This is an example of how to obtain a HashSet Iterator, that is an iterator over the elements of the HashSet. Obtaining a HashSet Iterator implies that you should:
- Create a new HashSet.
- Populate the hashSet with elements, using
add(E e)API method of HashSet. - Invoke
iterator()API method of HashSet. The method returns the Iterator over the elements in this hashSet. - Iterate over the elements of the HashSet, using
hasNext()andnext()API method of Iterator.
Let’s take a look at the code snippet that follows:
package com.javacodegeeks.snippets.core;
import java.util.HashSet;
import java.util.Iterator;
public class HashSetIteratorExample {
public static void main(String[] args) {
// Create a HashSet and populate it with elements
HashSet hashSet = new HashSet();
hashSet.add("element_1");
hashSet.add("element_2");
hashSet.add("element_3");
// To get the Iterator use the iterator() operation
Iterator it = hashSet.iterator();
System.out.println("Elements in HashSet :");
while(it.hasNext())
System.out.println(it.next());
}
}
Output:
Elements in HashSet :
element_1
element_2
element_3
This was an example of how to obtain a HashSet Iterator in Java.
