120 |
|
* preferable to method {@link Collection#add}, which can fail to |
121 |
|
* insert an element only by throwing an exception. |
122 |
|
* |
123 |
< |
* @param o the element to insert. |
123 |
> |
* @param e the element to insert. |
124 |
|
* @return <tt>true</tt> if it was possible to add the element to |
125 |
|
* this queue, else <tt>false</tt> |
126 |
|
*/ |
127 |
< |
boolean offer(E o); |
127 |
> |
boolean offer(E e); |
128 |
|
|
129 |
|
/** |
130 |
|
* Retrieves and removes the head of this queue, or <tt>null</tt> |
137 |
|
|
138 |
|
/** |
139 |
|
* Retrieves and removes the head of this queue. This method |
140 |
< |
* differs from the <tt>poll</tt> method in that it throws an |
140 |
> |
* differs from the {@link #poll} method only in that it throws an |
141 |
|
* exception if this queue is empty. |
142 |
|
* |
143 |
|
* @return the head of this queue. |
156 |
|
|
157 |
|
/** |
158 |
|
* Retrieves, but does not remove, the head of this queue. This method |
159 |
< |
* differs from the <tt>peek</tt> method only in that it throws an |
159 |
> |
* differs from the {@link #peek} method only in that it throws an |
160 |
|
* exception if this queue is empty. |
161 |
|
* |
162 |
|
* @return the head of this queue. |