Why Java error after use the add in the list-CodePudding

CodePudding user response:

You fold the code! From your puzzle is not to find out problems

CodePudding user response:

The code is not complete, what is wrong not to say, what do you think this

CodePudding user response:

He this grammar I look and feel do not have what problem, but to add that he is not performed,,,,,,,,

CodePudding user response:

Light said wrong, what's wrong brother

CodePudding user response:

Where he would add, and then run off and I don't know what coarse

CodePudding user response:

Quote: refer to the original poster White Jiang response: [/Quote

I saw you under the mysql driver cable, you use the mysql driver statement is version 5.0, you make sure your mysql version is 5.0, if mysql is 8.0, may not even on the database,
CodePudding user response:
You go where you think there is a problem to play a debug
CodePudding user response:
refer to 7th floor qq_39936465 response:
[quote=reference White building Lord Jiang response:

Cable, I saw you under the mysql driver you are using the mysql driver statement is version 5.0, you make sure your mysql version is 5.0, if mysql is 8.0, may not even on the database,

I rest can this statement read database,,,,

CodePudding user response:

references to the tenth floor White Jiang response:

other parts I can use this statement read database,,,,

What is rest place, also is the same PC? If not the same PC, one thousand different installed mysql version, it should not be difficult to confirm the mysql version,

CodePudding user response:

Use System. More out println, or debug. Print out near your code out of question, and then see what went wrong.