鍦↗ava涓紝鍙互浣跨敤Map鎺ュ彛鐨勫疄鐜扮被鏉ュ缓绔嬫槧灏勫叧绯汇€傚父鐢ㄧ殑Map瀹炵幇绫绘湁HashMap銆?code>TreeMap鍜?code>LinkedHashMap銆?/p>

浠ヤ笅鏄缓绔嬫槧灏勫叧绯荤殑涓€浜涘父瑙佹搷浣滐細

1. 鍒涘缓涓€涓?code>Map瀵硅薄锛?/li>

Map<String, Integer> map = new HashMap<>();

2. 娣诲姞閿€煎鍒版槧灏勪腑锛?/li>

map.put("key1", 1);
map.put("key2", 2);
map.put("key3", 3);

3. 浠庢槧灏勪腑鑾峰彇鍊硷細

int value1 = map.get("key1"); // 杩斿洖1

4. 妫€鏌ユ槧灏勪腑鏄惁鍖呭惈鏌愪釜閿細

boolean containsKey = map.containsKey("key1"); // 杩斿洖true

5. 妫€鏌ユ槧灏勪腑鏄惁鍖呭惈鏌愪釜鍊硷細

boolean containsValue = map.containsValue(1); // 杩斿洖true

6. 閬嶅巻鏄犲皠鐨勯敭鍊煎锛?/li>

for (Map.Entry<String, Integer> entry : map.entrySet()) {
    String key = entry.getKey();
    Integer value = entry.getValue();
    System.out.println(key + " = " + value);
}

7. 鍒犻櫎鏄犲皠涓殑閿€煎锛?/li>

map.remove("key1");

璇锋敞鎰忥紝Map鎺ュ彛鍏佽閿拰鍊间负null锛屼絾HashMap鍜?code>TreeMap涓嶆敮鎸?code>null閿紝LinkedHashMap闄ゅ銆?/p>