How can I solve this exception:
Exception in thread "main" java.lang.AbstractMethodError: com.mysql.jdbc.Connection.isValid(I)Z
at org.apache.commons.dbcp2.DelegatingConnection.isValid(DelegatingConnection.java:914)
...
I read that this error is something about libraries/ jdk but I can't find a good way to solve it. I need some help from you. Thank you!
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