java实现List转换为Vector的方法总结

import java.util.*;

List<String> list = new ArrayList<>();
list.add("A");
list.add("B");
list.add("C");

// 使用Vector的构造函数直接转换
Vector<String> vector = new Vector<>(list);
System.out.println(vector); // 输出: [A, B, C]

import java.util.*;

List<String> list = Arrays.asList("A", "B", "C");
Vector<String> vector = new Vector<>();

// 使用addAll方法添加所有元素
vector.addAll(list);
System.out.println(vector); // 输出: [A, B, C]

import java.util.*;

List<String> list = new ArrayList<>();
list.add("A");
list.add("B");
list.add("C");

Vector<String> vector = new Vector<>();
for (String item : list) {
    vector.add(item);
}
System.out.println(vector); // 输出: [A, B, C]

import java.util.*;
import java.util.stream.Collectors;

List<String> list = Arrays.asList("A", "B", "C");

Vector<String> vector = list.stream()
                           .collect(Collectors.toCollection(Vector::new));
System.out.println(vector); // 输出: [A, B, C]

import java.util.*;

public class ListToVectorExample {
    public static void main(String[] args) {
        // 创建List
        List<String> originalList = new ArrayList<>();
        originalList.add("Apple");
        originalList.add("Banana");
        originalList.add("Orange");
        
        System.out.println("原始List: " + originalList);
        
        // 方法1：使用构造函数
        Vector<String> vector1 = new Vector<>(originalList);
        System.out.println("方法1结果: " + vector1);
        
        // 方法2：使用addAll
        Vector<String> vector2 = new Vector<>();
        vector2.addAll(originalList);
        System.out.println("方法2结果: " + vector2);
        
        // 验证转换结果
        System.out.println("转换后大小: " + vector1.size());
        System.out.println("包含Banana: " + vector1.contains("Banana"));
    }
}

List<Person> personList = new ArrayList<>();
personList.add(new Person("Alice"));
personList.add(new Person("Bob"));

Vector<Person> personVector = new Vector<>(personList);