java如何根据@字符截取,并获取@前面的字符串
使用substring进行截取,获取@字符的索引值,截取0到@的索引值。即可获取@前面的字符串
public class Test {
public static void main(String[] args) {
String email = "[email protected]";
System.out.println(email);
//indexOf("@")----获取@字符索引值
String emailPrefix = email.substring(0, email.indexOf("@"));
System.out.println(emailPrefix);
}
}
打印结果: