public class Main {
    	public static void main(String args[]) {
    		String str = "this is Scanftree;;
    		System.out.println(removeCharAt(str, 3));
    	}
    	public static String removeCharAt(String s, int pos) {
    		return s.substring(0, pos) + s.substring(pos + 1);
    	}
    }