zvozin

public static <T> List<String> toString(List<T> aListOfTs) {
    List<String> toPrint = new ArrayList<String>();
    for (T aT : aListOfTs) {
        toPrint.add(aT.toString());
    }
    return toPrint;
}

zvozin

public static <T> Collection<T> toStringFiltered(List<T> aListOfTs) {
    return Collections2.filter(aListOfTs, new Predicate<T>()
    {
        public boolean apply(T from) {
            return from.toString().isEmpty();
        }
    });
}

zvozin

public static <T> List<String> toString(List<T> aListOfTs) {
    List<String> toPrint = new ArrayList<String>();
    for (T aT : aListOfTs) {
        toPrint.add(aT.toString());
    }
    return toPrint;
}