| # | Line 13 | Line 13 | import java.io.*; | |
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| 13 | * usage. They are not thread-safe; in the absence of external | |
| 14 | * synchronization, they do not support concurrent access by multiple threads. | |
| 15 | * Null elements are prohibited. This class is likely to be faster than | |
| 16 | < | * {@link Stack} when used as as a stack, and faster than {@link LinkedList} |
| 16 | > | * {@link Stack} when used as a stack, and faster than {@link LinkedList} |
| 17 | * when used as a queue. | |
| 18 | * | |
| 19 | * <p>Most <tt>ArrayDeque</tt> operations run in amortized constant time. | |
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