Method concat

guava/src/com/google/common/collect/ObjectArrays.java:78–85

Returns a new array that contains the concatenated contents of two arrays. @param first the first array of elements to concatenate @param second the second array of elements to concatenate @param type the component type of the returned array

(
      T[] first, T[] second, Class<@NonNull T> type)

   * @param type the component type of the returned array
   */
  @GwtIncompatible // Array.newInstance(Class, int)
  public static <T extends @Nullable Object> T[] concat(
      T[] first, T[] second, Class<@NonNull T> type) {
    T[] result = newArray(type, first.length + second.length);
    arraycopy(first, 0, result, 0, first.length);
    arraycopy(second, 0, result, first.length, second.length);
    return result;
  }

  /**
   * Returns a new array that prepends {@code element} to {@code array}.