如何在java中返回过滤后的Hashmap的值？

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

public class HashMapFilter {
    public static void main(String[] args) {
        // 创建原始的HashMap
        Map<String, Integer> originalMap = new HashMap<>();
        originalMap.put("A", 1);
        originalMap.put("B", 2);
        originalMap.put("C", 3);
        originalMap.put("D", 4);

        // 过滤条件：只保留值大于2的键值对
        Map<String, Integer> filteredMap = filterHashMap(originalMap, 2);

        // 输出过滤后的结果
        for (Map.Entry<String, Integer> entry : filteredMap.entrySet()) {
            System.out.println(entry.getKey() + ": " + entry.getValue());
        }
    }

    public static Map<String, Integer> filterHashMap(Map<String, Integer> originalMap, int filterValue) {
        Map<String, Integer> filteredMap = new HashMap<>();
        for (Map.Entry<String, Integer> entry : originalMap.entrySet()) {
            if (entry.getValue() > filterValue) {
                filteredMap.put(entry.getKey(), entry.getValue());
            }
        }
        return filteredMap;
    }
}