W3School TIY Editor

import java.util.regex.Matcher;

import java.util.regex.Pattern;

​

public class Main {

  public static void main(String[] args) {

    Pattern pattern = Pattern.compile("w3school", Pattern.CASE_INSENSITIVE);

    Matcher matcher = pattern.matcher("访问 W3School!");

    boolean matchFound = matcher.find();

    if(matchFound) {

      System.out.println("匹配成功");

    } else {

      System.out.println("匹配失败");

    }

  }

}