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<TITLE>Converting a Collection to an Array
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<h3>
e340.
Converting a Collection to an Array</h3>
<pre>
// Create an array containing the elements in a list
Object[] objectArray = <font color="#0066ff"><i>list</i></font>.toArray();
<font color="#0066ff"><i>MyClass</i></font>[] array = (<font color="#0066ff"><i>MyClass</i></font>[])<font color="#0066ff"><i>list</i></font>.toArray(new <font color="#0066ff"><i>MyClass</i></font>[<font color="#0066ff"><i>list</i></font>.size()]);
// Create an array containing the elements in a set
objectArray = <font color="#0066ff"><i>set</i></font>.toArray();
array = (<font color="#0066ff"><i>MyClass</i></font>[])<font color="#0066ff"><i>set</i></font>.toArray(new <font color="#0066ff"><i>MyClass</i></font>[<font color="#0066ff"><i>set</i></font>.size()]);
// Create an array containing the keys in a map
objectArray = <font color="#0066ff"><i>map</i></font>.keySet().toArray();
array = (<font color="#0066ff"><i>MyClass</i></font>[])<font color="#0066ff"><i>map</i></font>.keySet().toArray(new <font color="#0066ff"><i>MyClass</i></font>[<font color="#0066ff"><i>set</i></font>.size()]);
// Create an array containing the values in a map
objectArray = <font color="#0066ff"><i>map</i></font>.values().toArray();
array = (<font color="#0066ff"><i>MyClass</i></font>[])<font color="#0066ff"><i>map</i></font>.values().toArray(new <font color="#0066ff"><i>MyClass</i></font>[<font color="#0066ff"><i>set</i></font>.size()]);
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Related Examples
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e338. <a class="eglink" href="coll_CompArray.html?l=rel">
Comparing Arrays
</a>
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e339. <a class="eglink" href="coll_Shuffle.html?l=rel">
Shuffling the Elements of a List or Array
</a>
<br>
e341. <a class="eglink" href="coll_Array2Col.html?l=rel">
Converting an Array to a Collection
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See also:
<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Bits">
Bits
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Collections">
Collections
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Dates">
Dates
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Hash%20Tables">
Hash Tables
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Lists">
Lists
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Property%20Files">
Property Files
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Sets">
Sets
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Sorted%20Collections">
Sorted Collections
</a>
<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Time">
Time
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Timers">
Timers
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