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<TITLE>Creating a Sorted Set
(Java Developers Almanac Example)
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<h3>
e358.
Creating a Sorted Set</h3>
A sorted set is a set that maintains its elements in a sorted
order. Inserts and retrievals are more expensive in a sorted set but
iterations over the set is always in order.
<P> See also <a href="../java.util/coll_Sets.html" class="eglink"><font size="-1"><b>e352</b> Creating a Set</font></a>.
<pre>
// Create the sorted set
SortedSet set = new TreeSet();
// Add elements to the set
set.add(<font color="#0066ff"><i>"b"</i></font>);
set.add(<font color="#0066ff"><i>"c"</i></font>);
set.add(<font color="#0066ff"><i>"a"</i></font>);
// Iterating over the elements in the set
Iterator it = set.iterator();
while (it.hasNext()) {
// Get element
Object element = it.next();
}
// The elements are iterated in order: a, b, c
// Create an array containing the elements in a set (in this case a String array).
// The elements in the array are in order.
<font color="#0066ff"><i>String</i></font>[] array = (<font color="#0066ff"><i>String</i></font>[])set.toArray(new <font color="#0066ff"><i>String</i></font>[set.size()]);
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Related Examples
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e359. <a class="eglink" href="coll_SortArray.html?l=rel">
Sorting an Array
</a>
<br>
e360. <a class="eglink" href="coll_FindObjectInArray.html?l=rel">
Finding an Element in a Sorted Array
</a>
<br>
e361. <a class="eglink" href="coll_FindInList.html?l=rel">
Finding an Element in a Sorted List
</a>
<br>
e362. <a class="eglink" href="coll_InsertInList.html?l=rel">
Inserting an Element into a Sorted List
</a>
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See also:
<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Arrays">
Arrays
</a>
<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Bits">
Bits
</a>
<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Collections">
Collections
</a>
<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Dates">
Dates
</a>
<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Hash%20Tables">
Hash Tables
</a>
<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Lists">
Lists
</a>
<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Property%20Files">
Property Files
</a>
<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Sets">
Sets
</a>
<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Time">
Time
</a>
<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Timers">
Timers
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