how to iterate hashset in java 8

To iterate through the elements of a HashSet object in Java 8, you can use the forEach method of the Set interface, which is implemented by the HashSet class.

Here is an example of how you can use the forEach method to print the elements of a HashSet:

HashSet<String> set = new HashSet<>();
set.add("element1");
set.add("element2");
set.add("element3");

set.forEach(System.out::println);

This will print the elements of the HashSet in the order they were added.

Keep in mind that the HashSet class does not maintain the order in which the elements were added, so the order in which the elements are printed may not be the same as the order in which they were added. If you need to maintain the insertion order, you can use a LinkedHashSet instead of a HashSet.

You can also use the for-each loop or the Iterator class to iterate through the elements of a HashSet. Here is an example using the for-each loop:

HashSet<String> set = new HashSet<>();
set.add("element1");
set.add("element2");
set.add("element3");

for (String element : set) {
    System.out.println(element);
}

And here is an example using the Iterator class:

HashSet<String> set = new HashSet<>();
set.add("element1");
set.add("element2");
set.add("element3");

Iterator<String> iterator = set.iterator();
while (iterator.hasNext()) {
    String element = iterator.next();
    System.out.println(element);
}