Object Dereferencing?

I posted this in the Java forum since it is Java code but i think have a better chance of getting this answered here.

The code below works great. But the code under it at compile time i get char cannot be derefrenced. what does that mean?

Code:

---

  try {
    StringBuffer sb = new StringBuffer();
      for(int i = 0; i < c.length; ++i){
          sb.append(c[i]);
            jta.setText(new String(sb));
            Thread.sleep(75);
      }
    }catch(Exception e){System.err.println(e);}

---

Code:

---

// cannot be derefrenced
  String s = new String(c);
    for(int i = 0; i < c.length; ++i){
        jta.setText(new String(s.charAt(i).toString()));
          Thread.sleep(75); 
    }

---

One question... what is c defined as?

c is defined as a char[] array.

f = new File("C:\\Java\\TTHelp.txt");
char[] c = new char[(int)f.length()];


I think the problem is that in the code below

Code:

---

// cannot be derefrenced
  String s = new String(c);
    for(int i = 0; i < c.length; ++i){
        jta.setText(new String(s.charAt(i).toString()));
          Thread.sleep(75); 
    }

---

I am creating a String Object from a char[] array. And somehow refering to the String is causing a problem. :p