# | Line 120 | Line 120 | public interface Queue<E> extends Collec | |
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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> |
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