鍦↗ava涓紝Map鏄竴绉嶉敭鍊煎鐨勯泦鍚堬紝瀹冩彁渚涗簡涓€绉嶅皢閿槧灏勫埌鍊肩殑鏂瑰紡銆侻ap鎺ュ彛鏄疛ava闆嗗悎妗嗘灦涓殑涓€閮ㄥ垎锛屽畠鏈夊涓疄鐜扮被锛屼緥濡侶ashMap, LinkedHashMap, TreeMap绛夈€?/p>

涓嬮潰鏄娇鐢∕ap闆嗗悎鐨勪竴浜涘父瑙佹搷浣滐細

1. 鍒涘缓Map瀵硅薄锛?/li>

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

2. 娣诲姞閿€煎锛?/li>

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

3. 鑾峰彇鍊硷細

int value = map.get("key1"); // 鑾峰彇閿负"key1"鐨勫€?

4. 鍒ゆ柇鏄惁鍖呭惈鏌愪釜閿垨鍊硷細

boolean containsKey = map.containsKey("key1"); // 鍒ゆ柇鏄惁鍖呭惈閿?quot;key1"
boolean containsValue = map.containsValue(1); // 鍒ゆ柇鏄惁鍖呭惈鍊?

5. 鍒犻櫎閿€煎锛?/li>

map.remove("key1"); // 鍒犻櫎閿负"key1"鐨勯敭鍊煎

6. 閬嶅巻Map锛?/li>

// 閬嶅巻閿泦鍚?for (String key : map.keySet()) {
int value = map.get(key);
System.out.println(key + ": " + value);
}
// 閬嶅巻鍊奸泦鍚?for (int value : map.values()) {
System.out.println(value);
}
// 閬嶅巻閿€煎闆嗗悎
for (Map.Entry<String, Integer> entry : map.entrySet()) {
String key = entry.getKey();
int value = entry.getValue();
System.out.println(key + ": " + value);
}

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