ascii2native

public static String ascii2native(String ascii) {  
    int n = ascii.length() / 6;  
    StringBuilder sb = new StringBuilder(n);  
    for (int i = 0, j = 2; i < n; i++, j += 6) {  
        String code = ascii.substring(j, j + 4);  
        char ch = (char) Integer.parseInt(code, 16);  
        sb.append(ch);  
    }  
    return sb.toString();  
}