如何检查字符串在ArrayList中是否已经存在？

import java.util.ArrayList;

public class CheckStringInArrayList {
    public static void main(String[] args) {
        ArrayList<String> arrayList = new ArrayList<>();
        arrayList.add("Apple");
        arrayList.add("Banana");
        arrayList.add("Orange");

        String searchString = "Banana";

        if (arrayList.contains(searchString)) {
            System.out.println("字符串已经存在于ArrayList中");
        } else {
            System.out.println("字符串不存在于ArrayList中");
        }
    }
}