Java正则表达式验证至少6位表达式中至少包含数字大小写字母中的一种

直接上代码

public class TestRegex {

    public static void main(String[] args){


        String a = "^(?!^$)([a-zA-Z0-9]{6,})$";
        Pattern pattern2 = Pattern.compile(a);
        System.out.println("1111111："+pattern2.matcher("1111111").matches());

        System.out.println("aaaaaaa："+pattern2.matcher("aaaaaaa").matches());

        System.out.println("AAAAAAA："+pattern2.matcher("AAAAAAA").matches());

        System.out.println("1111AAA："+pattern2.matcher("1111AAA").matches());

        System.out.println("1111aaq："+pattern2.matcher("1111aaq").matches());

        System.out.println("1111Aaq："+pattern2.matcher("1111Aaq").matches());

        System.out.println("1111Aa!："+pattern2.matcher("1111Aa!").matches());

    }
}

执行结果