Write down the output of the following code. import java.util.HashSet; public class Main { public static void main(String[] args) { HashSet<String> cars = new HashSet<String>(); cars.add("Volvo"); cars.add("BMW"); cars.add("Ford"); cars.add("BMW"); System.out.println(cars); } }
时间: 2024-02-26 13:54:32 浏览: 282
The output of the code will be:
[BMW, Ford, Volvo]
Note that the duplicate "BMW" element is not added to the HashSet, since HashSet does not allow duplicate elements.