| 165 |
|
|
| 166 |
|
/** |
| 167 |
|
* Returns <tt>true</tt> if this set contains the specified element. |
| 168 |
+ |
* More formally, returns <tt>true</tt> if and only if this set |
| 169 |
+ |
* contains an element <tt>e</tt> such that <tt>o.equals(e)</tt>. |
| 170 |
|
* |
| 171 |
< |
* @param o the object to be checked for containment in this set |
| 171 |
> |
* @param o object to be checked for containment in this set |
| 172 |
|
* @return <tt>true</tt> if this set contains the specified element |
| 173 |
|
* @throws ClassCastException if the specified element cannot be |
| 174 |
< |
* compared with the elements currently in the set |
| 174 |
> |
* compared with the elements currently in this set |
| 175 |
|
* @throws NullPointerException if the specified element is null |
| 176 |
|
*/ |
| 177 |
|
public boolean contains(Object o) { |
| 180 |
|
|
| 181 |
|
/** |
| 182 |
|
* Adds the specified element to this set if it is not already present. |
| 183 |
+ |
* More formally, adds the specified element <tt>e</tt> to this set if |
| 184 |
+ |
* the set contains no element <tt>e2</tt> such that <tt>e.equals(e2)</tt>. |
| 185 |
+ |
* If this set already contains the element, the call leaves the set |
| 186 |
+ |
* unchanged and returns <tt>false</tt>. |
| 187 |
|
* |
| 188 |
|
* @param e element to be added to this set |
| 189 |
< |
* @return <tt>true</tt> if the set did not already contain the |
| 189 |
> |
* @return <tt>true</tt> if this set did not already contain the |
| 190 |
|
* specified element |
| 191 |
|
* @throws ClassCastException if <tt>e</tt> cannot be compared |
| 192 |
< |
* with the elements currently in the set |
| 192 |
> |
* with the elements currently in this set |
| 193 |
|
* @throws NullPointerException if the specified element is null |
| 194 |
|
*/ |
| 195 |
|
public boolean add(E e) { |
| 198 |
|
|
| 199 |
|
/** |
| 200 |
|
* Removes the specified element from this set if it is present. |
| 201 |
+ |
* More formally, removes an element <tt>e</tt> such that |
| 202 |
+ |
* <tt>o.equals(e)</tt>, if this set contains such an element. |
| 203 |
+ |
* Returns <tt>true</tt> if this set contained the element (or |
| 204 |
+ |
* equivalently, if this set changed as a result of the call). |
| 205 |
+ |
* (This set will not contain the element once the call returns.) |
| 206 |
|
* |
| 207 |
|
* @param o object to be removed from this set, if present |
| 208 |
< |
* @return <tt>true</tt> if the set contained the specified element |
| 208 |
> |
* @return <tt>true</tt> if this set contained the specified element |
| 209 |
|
* @throws ClassCastException if <tt>o</tt> cannot be compared |
| 210 |
< |
* with the elements currently in the set |
| 210 |
> |
* with the elements currently in this set |
| 211 |
|
* @throws NullPointerException if the specified element is null |
| 212 |
|
*/ |
| 213 |
|
public boolean remove(Object o) { |
