在Java中分离List<String>

import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        List<String> list = new ArrayList<>();
        list.add("apple");
        list.add("banana");
        list.add("orange");

        String separator = ","; // 分隔符

        String result = separateList(list, separator);
        System.out.println(result);
    }

    public static String separateList(List<String> list, String separator) {
        StringBuilder sb = new StringBuilder();

        for (int i = 0; i < list.size(); i++) {
            sb.append(list.get(i));

            if (i != list.size() - 1) {
                sb.append(separator);
            }
        }

        return sb.toString();
    }
}