TreeSet iterator() Method in Java
Last Updated :
26 Nov, 2018
The Java.util.TreeSet.iterator() method is used to return an iterator of the same elements as that of the TreeSet. The elements are returned in random order from what was present in the Tree set.
Syntax:
Iterator iterate_value = Tree_Set.iterator();
Parameters: The function does not take any parameter.
Return Value: The method iterates over the elements of the Tree set and returns the values(iterators).
Below program illustrates the use of Java.util.TreeSet.iterator() method:
import java.util.*;
import java.util.TreeSet;
public class TreeSetDemo {
public static void main(String args[])
{
TreeSet<String> set = new TreeSet<String>();
set.add( "Welcome" );
set.add( "To" );
set.add( "Geeks" );
set.add( "4" );
set.add( "Geeks" );
System.out.println( "TreeSet: " + set);
Iterator value = set.iterator();
System.out.println( "The iterator values are: " );
while (value.hasNext()) {
System.out.println(value.next());
}
}
}
|
Output:
TreeSet: [4, Geeks, To, Welcome]
The iterator values are:
4
Geeks
To
Welcome
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