Java Driver — Postgresql

PostgreSQL supports asynchronous messaging. The JDBC driver can listen for notifications.

// Delete try (PreparedStatement pstmt = conn.prepareStatement("DELETE FROM users WHERE id = ?")) pstmt.setLong(1, 1); pstmt.executeUpdate(); postgresql java driver

String url = "jdbc:postgresql://localhost:5432/mydb"; Properties props = new Properties(); props.setProperty("user", "postgres"); props.setProperty("password", "secret"); props.setProperty("ssl", "true"); try (Connection conn = DriverManager.getConnection(url, props)) System.out.println("Connected to PostgreSQL!"); catch (SQLException e) e.printStackTrace(); PostgreSQL supports asynchronous messaging

Always use try-with-resources to automatically close Connection , PreparedStatement , and ResultSet . 5. Handling PostgreSQL-Specific Data Types The driver maps standard SQL types to Java types, but also supports special PostgreSQL types. Working with JSONB PGobject jsonObject = new PGobject(); jsonObject.setType("jsonb"); jsonObject.setValue("\"key\": \"value\""); pstmt.setObject(1, jsonObject); Working with UUID pstmt.setObject(1, UUID.randomUUID()); Working with Arrays String[] tags = "java", "postgres", "jdbc"; Array sqlArray = conn.createArrayOf("text", tags); pstmt.setArray(1, sqlArray); 6. Connection Pooling: Don’t Open a Connection Per Request Creating a physical database connection for every request is expensive. Use HikariCP (the fastest and most popular pooling library). Connection Pooling: Don’t Open a Connection Per Request