使用streams将对象列表转换为字符串列表

import java.util.List;
import java.util.stream.Collectors;

public class ObjectToString {
    public static void main(String[] args) {
        List<Person> personList = createPersonList();
        
        List<String> stringList = personList.stream()
                .map(Person::toString) // 使用方法引用将对象转换为字符串
                .collect(Collectors.toList());
        
        System.out.println(stringList);
    }
    
    private static List<Person> createPersonList() {
        // 创建一个对象列表
        List<Person> personList = List.of(
                new Person("John", 25),
                new Person("Alice", 30),
                new Person("Bob", 35)
        );
        
        return personList;
    }
    
    static class Person {
        private String name;
        private int age;
        
        public Person(String name, int age) {
            this.name = name;
            this.age = age;
        }
        
        @Override
        public String toString() {
            return "Person{name='" + name + "', age=" + age + "}";
        }
    }
}

[Person{name='John', age=25}, Person{name='Alice', age=30}, Person{name='Bob', age=35}]