Connecting Java to MySQL using JDBC — CRUD operations, prepared statements, and database-driven logic.
- Connecting to a MySQL database from Java using JDBC
- Performing full CRUD:
INSERT,SELECT,UPDATE,DELETE - Using
PreparedStatementto prevent SQL injection - Managing connections cleanly with try-with-resources
Requirements: Java 17+, MySQL 8+, MySQL Connector/J
1. Set up the database
Run the SQL script to create the schema:
mysql -u root -p < schema.sql2. Update credentials
In DBConnection.java, set your MySQL host, username, and password.
3. Compile and run
javac -cp .:mysql-connector-j-*.jar *.java
java -cp .:mysql-connector-j-*.jar Main- JDBC connection lifecycle (DriverManager → Connection → Statement → ResultSet)
- PreparedStatement vs Statement — why it matters for security
- Exception handling for SQL errors
- Mapping Java objects to database rows
Built as part of learning backend fundamentals — lays the groundwork for building database-driven Java applications.