Bug for the below code

[hrikroy201001001129_f42fcea8aec035de]

import java.util.*;
public class Main {
public static void main(String args[]) {
Scanner sc=new Scanner(System.in);
char ch=(char)sc.next().charAt(0);
if(ch>=‘A’&&ch<=‘Z’)
System.out.print(‘U’);
else if(ch>=‘a’&&ch<=‘z’)
System.out.print(‘L’);
else
System.out.print(‘l’);
}
}
Can you pls find the bug?