connectcxion problems with the jdbc

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a project of mysql 5.7 was carried out, the update was made to 8.1 but at the time of the update, the jdbc did not work anymore and it continues to mark the same error as this ! [ ] 1

mysql java

asked by Carlos Olea 27.12.2018 в 20:23

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SQL query of all the questions except that the column "correct answers" of the other table is equal to 4 localhost: 8080 does not work