Java Database Connectivity (JDBC) In‑Depth + Practice Tests

Learn how to establish a JDBC connection to a MySQL database using the driver manager, with a properties file, and a centralized utility to obtain connections.

Learn to execute DML commands in JDBC by creating a statement and sending SQL strings; use execute update for insert, delete, and update, and execute query with results for retrieval.

Execute select queries with JDBC and retrieve data from a ResultSet. Explore ResultSet metadata, including column names, types, and class names, and navigate rows with next().

Learn how prepared statements in JDBC enable plan reuse, improve performance, and prevent SQL injection by binding values with placeholders and setting parameters before execution.

Learn how to create and call stored procedures in a JDBC context, using callable statements to invoke dbms logic, manage in/out parameters, and handle results.

Explore batch execution in JDBC by grouping statements, using executeBatch, and retrieving generated keys to obtain auto increment values after inserts.

Discover how JDBC handles binary data with blob columns, from tiny blob to long blob, and how to insert and retrieve files using prepared statements.

Manage transactions in JDBC to balance reliability and performance, ensuring all operations succeed or fail together. Turn off auto commit, then commit or rollback to enforce ACID properties.

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