java.lang.UnsupportedOperationException: The user must supply a JDBC connection

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The user must supply a JDBC connection
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The user must supply a JDBC connection
java.lang.UnsupportedOperationException: The user must supply a JDBC connection
at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:160)
at com.vaannila.student.Main.main(Main.java:15)

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