Boolean, comparing user string & user char

Question

I'm missing something. i'm trying to compare a string, from user input, to a char, from user input. Ex. string, char: "sssss" "s". Solving for does string "sssss" contain only char "s" ? In this case, should return true. In "ssss sd" "s" SOP should retun false false. I'm having trouble writing code so that string "s", however many, = char "s". Probably confusing, I'm sorry. Here's what I have:
//     StringInput.java          
public class StringInput
     public static void main(String[] args)
     String s = args[0];          //get the String from the user
     char c = args[1].charAt(0);     //get the char from the user
     int i = 0;
     boolean answer = true;{
     while (answer && (i < s.length () - 1)) {
//char c = s.charAt (i);
     //if (! (((c >= '0') && (c <= s.length)) || (c == ' ')))
     answer = false; }}
     String trim = s.trim();
     s = trim;
     String replace = s.replace('a', 's');
     int length = s.length();
     System.out.println (trim);
     System.out.println (replace);
     System.out.println (length);
System.out.println("The String " + s + " is composed " + " entirely of the char " + c + ": " + answer);                          

Answer 1

This might work
class ScanInput
     public static void main(String[] args)
          String s = args[0]; //get the String from the user
          char c = args[1].charAt(0); //get the char from the user
          boolean answer = false;
          int i =0;
          while ( (! answer) && ( i < s.length( ) -  1 )  )
                    if ( c != s.charAt( i ) )
                              answer = true;
                    i++;
          if ( answer)
                    System.out.println(" The input string " + s + " contains other characters besides " + c );
          else
                    System.out.println(" The input string " + s + " contains only character " + c );
}