import java.util.Scanner;
public class Main {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner scanner = new Scanner(System.in);
String url = scanner.next();
if(url.length()>255)
{
System.out.println("False");
System.exit(0);
}
String[] arr = url.split("[.]");
for(int i=0;i<arr.length;i++)
{
if(arr[i].length()>63||arr[i].length()==0)
{
System.out.println("False");
System.exit(0);
}
for(int j=0;j<arr[i].length();j++)
{
if ((arr[i].charAt(j) <= 'Z' && arr[i].charAt(j) >= 'A')
|| (arr[i].charAt(j) <= 'z' && arr[i].charAt(j) >= 'a')
|| (arr[i].charAt(j) <= '9' && arr[i].charAt(j) >= '0')
|| (arr[i].charAt(j) == '-'))
{
}
else
{
System.out.println("False");
System.exit(0);
}
}
}
if((url.charAt(0) <= 'Z' && url.charAt(0) >= 'A')
|| (url.charAt(0) <= 'z' && url.charAt(0) >= 'a'))
{
}
else
{
System.out.println("False");
System.exit(0);
}
if ((url.charAt(url.length()-1) <= 'Z' && url.charAt(url.length()-1) >= 'A')
|| (url.charAt(url.length()-1) <= 'z' && url.charAt(url.length()-1) >= 'a')
|| (url.charAt(url.length()-1) <= '9' && url.charAt(url.length()-1) >= '0'))
{
}
else
{
System.out.println("False");
System.exit(0);
}
System.out.println("True");
}
}
域名合法判断
最新推荐文章于 2025-05-27 19:23:39 发布