import java.util.Scanner;
public class StrinExp {
public static void main(String args[]) {
Scanner scanner = new Scanner(System.in);
int i = 0;
String a = null;
System.out.println("Enter username");
i=scanner.nextInt();
a=a.valueOf(i);
System.out.print(a);
}
}
But m getting error when i am giving a alphanumeric value..
ex: Manish0818
and even when i am giving same value as string, still facing the same problem.
Help
change your input statement.
String a = null;
System.out.println("Enter username");
a = scanner.next();
System.out.println(a);
If there's an alphanumeric, then take it in as a string, not as an integer. You will land in an InputMismatchException
if you do so. It means that you're trying to take an integer but you are entering a string which differ in data types.
and if you wish to remove all junk characters except alphanumeric then you can try
a = a.replaceAll("[^a-zA-Z0-9]+", "");
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.