从表中提取所有键和值​

# 示例字典
my_dict = {'name': 'Alice', 'age': 30, 'city': 'New York'}

# 提取所有的键和值
for key, value in my_dict.items():
    print(f"Key: {key}, Value: {value}")

// 示例对象
const myObj = {name: 'Alice', age: 30, city: 'New York'};

// 使用 for...in 循环
for (const key in myObj) {
    if (myObj.hasOwnProperty(key)) {
        console.log(`Key: ${key}, Value: ${myObj[key]}`);
    }
}

// 或者使用 Object.entries()
Object.entries(myObj).forEach(([key, value]) => {
    console.log(`Key: ${key}, Value: ${value}`);
});

import java.util.HashMap;
import java.util.Map;

public class Main {
    public static void main(String[] args) {
        // 示例 HashMap
        Map<String, Object> myMap = new HashMap<>();
        myMap.put("name", "Alice");
        myMap.put("age", 30);
        myMap.put("city", "New York");

        // 提取所有的键和值
        for (Map.Entry<String, Object> entry : myMap.entrySet()) {
            System.out.println("Key: " + entry.getKey() + ", Value: " + entry.getValue());
        }
    }
}