java 去除分号隔开的相同的字符串 --by wall

//去除分号隔开的相同的字符串 --by wall
	public static String validateData(String str){
		String [] as = str.split(";");
		String FilalStr = "";
		Set<String> set = new HashSet<String>();
		for (int i = 0; i < as.length; i++) {
			set.add(as[i]);
		}
		Iterator<String> ite = set.iterator();
		while (ite.hasNext()) {
			FilalStr += ite.next().toString()+";";	
		}

		return FilalStr;
	}