public final class HasLength implements Precondition {

	Precondition prec;

	public HasLength() {
	}

	public HasLength(final Precondition prec) {
		this.prec = prec;
	}

	@Override
	public boolean validate(final String str) {
		System.out.println("HasLength called.");
		if (!str.trim().isEmpty()) {
			System.out.println("HasLength returning true.");
			return true;
		}
		//return false;
		return prec == null ? false : this.prec.validate(str);
	}
}