java - 检查用户是否仅在字符串中输入字母

我是Java新手，我想知道如何检查用户是否仅输入字母作为其姓名。如果还没有，请再次询问他们的名字。

System.out.print("Welcome - What is your family's surname? ");
familySurname = keyboard.nextLine();
while (familySurname.isEmpty())
{
    System.out.print("Invalid name - What is your family's surname? ");
    familySurname = keyboard.nextLine();
    if (familySurname.matches("[a-zA-Z]"))
    {
        System.out.println("Invalid Input.");
    }
}

这是我到目前为止的代码，但仍在接受数字。

最佳答案

您的循环条件应为：

 while (!familySurname.matches("[a-zA-Z]+")){
     System.out.print("Invalid name - What is your family's surname? ");
     familySurname = keyboard.nextLine();
 }

关于java - 检查用户是否仅在字符串中输入字母，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/20331373/