apache分割数组和集合的分法

public static void main(String[] agrs){

String[] array={"1","2","","3"};

System.out.println(org.apache.commons.lang.StringUtils.join(array,"|"));

List list = new ArrayList<String>();

list.add("1");

list.add("2");

list.add("");

list.add("3");

System.out.println(org.apache.commons.lang.StringUtils.join(list.toArray(),"|"));