使用来自另一个ArrayList的map实例化ArrayList

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

public class ArrayListMappingExample {
    public static void main(String[] args) {
        List<Integer> originalList = new ArrayList<>();
        originalList.add(1);
        originalList.add(2);
        originalList.add(3);

        List<String> mappedList = new ArrayList<>();
        for (Integer num : originalList) {
            String mappedValue = String.valueOf(num * 2); // 这里将原始数据乘以2进行映射
            mappedList.add(mappedValue);
        }

        System.out.println("原始ArrayList：" + originalList);
        System.out.println("映射后的ArrayList：" + mappedList);
    }
}

原始ArrayList：[1, 2, 3]
映射后的ArrayList：[2, 4, 6]