diff --git a/src/fr/devinsy/strings/StringList.java b/src/fr/devinsy/strings/StringList.java
index 6548d31..c2066c1 100644
--- a/src/fr/devinsy/strings/StringList.java
+++ b/src/fr/devinsy/strings/StringList.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2020 Christian Pierre MOMON
+ * Copyright (C) 2008-2021 Christian Pierre MOMON
  * 
  * This file is part of Devinsy-strings.
  * 
diff --git a/src/fr/devinsy/strings/demo/StringsDemo.java b/src/fr/devinsy/strings/demo/StringsDemo.java
index d48fa45..9cd0482 100644
--- a/src/fr/devinsy/strings/demo/StringsDemo.java
+++ b/src/fr/devinsy/strings/demo/StringsDemo.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017-2018 Christian Pierre MOMON
+ * Copyright (C) 2017-2021 Christian Pierre MOMON
  * 
  * This file is part of Devinsy-strings.
  * 
@@ -58,14 +58,14 @@ public class StringsDemo
 			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("Boolean:             ").append(true).append(" ").appendln(Boolean.valueOf(false));
+			strings.append("Char:                ").append('e').append(" ").appendln(Character.valueOf('e'));
+			strings.append("Byte :               ").append((byte) 5).append(" ").appendln(Byte.valueOf((byte) 5));
+			strings.append("Short:               ").append((short) 55).append(" ").appendln(Short.valueOf((short) 55));
+			strings.append("Integer:             ").append(555).append(" ").appendln(Integer.valueOf(555));
+			strings.append("Long:                ").append(5555L).append(" ").appendln(Long.valueOf(5555));
+			strings.append("Float:               ").append((float) 5555.5).append(" ").appendln(Float.valueOf((float) 5555.5));
+			strings.append("Double:              ").append(5555.55).append(" ").appendln(Double.valueOf(5555.55));
 			strings.append("String:              ").append("abcde").append(" ").appendln(new String("abcde"));
 			strings.append("Object:              ").appendln(new Date());
 			strings.append("Array of booleans:   ").appendln(StringsUtils.toStringList(new boolean[] { true, false, true }));
@@ -109,7 +109,7 @@ public class StringsDemo
 			strings.appendln("========== DEMO #4;");
 			strings.appendln();
 			strings.appendln("Advanced features.");
-			strings.append("Boolean:           ").append(true).append(" ").appendln(new Boolean(false));
+			strings.append("Boolean:           ").append(true).append(" ").appendln(Boolean.valueOf(false));
 
 			System.out.println(strings.toString());
 		}
@@ -121,7 +121,7 @@ public class StringsDemo
 			strings.appendln("========== DEMO #5;");
 			strings.appendln();
 			strings.appendln("Funny features.");
-			strings.append("Boolean:           ").append(true).append(" ").appendln(new Boolean(false));
+			strings.append("Boolean:           ").append(true).append(" ").appendln(Boolean.valueOf(false));
 
 			System.out.println(strings.toString());
 		}
diff --git a/test/fr/devinsy/strings/StringListTest.java b/test/fr/devinsy/strings/StringListTest.java
index 183e11e..b785e3f 100644
--- a/test/fr/devinsy/strings/StringListTest.java
+++ b/test/fr/devinsy/strings/StringListTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013-2020 Christian Pierre MOMON
+ * Copyright (C) 2013-2021 Christian Pierre MOMON
  * 
  * This file is part of Devinsy-strings.
  *