Finding spaces in a string.

Question:

How do I find the index of all of the spaces in a string?

Answer:

You could convert the string to a char array and loop through it.

Code:

public class Spaces {
   public static void main(String[] args) {
      String str = "this is a string";
      System.out.println("String: " + str);
 
      char[] array = str.toCharArray();
 
      System.out.println("spaces at:");
      for(int x=0; x<array.length; x++){
         if(array[x] == ' '){
            System.out.println(x);
         }
      }
   }
}

Output:

$ java Spaces
String: this is a string
spaces at:
4
7
9