题解 | #判断是不是字母
判断是不是字母
https://www.nowcoder.com/practice/91a588dd4cd244bfa616f17603ec123c
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
while(sc.hasNext()){//判断是否读完
char c=sc.next().charAt(0);//转化为char类型一个符号，从0开始数
if(Character.isLetter(c))
{
System.out.println(c+" is an alphabet.");
}else{
System.out.println(c+" is not an alphabet.");
}
}
}
}
System.out.println(Character.isLetter('A'));//Character.isLetter 判断是否为字母包括大小写，是为true，否为false
System.out.println(Character.isLetter('5'));