Class AndPredicate

output/java_guava/1.4.17/Predicates.java:412–451

@see Predicates#and(Iterable)

  /** @see Predicates#and(Iterable) */
  private static class AndPredicate<T> implements Predicate<T>, Serializable {

    private final List<? extends Predicate<? super T>> components;
    private AndPredicate(List<? extends Predicate<? super T>> components) {
      this.components = components;
    }

    @Override
    public boolean apply(@Nullable T t) {
      // Avoid using the Iterator to avoid generating garbage (issue 820).
      for (int i = 0; i < components.size(); i++) {
        if (!components.get(i).apply(t)) {
          return false;
        }
      }
      return true;
    }

    @Override
    public int hashCode() {
      // add a random number to avoid collisions with OrPredicate
      return components.hashCode() + 0x12472c2c;
    }

    @Override
    public boolean equals(@Nullable Object obj) {
      if (obj instanceof AndPredicate) {
        AndPredicate<?> that = (AndPredicate<?>) obj;
        return components.equals(that.components);
      }
      return false;
    }

    @Override
    public String toString() {
      return "Predicates.and(" + COMMA_JOINER.join(components) + ")";
    }

    private static final long serialVersionUID = 0;
  }

  /** @see Predicates#or(Iterable) */