Today, additions and deletions to achieve an interactive java check and on the front end of the table.
There are two points worth noting
1, the conversion methods List
List <object> conversion to another type List is not a simple List <Other type> can be, need to add a List in the post.
Really strange, well, complain about, remember on the line.
2. The difference between == and equal
== is to compare address in java.
Content is equal objects.
ok. Start updating the knowledge database of tomorrow.