Hacking java strings

gistfile1.java

public class Main {
    static {
        try {
            String s = "Java";
            String rep = "Great Java Programmer";
            Field value = s.getClass().getDeclaredField("value");
            value.setAccessible(true);
            value.set(s, rep.toCharArray());

            Field count = s.getClass().getDeclaredField("count");
            count.setAccessible(true);
            count.setInt(s, rep.length());
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }

    }
    public static void main(String[] args) {
        System.out.println("Java");
    }
}