[LANG-1680] FastDateFormat does not support the 'L'-Pattern from

SimpleDateFormat.

- Use final.
- Fix typos.
- In-line single use local variables.

src/changes/changes.xml

@@ -80,6 +80,7 @@ The <action> type attribute can be add,update,fix,remove.
     <action                   type="fix" dev="ggregory" due-to="Arturo Bernal">Make final mappingFunction variable #876.</action>
     <action                   type="fix" dev="ggregory" due-to="Arturo Bernal">Remove unnecessary variable creations #882.</action>
     <action                   type="fix" dev="ggregory" due-to="Arturo Bernal">Minor changes #769.</action>
+    <action issue="LANG-1680" type="fix" dev="ggregory" due-to="Michael Krause, Steve Bosman, Gary Gregory">FastDateFormat does not support the 'L'-Pattern from SimpleDateFormat.</action>
     <!-- ADD -->
     <action                   type="add" dev="ggregory" due-to="Gary Gregory">Add EnumUtils.getEnumSystemProperty(...).</action>
     <action                   type="add" dev="ggregory" due-to="Gary Gregory">Add TriConsumer.</action>

src/main/java/org/apache/commons/lang3/time/DateUtils.java

@@ -1860,9 +1860,9 @@ public class DateUtils {
         // Unfortunately standalone month names are not available in DateFormatSymbols,
         // so we have to extract them.
         final Calendar calendar = Calendar.getInstance(locale);
-        Map<String, Integer> displayNames = calendar.getDisplayNames(Calendar.MONTH, style, locale);
+        final Map<String, Integer> displayNames = calendar.getDisplayNames(Calendar.MONTH, style, locale);
         final String[] monthNames = new String[displayNames.size()];
-        for (Map.Entry<String, Integer> entry: displayNames.entrySet()) {
+        for (final Map.Entry<String, Integer> entry: displayNames.entrySet()) {
           monthNames[entry.getValue()] = entry.getKey();
         }
         return monthNames;

src/test/java/org/apache/commons/lang3/time/DateUtilsTest.java

@@ -1697,40 +1697,38 @@ public class DateUtilsTest {
 
     @Test
     public void testGetStandaloneLongMonthNames() {
-        Locale testLocale = Locale.GERMAN;
+        final String[] monthNames = DateUtils.getStandaloneLongMonths(Locale.GERMAN);
-        String[] standaloneShortMonths = DateUtils.getStandaloneLongMonths(testLocale);
+        assertEquals(12, monthNames.length);
-        assertEquals(12, standaloneShortMonths.length);
+        assertEquals("Januar", monthNames[0]);
-        assertEquals("Januar", standaloneShortMonths[0]);
+        assertEquals("Februar", monthNames[1]);
-        assertEquals("Februar", standaloneShortMonths[1]);
+        assertEquals("M\u00e4rz", monthNames[2]);
-        assertEquals("M\u00e4rz", standaloneShortMonths[2]);
+        assertEquals("April", monthNames[3]);
-        assertEquals("April", standaloneShortMonths[3]);
+        assertEquals("Mai", monthNames[4]);
-        assertEquals("Mai", standaloneShortMonths[4]);
+        assertEquals("Juni", monthNames[5]);
-        assertEquals("Juni", standaloneShortMonths[5]);
+        assertEquals("Juli", monthNames[6]);
-        assertEquals("Juli", standaloneShortMonths[6]);
+        assertEquals("August", monthNames[7]);
-        assertEquals("August", standaloneShortMonths[7]);
+        assertEquals("September", monthNames[8]);
-        assertEquals("September", standaloneShortMonths[8]);
+        assertEquals("Oktober", monthNames[9]);
-        assertEquals("Oktober", standaloneShortMonths[9]);
+        assertEquals("November", monthNames[10]);
-        assertEquals("November", standaloneShortMonths[10]);
+        assertEquals("Dezember", monthNames[11]);
-        assertEquals("Dezember", standaloneShortMonths[11]);
     }
 
     @Test
     public void testGetStandaloneShortMonthNames() {
-        Locale testLocale = Locale.GERMAN;
+        final String[] monthNames = DateUtils.getStandaloneShortMonths(Locale.GERMAN);
-        String[] standaloneShortMonths = DateUtils.getStandaloneShortMonths(testLocale);
+        assertEquals(12, monthNames.length);
-        assertEquals(12, standaloneShortMonths.length);
+        assertEquals("Jan", monthNames[0]);
-        assertEquals("Jan", standaloneShortMonths[0]);
+        assertEquals("Feb", monthNames[1]);
-        assertEquals("Feb", standaloneShortMonths[1]);
+        assertEquals("M\u00e4r", monthNames[2]);
-        assertEquals("M\u00e4r", standaloneShortMonths[2]);
+        assertEquals("Apr", monthNames[3]);
-        assertEquals("Apr", standaloneShortMonths[3]);
+        assertEquals("Mai", monthNames[4]);
-        assertEquals("Mai", standaloneShortMonths[4]);
+        assertEquals("Jun", monthNames[5]);
-        assertEquals("Jun", standaloneShortMonths[5]);
+        assertEquals("Jul", monthNames[6]);
-        assertEquals("Jul", standaloneShortMonths[6]);
+        assertEquals("Aug", monthNames[7]);
-        assertEquals("Aug", standaloneShortMonths[7]);
+        assertEquals("Sep", monthNames[8]);
-        assertEquals("Sep", standaloneShortMonths[8]);
+        assertEquals("Okt", monthNames[9]);
-        assertEquals("Okt", standaloneShortMonths[9]);
+        assertEquals("Nov", monthNames[10]);
-        assertEquals("Nov", standaloneShortMonths[10]);
+        assertEquals("Dez", monthNames[11]);
-        assertEquals("Dez", standaloneShortMonths[11]);
     }
 }
 

src/test/java/org/apache/commons/lang3/time/FastDateFormatTest.java

@@ -329,7 +329,7 @@ public class FastDateFormatTest {
     @Test
     public void testStandaloneShortMonthForm() {
         final TimeZone utc = FastTimeZone.getGmtTimeZone();
-        Instant testInstant = LocalDate.of(1970, 9, 15).atStartOfDay(ZoneId.of("UTC")).toInstant();
+        final Instant testInstant = LocalDate.of(1970, 9, 15).atStartOfDay(ZoneId.of("UTC")).toInstant();
         final Date date = Date.from(testInstant);
 
         String dateAsString = FastDateFormat.getInstance("yyyy-LLL-dd", utc, Locale.GERMAN).format(date);
@@ -345,7 +345,7 @@ public class FastDateFormatTest {
     @Test
     public void testStandaloneLongMonthForm() {
         final TimeZone utc = FastTimeZone.getGmtTimeZone();
-        Instant testInstant = LocalDate.of(1970, 9, 15).atStartOfDay(ZoneId.of("UTC")).toInstant();
+        final Instant testInstant = LocalDate.of(1970, 9, 15).atStartOfDay(ZoneId.of("UTC")).toInstant();
         final Date date = Date.from(testInstant);
 
         String dateAsString = FastDateFormat.getInstance("yyyy-LLLL-dd", utc, Locale.GERMAN).format(date);