Fascinating Number in Java

import java.util.*;  
public class FascinatingNumberExample1  
{  
public static void main(String args[])  
{  
int num, n2, n3;      
Scanner sc=new Scanner(System.in);  
System.out.print("Enter any Number: ");  
num = sc.nextInt();  
n2 = num * 2;  
n3 = num * 3;  
//concatenating num, n2, and n3  
String concatstr = num + "" + n2 + n3;  
boolean found = true;  
//checks all digits from 1 to 9 are present or not  
for(char c = '1'; c <= '9'; c++)  
{  
int count = 0;  
//loop counts the frequency of each digit  
for(int i = 0; i < concatstr.length(); i++)  
{  
char ch = concatstr.charAt(i);  
//compares the character of concatstr with i  
if(ch == c)  
//incerments the count by 1 if the specified condition returns true  
count++;  
}  
//returns true if any of the condition returns true  
if(count > 1 || count == 0)  
{  
found = false;  
break;  
}  
}  
if(found)  
System.out.println(num + " is a fascinating number.");  
else  
System.out.println(num + " is not a fascinating number.");  
}  
}  

Output :

Enter any Number: 327
327 is a fascinating number.