEMO #1;");
+			strings.appendln();
+			strings.appendln("Need to concatenate arbitrary number of string?");
+			strings.appendln("Don't know what will be the final size?");
+			strings.appendln("So StringBuilder and StringBuffer are not efficient.");
+			strings.appendln("Choose StringList!");
+
+			System.out.println(strings.toString());
+		}
+
+		// #2
+		{
+			StringList strings = new StringList();
+
+			strings.appendln("========== DEMO #2;");
+			strings.appendln();
+			strings.appendln("Easy to concatenate different types.");
+			strings.append("Boolean:         ").append(true).append(" ").appendln(new Boolean(false));
+			strings.append("Char:            ").append('e').append(" ").appendln(new Character('e'));
+			strings.append("Byte :           ").append((byte) 5).append(" ").appendln(new Byte((byte) 5));
+			strings.append("Short:           ").append((short) 55).append(" ").appendln(new Short((short) 55));
+			strings.append("Integer:         ").append(555).append(" ").appendln(new Integer(555));
+			strings.append("Long:            ").append(5555L).append(" ").appendln(new Long(5555));
+			strings.append("Float:           ").append((float) 5555.5).append(" ").appendln(new Float(5555.5));
+			strings.append("Double:          ").append(5555.55).append(" ").appendln(new Double(5555.55));
+			strings.append("String:          ").append("abcde").append(" ").appendln(new String("edcba"));
+			strings.append("Object:          ").appendln(new Date());
+			strings.append("Array of boolean:").appendln(new boolean[] { true, false, true });
+			strings.append("Array of char:   ").appendln(new char[] { 'a', 'b', 'c' });
+			strings.append("Array of byte:   ").appendln(new byte[] { (byte) 1, (byte) 2, (byte) 3 });
+			strings.append("Array of short:  ").appendln(new short[] { (short) 1, (short) 2, (short) 3 });
+			strings.append("Array of string: ").appendln(new String[] { "a", "b", "c" });
+			ArrayList<String> buffer = new ArrayList<String>();
+			buffer.add("aa");
+			buffer.add("bb");
+			buffer.add("cc");
+			strings.append("Collections:     ").appendln(buffer);
+
+			System.out.println(strings.toString());
+		}
+	}
+}