CodePudding user response:

Closeall 50 lines of the if (rs!=null) ; //the last lines of multiple semicolons, rs. So the close () is unconditional implementation, and exectuIUD 49 line travels just parameter is null, so the null pointer
The 50 rows closeall last a semicolon,

CodePudding user response:

Not 50 lines, line is 48

CodePudding user response:

Is drop behind ah if there is no semicolon, are now popular so write? If not and {} - -

CodePudding user response:

Suggest you later still specification under their own writing, while behind the if not add {} is convenient, but this kind of writing with more before without certain base will be easy to give yourself another project,