1# Common Library Subsystem Changelog 2 3## cl.commonlibrary.1 Error Code and Information Change 4The error codes and information returned by APIs of the **ArrayList**, **List**, **LinkedList**, **Stack**, **Queue**, **Deque**, **PlainArray**, **LightWeightMap**, **LightWeightSet**, **HashMap**, **HashSet**, **TreeMap**, and **TreeSet** classes are changed. 5 6For details about the changed error codes, see [Utils Error Codes](../../../application-dev/reference/errorcodes/errorcode-utils.md). 7 8No adaptation is required for applications developed using these APIs. 9 10**Key API/Component Changes** 11Error code information is redefined for APIs in these classes and marked using **'@throws'** in the *.d.ts file of the corresponding module. 12The sample code is as follows: 13**ArrayList** class before the change: 14constructor(); 15**ArrayList** class after the change: 16@throws { BusinessError } 10200012 - The ArrayList's constructor cannot be directly invoked. 17constructor(); 18 19**Change Impact** 20 21No impact. 22