bloodbankmanagement | Blood Bank Management System || Python Django
kandi X-RAY | bloodbankmanagement Summary
kandi X-RAY | bloodbankmanagement Summary
Blood Bank Management System || Python Django
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QUESTION
Here is the username which is defined as Edittext I want to check when user entered the username and move to the next field ,but it generates Error
...E/MessageQueue-JNI: java.lang.NullPointerException: Attempt to invoke interface method 'java.sql.Statement java.sql.Connection.createStatement()' on a null object reference
ANSWER
Answered 2022-Mar-10 at 07:11From the error message, I can see you are trying to execute creteStatement()
on the con
variable but that is null at that point. Can't see any other code to give any other advice.
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