refactor: renamed DateAndTimeFormatter to Formatters

BREAKING CHANGE: com.onixbyte.webcal.config.DateAndTimeFormatter is being moved to
com.onixbyte.webcal.config.Formatters

Author: zihluwang

…/webcal/config/DateAndTimeFormatter.java …m/onixbyte/webcal/config/Formatters.javawebcal/src/main/java/com/onixbyte/webcal/config/DateAndTimeFormatter.java renamed to webcal/src/main/java/com/onixbyte/webcal/config/Formatters.java webcal/src/main/java/com/onixbyte/webcal/config/DateAndTimeFormatter.java renamed to webcal/src/main/java/com/onixbyte/webcal/config/Formatters.java

@@ -26,7 +26,7 @@
  *
  * @author Zihlu Wang
  */
-public final class DateAndTimeFormatter {
+public final class Formatters {
 
     /**
      * Get the {@link java.time.format.DateTimeFormatter datetime formatter}
@@ -45,4 +45,10 @@ public static DateTimeFormatter getUtcDatetimeFormatter() {
 
     private static DateTimeFormatter utcDateTimeFormatter;
 
+    /**
+     * Private constructor to prevent this class being initialised.
+     */
+    private Formatters() {
+    }
+
 }

webcal/src/main/java/com/onixbyte/webcal/impl/WebCalendarEvent.java

@@ -19,7 +19,7 @@
 
 import com.onixbyte.webcal.WebCalendarNode;
 import com.onixbyte.webcal.config.Classification;
-import com.onixbyte.webcal.config.DateAndTimeFormatter;
+import com.onixbyte.webcal.config.Formatters;
 
 import java.text.MessageFormat;
 import java.time.Duration;
@@ -269,8 +269,8 @@ public String resolve() {
                         END:{0}""",
                 /* 0 - tag */TAG,
                 /* 1 - uid */ Optional.ofNullable(uid).orElse(UUID.randomUUID().toString()) + "@" + domainName,
-                /* 2 - dtstamp */ now.format(DateAndTimeFormatter.getUtcDatetimeFormatter()),
-                /* 3 - start time */ start.atZone(ZoneId.systemDefault()).format(DateAndTimeFormatter.getUtcDatetimeFormatter()),
+                /* 2 - dtstamp */ now.format(Formatters.getUtcDatetimeFormatter()),
+                /* 3 - start time */ start.atZone(ZoneId.systemDefault()).format(Formatters.getUtcDatetimeFormatter()),
                 /* 4 - summary */ Optional.ofNullable(summary).map((item) -> "\nSUMMARY:" + item).orElse(""),
                 /* 5 - categories */ Optional.ofNullable(categories)
                         .map((item) -> !item.isEmpty() ? "\nCATEGORIES:" + resolveCategories() : null).orElse(""),