Java后端，正则匹配

public static void main(String[] args) {
    /*String a = "12fga$";
    String b = "2g";
    System.out.println(a.contains(b));
    //字符串长度
    System.out.println(a.length());
    //英文字母正则
    String regex1 = ".*[a-zA-z].*";
    //是否含有英文
    boolean result3 = a.matches(regex1);
    System.out.println(result3);
    //是否含有数字
    String regex2 = ".*[0-9].*";
    boolean result4 = a.matches(regex2);
    System.out.println(result4);
    //是否含有特殊字符
    String regEx = "[ _`~!@#$%^&*()+=|{}':;',\\[\\].<>/?~！@#￥%……&*（）——+|{}【】‘；：”“’。，、？]|\n|\r|\t";
    Pattern p = Pattern.compile(regEx);
    boolean m = p.matcher(a).find();
    System.out.println(m);
    //仅仅包含字母和数字
    String regX3 = "^[a-z0-9A-Z]+$";
    //包含字母和数字
    String regX4 = ".*[a-z0-9A-Z].*";
    Boolean result5 = a.matches(regX3);
    System.out.println(result5);*/
    String acc = ThirdPartyLogin.loginConnect();
    System.out.println(acc);
    /*String str =UUID.randomUUID().toString().replace("-", "");
    System.out.println(str);*/
  }