Thread: Error with binary operand.

The error for the following code is:

StringCharacter.java:13: error: bad operand types for binary operator '!='
         if(st.charAt(i) != " ")
                         ^
  first type:  char
  second type: String
1 error

// program to demonstrate String class
public class StringCharacter{
 
   public static void main(String args[]){
 
      String st = "This is my first program.";
      int count = 0;
      int length = st.length(); // returns length of string 
 
      // increment count for each character excluding spaces
      for(int i = 0; i < length; i++){
         if(st.charAt(i) != " ")
         count++;
 
      }
      System.out.println("The number of characters in this string is: " + count);
   }
}