Added a date time check example

Author: botenbreuk

src/main/java/nl/rdb/java_examples/datetime/DateTimeExample.java

@@ -20,7 +20,7 @@ public class DateTimeExample {
 
     @Example
     void dateTime() {
-        LocalDateTime dateTime = LocalDateTime.of(2018, 11, 02, 12, 32, 22, 300);
+        LocalDateTime dateTime = LocalDateTime.of(2018, 11, 2, 12, 32, 22, 300);
         log.info(dateTime.toLocalTime().toString());
     }
 
@@ -72,6 +72,17 @@ record Test(LocalDateTime start, LocalDateTime end) {}
                 .forEach(v -> log.info("{}", v));
     }
 
+    @Example
+    void isAfterCheck() {
+        LocalDateTime start = LocalDateTime.now().plusDays(1).toLocalDate().atStartOfDay();
+        LocalDateTime end1 = start.plusHours(1);
+        LocalDateTime end2 = LocalDateTime.now().plusDays(1).toLocalDate().atStartOfDay();
+
+        log.info("Is end1 after {}", end1.isAfter(start) ? "Yes" : "No");
+        log.info("Is end2 after {}", end2.isAfter(start) ? "Yes" : "No");
+        log.info("Is end2 equal {}", end2.isEqual(start) ? "Yes" : "No");
+    }
+
     private List<LocalDateTime> countBusinessDays(LocalDateTime startDate, LocalDateTime endDate) {
         // Predicate 2: Is a given date is a weekday
         Predicate<LocalDateTime> isWeekend = date -> date.getDayOfWeek() == DayOfWeek.SATURDAY