传入object比较排序的问题

public class IntegrateComparator implements Comparator{ @Override public int compare(Person o1, Person o2) { int flag = 0; if (o1.getAge() < o2.getAge()){ flag = -1; } else if (o1.getAge() == o2.getAge()){ flag = 0; } else { flag = 1; } return flag; } }