src/jdk.localedata/share/classes/sun/text/resources/ext/JavaTimeSupplementary_nl.java

*** 263,281 ****
--- 263,283 ----
                      "na Christus",
                      "Meiji",
                      "Taish\u014d",
                      "Sh\u014dwa",
                      "Heisei",
+                     "Reiwa",
                  }
              },
              { "java.time.japanese.short.Eras",
                  new String[] {
                      "n.Chr.",
                      "Meiji",
                      "Taish\u014d",
                      "Sh\u014dwa",
                      "Heisei",
+                     "Reiwa",
                  }
              },
              { "java.time.long.Eras",
                  new String[] {
                      "voor Christus",