Updates Launch Multi-File Source-Code Programs example

Signed-off-by: Manoel Campos <manoelcampos@gmail.com>

src/main/java/Jdk22Class2.java → src/main/java/Jdk22SubClass.java

@@ -1,20 +1,19 @@
 /**
  * A sample class that doesn't belong to any package,
- * that uses {@link Jdk22Class1}, and enables you to compile
+ * that uses {@link Jdk22SuperClass}, and enables you to compile
  * all required classes and run this {@link #main(String[])} method
  * just typing at the terminal: {@snippet lang=bash : java Jdk22Class2.java}
  *
  * @author Manoel Campos
  * @see <a href="https://openjdk.org/jeps/458">https://openjdk.org/jeps/458</a>
  */
-public class Jdk22Class2 {
-    private final Jdk22Class1 class1 = new Jdk22Class1("class1");
-
+public class Jdk22SubClass extends Jdk22SuperClass{
     public static void main(String[] args) {
-        new Jdk22Class2();
+        var obj = new Jdk22SubClass("Manoel");
+        System.out.println("Name: " + obj.getName());
     }
 
-    public Jdk22Class2() {
-        System.out.println("Name: " + class1.getName());
+    public Jdk22SubClass(String name) {
+        super(name);
     }
 }

src/main/java/Jdk22Class1.java → src/main/java/Jdk22SuperClass.java

@@ -1,14 +1,14 @@
 /**
- * A class that is used by {@link Jdk22Class2} in order to show
+ * A class that is used by {@link Jdk22SubClass} in order to show
  * the Launch Multi-File Source-Code Programs feature.
  * @author Manoel Campos
- * @see Jdk22Class2
+ * @see Jdk22SubClass
  */
-public class Jdk22Class1
+public class Jdk22SuperClass
 {
     private final String name;
 
-    public Jdk22Class1(String name) {
+    public Jdk22SuperClass(String name) {
         this.name = name;
     }