public static <T extends Comparable<T>> boolean compare(List<T> a, List<T> b) {
if(a.size() != b.size())
return false;
Collections.sort(a);
Collections.sort(b);
for(int i=0;i<a.size();i++){
if(!a.get(i).equals(b.get(i)))
return false;
}
return true;
}原文：http://www.cnblogs.com/hrhguanli/p/5081620.html