E2 Java full stack

//Check given value is Alphabet or digit or special character
import java.util.Scanner;
class GivenStringAlphbetOrChar
{
public static void main(String[] args)
{
Scanner scan = new Scanner(System.in);
System.out.println("Enter the Character");
char ch = scan.next().charAt(0);
if (ch>='a'&& ch ='A' && ch ='0' && ch

Swap two numbers without any temp variable

10 number factorial in —java