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馃О 鍩虹宸ュ叿绠憋細new鍏抽敭瀛楃殑姝ｇ‘鎵撳紑鏂瑰紡

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java澶嶅埗
// 閿欒绀鸿寖锛佺┖鎸囬拡璀﹀憡锛?/span>
Cat myCat;
myCat.meow();

// 姝ｇ‘濮垮娍鉁?/span>
Cat myCat = new Cat();
myCat.meow();

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鍒嗘鎷嗚В閫犲璞℃祦绋嬶紙闄勯伩鍧戞寚鍗楋級

1. 鈥?strong>鈥嬪０鏄庡璞″彉閲忊€?/strong>鈥?鈫?Cat myCat;锛堢浉褰撲簬棰勫畾鐚獫锛?/li>
2. 鈥?strong>鈥嬬湡路閫犵尗鐜板満鈥?/strong>鈥?鈫?new Cat();锛堜粠瀛楄妭鐮侀噷鍙敜瀹炰綋鐚級
3. 鈥?strong>鈥嬪缓绔嬭繛鎺モ€?/strong>鈥?鈫?鐢ㄧ瓑鍙锋妸鐚獫鍜屽疄浣撶尗缁戝畾

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馃毀 鏂版墜蹇呰俯鐨勪簲澶ф繁鍧戯紙闄勮嚜鏁戞寚鍗楋級

鏍规嵁GitHub鏂版墜椤圭洰缁熻锛岃繖浜涢敊璇巼鏈€楂橈細

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鍋囪鎴戜滑瑕佸仛涓櫥褰曞姛鑳斤細

java澶嶅埗
// UserService.java
public class UserService {
    public boolean login(String username, String password){
        // 杩欓噷鍋囪鏈夋暟鎹簱鏍￠獙
        return "admin123".equals(password);
    }
}

// Main.java
public class Main {
    public static void main(String[] args) {
        UserService service = new UserService();  // 閲嶇偣鍦ㄨ繖閲岋紒
        if(service.login("admin", "admin123")){
            System.out.println("馃帀 鐧诲綍鎴愬姛锛?);
        } else {
            System.out.println("馃挜 瀵嗙爜閿欒");
        }
    }
}

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馃 楂橀樁鎬濊€冿細浠€涔堟椂鍊欎笉璇ョ敤new锛?/h3>

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馃挕 浜斿勾鑰佸徃鏈虹殑蹇犲憡

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