Java Program To Check For Unique Number

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import java.io.*;

public class JavaUniqueNumber {

	public static void main(String args[]) throws IOException {
		BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
		System.out.print("Enter any number : ");
		int n = Integer.parseInt(bufferedReader.readLine());

		String s = Integer.toString(n);
		int l = s.length();
		int flag = 0;

		for (int i = 0; i < l - 1; i++) {
			for (int j = i + 1; j < l; j++) {
				if (s.charAt(i) == s.charAt(j)) {
					flag = 1;
					break;
				}
			}
		}

		if (flag == 0)
			System.out.println("**** The Number is a Unique Number ****");
		else
			System.out.println("**** The Number is Not a Unique Number ****");
	}
}
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