ReverseNumber.java

import java.util.Scanner;

public class ReverseNumber {
	public static void main(String[] args) {
		
		long num,n;
/*		long temp = 0; */
		String output = "";
		
		System.out.println("Program to reverse an integer entered by user using while loop.\n---");
		Scanner sm = new Scanner(System.in);
		
		System.out.print("Enter the number: ");
		num = sm.nextInt();
		n=num;

/*		while(n>0) {
			temp=temp*10+n%10;
			n=n/10;
		}
*/		// You can also use the above method but if you enter 200 it will return 2
		
		while(n>0) {
			output= output+ ""+n%10;
			n=n/10;
		}
		//The above method will append the variable in String; if you enter 200 it will return 002
		
/*		System.out.println("The reverse of "+num+" is "+temp); */
		System.out.println("The reverse of "+num+" is "+output);
		
		sm.close();
		System.out.println("---\nThe Program has ended,");
	}
}