代码:
String regex = "^(?!([a-zA-Z]+|\\d+)$)[a-zA-Z\\d]{6,20}$";
String a = "a11111111a";
boolean matches = a.matches(regex);
System.out.println(matches);
代码:
String regex = "^(?!([a-zA-Z]+|\\d+)$)[a-zA-Z\\d]{6,20}$";
String a = "a11111111a";
boolean matches = a.matches(regex);
System.out.println(matches);