![android正则表达式隐藏邮箱地址中间字符 android正则表达式隐藏邮箱地址中间字符](https://image.shishitao.com:8440/aHR0cHM6Ly9ia3FzaW1nLmlrYWZhbi5jb20vdXBsb2FkL2NoYXRncHQtcy5wbmc%2FIQ%3D%3D.png?!?w=700&webp=1)
// String emailStr = email.substring(0, email.lastIndexOf("@"));
// if (emailStr.length() < 2) {//0位、1位
//// String string=email.replaceAll("(\\w?)(\\w)(@\\w+\\.[a-z]+(\\.[a-z]+)?)", "*$3");
// return string;
// } else if (2 <= emailStr.length() && emailStr.length() < 3) {//2位
//// return email.replaceAll("(\\w?)(\\w+)(\\w)(@\\w+\\.[a-z]+(\\.[a-z]+)?)", "$1*$3$4");
// } else {//3位以上
//// return email.replaceAll("(\\w?)(\\w+)(\\w)(@\\w+\\.[a-z]+(\\.[a-z]+)?)", "$1*$3$4");
// }