Method wrap

output/java_guava/1.4.18/Primitives.java:121–128

Returns the corresponding wrapper type of type if it is a primitive type; otherwise returns type itself. Idempotent. wrap(int.class) == Integer.class wrap(Integer.class) == Integer.class wrap(String.class) == String.class

(Class<T> type)

  public static <T> Class<T> wrap(Class<T> type) {
    checkNotNull(type);

    // cast is safe: long.class and Long.class are both of type Class<Long>
    @SuppressWarnings("unchecked")
    Class<T> wrapped = (Class<T>) PRIMITIVE_TO_WRAPPER_TYPE.get(type);
    return (wrapped == null) ? type : wrapped;
  }

  /**
   * Returns the corresponding primitive type of {@code type} if it is a wrapper type; otherwise