public class Main { public static void main(String args[]) { char ch='4'; if(ch>='0' && ch<='0') { System.out.println("Number"); } else { System.out.println("Not a Number"); } } }
Number
public class Main { public static void main(String args[]) { char ch; ch=args[0].charAt(0); if(ch>='0' && ch<='9') { System.out.println("Number"); } else { System.out.println("Not a Number"); } } }
Number
import java.util.*; public class Main { public static void main(String args[]) { char ch; Scanner s=new Scanner(System.in); System.out.println("Enter Number"); ch=s.next().charAt(0); if(ch>='0' && ch<='9') { System.out.println("Number"); } else { System.out.println("Not a Number"); } } }
Enter Number
4
Number