In this example we shall show you how to get a TreeSet Iterator. To get a TreeSet Iterator one should perform the following steps:
- Create a new TreeSet.
- Populate the set with elements, with
add(E e)API method of TreeSet. - Obtain an Iterator of the set, with
iterator() API method of TreeSet. It is an iterator over the elements in this set in ascending order. - Iterate over the set’s elements, with
hasNext(),next()API methods of Iterator, to get the TreeSet’s elements,
as described in the code snippet below.
package com.javacodegeeks.snippets.core;
import java.util.TreeSet;
import java.util.Iterator;
public class TreeSetIteratorExample {
public static void main(String[] args) {
// Create a TreeSet and populate it with elements
TreeSet treeSet = new TreeSet();
treeSet.add("element_1");
treeSet.add("element_2");
treeSet.add("element_3");
// To get the Iterator use the iterator() operation
Iterator it = treeSet.iterator();
System.out.println("Elements in TreeSet :");
while(it.hasNext())
System.out.println(it.next());
}
}
Output:
Elements in TreeSet :
element_1
element_2
element_3
This was an example of how to get a TreeSet Iterator in Java.
