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*/ |
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package java.util; |
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+ |
import java.util.*; // for javadoc (till 6280605 is fixed) |
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/** |
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* A {@link SortedSet} extended with navigation methods reporting |
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* Methods <tt>navigableSubSet</tt>, <tt>navigableHeadSet</tt>, and |
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* <tt>navigableTailSet</tt> differ from the similarly named |
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* <tt>SortedSet</tt> methods only in their declared return types. |
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< |
* Subsets of any <tt>NavigableSet</tt> must obey |
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< |
* the <tt>NavigableSet</tt> interface. |
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< |
* |
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< |
* are guaranteed to obey the <tt>NavigableSet</tt> interface. |
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> |
* Subsets of any <tt>NavigableSet</tt> must implement the |
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> |
* <tt>NavigableSet</tt> interface. |
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* |
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* <p> The return values of navigation methods may be ambiguous in |
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* implementations that permit <tt>null</tt> elements. However, even |
