Is it a legal statement: for (String s = ""; s.length()<10; s += "A") : Questions « Statements « SCJP

1. SCJP
2. Statements
3. Questions

public class MainClass {
  public static void main(String[] argv) {
    for (String s = ""; s.length() < 10; s += "A") {
      System.out.println();
    }

  }
}

A. Legal
B. Illegal