docs: update raii

resource-acquisition-is-initialization/src/main/java/com/iluwatar/resource/acquisition/is/initialization/App.java

@@ -51,7 +51,7 @@ public class App {
   /**
    * Program entry point.
    */
-  public static void main(String[] args) throws Exception {
+  public static void main(String[] args) {
 
     try (var ignored = new SlidingDoor()) {
       LOGGER.info("Walking in.");

resource-acquisition-is-initialization/src/test/java/com/iluwatar/resource/acquisition/is/initialization/ClosableTest.java

@@ -68,7 +68,7 @@ class ClosableTest {
   /**
    * Logging Appender Implementation
    */
-  class InMemoryAppender extends AppenderBase<ILoggingEvent> {
+  static class InMemoryAppender extends AppenderBase<ILoggingEvent> {
     private final List<ILoggingEvent> log = new LinkedList<>();
 
     public InMemoryAppender() {
@@ -85,5 +85,4 @@ class ClosableTest {
       return log.stream().anyMatch(event -> event.getMessage().equals(message));
     }
   }
-
 }