鍦?Java 涓紝find 鏂规硶閫氬父鐢ㄤ簬鍦ㄥ瓧绗︿覆涓煡鎵剧壒瀹氱殑瀛愬瓧绗︿覆鎴栨鍒欒〃杈惧紡锛屽苟杩斿洖鍖归厤鐨勭粨鏋溿€?code>find 鏂规硶閫氬父鏄湪 Matcher 瀵硅薄鎴?Pattern 瀵硅薄涓婅皟鐢ㄧ殑銆?/p>

涓嬮潰鏄竴涓畝鍗曠殑绀轰緥锛屾紨绀哄浣曚娇鐢?find 鏂规硶鏌ユ壘瀛楃涓蹭腑鐨勭壒瀹氬瓙瀛楃涓诧細

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    public static void main(String[] args) {
        String text = "Hello, world!";
        Pattern pattern = Pattern.compile("world");
        Matcher matcher = pattern.matcher(text);
        
        if (matcher.find()) {
            System.out.println("Found match at index " + matcher.start());
        } else {
            System.out.println("No match found");
        }
    }
}

鍦ㄨ繖涓ず渚嬩腑锛屾垜浠鍏堝垱寤轰簡涓€涓?Pattern 瀵硅薄锛岀敤浜庤〃绀鸿鏌ユ壘鐨勫瓙瀛楃涓?鈥渨orld鈥濄€傜劧鍚庢垜浠娇鐢?matcher 瀵硅薄鍦ㄥ瓧绗︿覆 text 涓煡鎵惧尮閰嶇殑瀛愬瓧绗︿覆锛屽苟浣跨敤 find 鏂规硶鏉ュ垽鏂槸鍚︽壘鍒颁簡鍖归厤銆傚鏋滄壘鍒颁簡鍖归厤锛屾垜浠€氳繃 matcher.start() 鏂规硶鑾峰彇鍖归厤鐨勮捣濮嬬储寮曘€?/p>

闄や簡绠€鍗曠殑瀛愬瓧绗︿覆鍖归厤锛?code>Pattern 瀵硅薄杩樺彲浠ョ敤浜庣紪璇戞鍒欒〃杈惧紡锛屼互杩涜鏇村鏉傜殑瀛楃涓插尮閰嶃€傞€氳繃鍦?Pattern 瀵硅薄鐨?compile 鏂规硶涓紶鍏ユ鍒欒〃杈惧紡锛岀劧鍚庡湪 Matcher 瀵硅薄涓婅皟鐢?find 鏂规硶锛屽彲浠ュ疄鐜板鐗瑰畾妯″紡鐨勫瓧绗︿覆鍖归厤銆?/p>

甯屾湜杩欎釜渚嬪瓙鍙互甯姪鎮ㄤ簡瑙ｅ浣曞湪 Java 涓娇鐢?find 鏂规硶銆?/p>