Java从数组列表中每隔一次获取一次元素，并将其用作散列映射的值

import java.util.ArrayList;
import java.util.HashMap;

ArrayList<String> arrayList = new ArrayList<>();
arrayList.add("元素1");
arrayList.add("元素2");
arrayList.add("元素3");
arrayList.add("元素4");
arrayList.add("元素5");

HashMap<String, String> hashMap = new HashMap<>();

for (int i = 0; i < arrayList.size(); i += 2) {
    String key = "键" + i;
    String value = arrayList.get(i);
    hashMap.put(key, value);
}

for (String key : hashMap.keySet()) {
    String value = hashMap.get(key);
    System.out.println("键：" + key + "，值：" + value);
}