There are several ways to do this.
A possible one is to split the string in an array of chars:

String s = "AxVrsT";

void setup()
{
 char[] chars = s.toCharArray();
 for (int i = 0; i < chars.length; i++)
 {
   print(chars[i] + " / ");
 }
}

A possibly simpler way is to use s.charAt(i) to get each char.

PS.: that's not really an integration question...

Use PhiLho's tip and the switch method :

Quote:

O.k., i have followed the instructions offered by antiplastik and below is the code i have come up with.  The problem i am having is that the void draw command is only reading the first and last set of drawing commands, i am aware the void draw() will only update after it has finished reading the block but i need it to update the visual for every character it meets, does any kind wise programmer have any suggestions for what i should do with the attached code to make the image refresh for every character it reads, i presume an alternative structure will be required but anything i have tried thus far has failed to improve it. Please and thanks.

String s = "cab";


void setup(){
 size (300, 300); // size of sketch
 s = s.toLowerCase(); // change string to lower case
 frameRate(0); // framerate
}

void draw(){
 println(frameCount); // prints frame number at very start
 for (int i = 0; i < s.length(); i++) { // reads string and breaks it up into characters
 
 char ch = s.charAt(i); // position of each Character in the String
 switch(ch) {  // acknowledge the character instead of the char function

 case 'a':
 println("-> a");
 fill (240, 15, 15); // red
 rect (0,0, width, height);
 break;
 


 case 'b' :
 println("-> b");
 fill (82, 193, 35); // blue
 rect (0,0, width, height);
 break;


 case 'c' :
 println("-> c");
 fill (18, 59, 178); // green
 rect (0,0, width, height);
 break;
 
 }
 
 delay(2000); // slows programme here for two seconds
 frameCount ++; // starts next frame
 println(frameCount); // prints frame number between characters

 }
 
 noLoop();  
 println("--------------------> End");
}

Thanks a lot JohnG, totally sorted me out.