RadixFind.java

import java.util.*;
public class RadixFind
{
    public static void main(String args[])
    {
        try (Scanner sc = new Scanner(System.in)) {
            String num;
            System.out.println("Enter a Number");
            num=sc.nextLine();

            if(num.matches("[01]+"))
            {
                System.out.println("Binary radix= 2");
            }
            else if(num.matches("[0-7]+"))
            {
                System.out.println("Octal Radix=8");
            }
            else if(num.matches("[0-9]+"))
            {
                System.out.println("Decimal Radix =10");
            }
            else if(num.matches("[0-9A-F]+"))
            {
                System.out.println("Hexa radix= 16");
            }
            else
            {
                System.out.println("INVALID");
            }
        }

        
        

    }
}