배열안에 ArrayList 넣기

ArrayList<ST>[] list = new ArrayList[5];

ST s = new ST();
s.name = "홍길동";
s.age = 11;

list[0] = new ArrayList();

list[0].add(s);
System.out.println(list[0].get(0).name);    //홍길동

ST t = new ST();
t.name = "김철수";
t.age = 17;

list[0].add(1, t);
System.out.println(list[0].get(1).name);    //김철수