queue method in Java

```
import java.util.LinkedList;
import java.util.Queue;
  
public class Main {
    public static void main(String[] args) {
        Queue<Integer> q = new LinkedList<>();
  
        for (int i = 0; i < 5; i++)
            q.add(i);
  
        int head = q.peek();
        int removed = q.remove();
        int size = q.size();
    }
}
```