/**
 * 常用工具类
 * @author hetiewei(贺铁伟)
 *
 */
public class JayCommonUtil {


/**
* 按指定大小，分隔集合，将集合按规定个数分为n个部分
* 
* @param list
* @param len
* @return
*/
public static List<List<?>> splitList(List<?> list, int len) {
if (list == null || list.size() == 0 || len < 1) {
return null;
}

List<List<?>> result = new ArrayList<List<?>>();


int size = list.size();
int count = (size + len - 1) / len;


for (int i = 0; i < count; i++) {
List<?> subList = list.subList(i * len, ((i + 1) * len > size ? size : len * (i + 1)));
result.add(subList);
}
return result;
}

}