08 2023 档案

摘要：代理类相当于古代的摄政王！ //接口public interface Subject { void request(); } // 被代理的类public class RealSubject implements Subject{ @Override public void request() { 阅读全文

摘要：public static String extractSubstring(String input, String pattern) { Pattern regexPattern = Pattern.compile(pattern); Matcher matcher = regexPattern. 阅读全文