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Copy all elements of Java HashSet to an Object Array
Declare a HashSet and add elements −
Set<Integer> hs = new HashSet<Integer>(); hs.add(15); hs.add(71); hs.add(82); hs.add(89); hs.add(91); hs.add(93); hs.add(97); hs.add(99);
To copy all the elements, use the toArray() method −
Object[] obArr = hs.toArray();
The following is an example to copy all elements to HashSet to an object array −
Example
import java.util.*;
public class Demo {
public static void main(String args[]) {
Set<Integer> hs = new HashSet<Integer>();
hs.add(15);
hs.add(71);
hs.add(82);
hs.add(89);
hs.add(91);
hs.add(93);
hs.add(97);
hs.add(99);
System.out.println("Elements in set = "+hs);
System.out.println("Copying all elements...");
Object[] obArr = hs.toArray();
for (Object ob : obArr)
System.out.println(ob);
}
}Output
Elements in set = [97, 82, 99, 71, 89, 91, 93, 15] Copying all elements... 97 82 99 71 89 91 93 15
Updated on: 25-Jun-2020
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