Returns a view of the portion of this set whose elements are less than
(or equal to, if {@code inclusive} is true) {@code toElement}. The
returned set is backed by this set, so changes in the returned set are
reflected in this set, and vice-versa. The returned set supports all
optional set operations that this set supports.
<p>The returned set will throw an {@code IllegalArgumentException}
on an attempt to insert an element outside its range.
@param toElement high endpoint of the returned set
@param inclusive {@code true} if the high endpoint
is to be included in the returned view
@return a view of the portion of this set whose elements are less than
(or equal to, if {@code inclusive} is true) {@code toElement}
@throws ClassCastException if {@code toElement} is not compatible
with this set's comparator (or, if the set has no comparator,
if {@code toElement} does not implement {@link Comparable}).
Implementations may, but are not required to, throw this
exception if {@code toElement} cannot be compared to elements
currently in the set.
@throws NullPointerException if {@code toElement} is null and
this set does not permit null elements
@throws IllegalArgumentException if this set itself has a
restricted range, and {@code toElement} lies outside the
bounds of the range
Returns a view of the portion of this set whose elements are less than (or equal to, if {@code inclusive} is true) {@code toElement}. The returned set is backed by this set, so changes in the returned set are reflected in this set, and vice-versa. The returned set supports all optional set operations that this set supports.
<p>The returned set will throw an {@code IllegalArgumentException} on an attempt to insert an element outside its range.
@param toElement high endpoint of the returned set @param inclusive {@code true} if the high endpoint is to be included in the returned view @return a view of the portion of this set whose elements are less than (or equal to, if {@code inclusive} is true) {@code toElement} @throws ClassCastException if {@code toElement} is not compatible with this set's comparator (or, if the set has no comparator, if {@code toElement} does not implement {@link Comparable}). Implementations may, but are not required to, throw this exception if {@code toElement} cannot be compared to elements currently in the set. @throws NullPointerException if {@code toElement} is null and this set does not permit null elements @throws IllegalArgumentException if this set itself has a restricted range, and {@code toElement} lies outside the bounds of the range