java 将list按指定大小等分，最后多余的单独一份

//将list按blockSize大小等分，最后多余的单独一份
public static <T> List<List<T>> subList(List<T> list, int blockSize) {
List<List<T>> lists = new ArrayList<List<T>>();
if (list != null && blockSize > 0) {
int listSize = list.size();
if(listSize<=blockSize){
lists.add(list);
return lists;
}
int batchSize = listSize / blockSize;
int remain = listSize % blockSize;
for (int i = 0; i < batchSize; i++) {
int fromIndex = i * blockSize;
int toIndex = fromIndex + blockSize;
System.out.println("fromIndex=" + fromIndex + ", toIndex=" + toIndex);
lists.add(list.subList(fromIndex, toIndex));
}
if(remain>0){
System.out.println("fromIndex=" + (listSize-remain) + ", toIndex=" + (listSize));
lists.add(list.subList(listSize-remain, listSize));
}
}
return lists;
}