Working with Date and Time

Author: AnghelLeonard

Chapter03/P81_WeekDayName/src/main/java/modern/challenge/Main.java

@@ -7,10 +7,9 @@ public class Main {
 
     public static void main(String[] args) {
 
-        String[] weekdays = new DateFormatSymbols().getWeekdays();
+        String[] weekdays = new DateFormatSymbols().getWeekdays();                
 
-        IntStream.range(0, weekdays.length)
-                 .filter(t -> !weekdays[t].isBlank())
+        IntStream.range(1, weekdays.length)                 
                  .mapToObj(t -> String.format("Day: %d -> %s", t, weekdays[t]))
                  .forEach(System.out::println);          
     }

Chapter03/P82_FirstLastDayOfYear/src/main/java/modern/challenge/DateCheckers.java

@@ -14,7 +14,7 @@ private DateCheckers() {
         throw new AssertionError("Cannot be instantiated");
     }
 
-    public static String firstDayOfYearV1(int year, boolean name) {
+    public static String fetchFirstDayOfYearV1(int year, boolean name) {
 
         Calendar calendar = Calendar.getInstance();
         calendar.set(Calendar.YEAR, year);
@@ -29,7 +29,7 @@ public static String firstDayOfYearV1(int year, boolean name) {
         return new SimpleDateFormat("EEEE").format(firstDay);
     }
 
-    public static String firstDayOfYearV2(int year, boolean name) {
+    public static String fetchFirstDayOfYearV2(int year, boolean name) {
 
         LocalDate ld = LocalDate.ofYearDay(year, 1);
         LocalDate firstDay = ld.with(firstDayOfYear());
@@ -41,7 +41,7 @@ public static String firstDayOfYearV2(int year, boolean name) {
         return DateTimeFormatter.ofPattern("EEEE").format(firstDay);
     }
 
-    public static String lastDayOfYearV1(int year, boolean name) {
+    public static String fetchLastDayOfYearV1(int year, boolean name) {
 
         Calendar calendar = Calendar.getInstance();
         calendar.set(Calendar.YEAR, year);
@@ -56,7 +56,7 @@ public static String lastDayOfYearV1(int year, boolean name) {
         return new SimpleDateFormat("EEEE").format(lastDay);
     }
 
-    public static String lastDayOfYearV2(int year, boolean name) {
+    public static String fetchLastDayOfYearV2(int year, boolean name) {
 
         LocalDate ld = LocalDate.ofYearDay(year, 31);
         LocalDate lastDay = ld.with(lastDayOfYear());

Chapter03/P82_FirstLastDayOfYear/src/main/java/modern/challenge/Main.java

@@ -4,16 +4,16 @@ public class Main {
 
     public static void main(String[] args) {
 
-        System.out.println(DateCheckers.firstDayOfYearV1(2020, false));
-        System.out.println(DateCheckers.firstDayOfYearV1(2020, true));
-        System.out.println(DateCheckers.lastDayOfYearV1(2020, false));
-        System.out.println(DateCheckers.lastDayOfYearV1(2020, true));
+        System.out.println(DateCheckers.fetchFirstDayOfYearV1(2020, false));
+        System.out.println(DateCheckers.fetchFirstDayOfYearV1(2020, true));
+        System.out.println(DateCheckers.fetchLastDayOfYearV1(2020, false));
+        System.out.println(DateCheckers.fetchLastDayOfYearV1(2020, true));
 
         System.out.println();
 
-        System.out.println(DateCheckers.firstDayOfYearV2(2020, false));
-        System.out.println(DateCheckers.firstDayOfYearV2(2020, true));
-        System.out.println(DateCheckers.lastDayOfYearV2(2020, false));
-        System.out.println(DateCheckers.lastDayOfYearV2(2020, true));
+        System.out.println(DateCheckers.fetchFirstDayOfYearV2(2020, false));
+        System.out.println(DateCheckers.fetchFirstDayOfYearV2(2020, true));
+        System.out.println(DateCheckers.fetchLastDayOfYearV2(2020, false));
+        System.out.println(DateCheckers.fetchLastDayOfYearV2(2020, true));
     }
 }