src/java.base/share/classes/java/time/format/DateTimeParseContext.java

*** 397,407 ****
       * if the Chronology changes.
       * @param listener a Consumer<Chronology> to be called when Chronology changes
       */
      void addChronoChangedListener(Consumer<Chronology> listener) {
          if (chronoListeners == null) {
!             chronoListeners = new ArrayList<Consumer<Chronology>>();
          }
          chronoListeners.add(listener);
      }
  
      /**
--- 397,407 ----
       * if the Chronology changes.
       * @param listener a Consumer<Chronology> to be called when Chronology changes
       */
      void addChronoChangedListener(Consumer<Chronology> listener) {
          if (chronoListeners == null) {
!             chronoListeners = new ArrayList<>();
          }
          chronoListeners.add(listener);
      }
  
      /**