Close your Closeable JDBC resources. Both the JDBC Statement and Connection objects implement the Closeable interface, which means we should invoke the close() method on them when they are no longer ...

The Student Records Management System is a Java-based application that allows users to manage student data efficiently. It provides full CRUD (Create, Read, Update, Delete) operations to handle ...

at com.mysql.jdbc.ConnectionImpl.connectWithRetries (ConnectionImpl.java:2085) ... 93 common frames omitted Caused by: java.net.ConnectException: 拒绝连接 (Connection refused) at ...