# HashSet

A hash-based Set with no guaranteed iteration order.

## What is **HashSet** in Java?

**HashSet** — A hash-based Set with no guaranteed iteration order.

```java
import java.util.HashSet;
import java.util.Set;

class TagCollection {
    Set<String> tags = new HashSet<>();
}
```

Level: Freelancer · [More Java terms at this level](https://www.ask-codey.com/glossary/subjects/java/freelancer)

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/hashset