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Experiencing Some difficulties with Hibernate

 
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Hello everyone,

I am able to successfully create and insert entries in a table via Hibernate, however for some reason I am unable to update records within my database created by Hibernate. I created an individual method for update and delete as seen below (NOTE: I have also included the POJO class I created):



As aforementioned, the table is successfully created in a MySQL database. However, I am unable to update an objects Marks (grade) via my HQL query:



The purpose of the update method is to effectively take one of the records in the table via the id column and updates the element in the marks column.
 
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