在Java中迭代2个地图

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

public class MapIterationExample {
    public static void main(String[] args) {
        // 创建两个地图
        Map<String, Integer> map1 = new HashMap<>();
        map1.put("A", 1);
        map1.put("B", 2);
        map1.put("C", 3);

        Map<String, Integer> map2 = new HashMap<>();
        map2.put("X", 10);
        map2.put("Y", 20);
        map2.put("Z", 30);

        // 使用循环结构迭代第一个地图
        System.out.println("迭代第一个地图：");
        for (Map.Entry<String, Integer> entry : map1.entrySet()) {
            String key = entry.getKey();
            Integer value = entry.getValue();
            System.out.println("Key: " + key + ", Value: " + value);
        }

        // 使用迭代器迭代第二个地图
        System.out.println("迭代第二个地图：");
        Iterator<Map.Entry<String, Integer>> iterator = map2.entrySet().iterator();
        while (iterator.hasNext()) {
            Map.Entry<String, Integer> entry = iterator.next();
            String key = entry.getKey();
            Integer value = entry.getValue();
            System.out.println("Key: " + key + ", Value: " + value);
        }
    }
}