Postgres Jdbc Driver -

// Store array Integer[] intArray = 1, 2, 3; Array array = conn.createArrayOf("integer", intArray); pstmt.setArray(1, array);

(automatic since JDBC 4+):

The room watched the dashboard. The graphs usually spiked into the red immediately upon startup. postgres jdbc driver

<dependency> <groupId>org.postgresql</groupId> <artifactId>postgresql</artifactId> <version>42.7.2</version> </dependency>

String insert = "INSERT INTO users (name, email) VALUES (?, ?)"; try (PreparedStatement pstmt = conn.prepareStatement(insert, Statement.RETURN_GENERATED_KEYS)) pstmt.setString(1, "John"); pstmt.setString(2, "john@example.com"); pstmt.executeUpdate(); ResultSet keys = pstmt.getGeneratedKeys(); if (keys.next()) long id = keys.getLong(1); // Store array Integer[] intArray = 1, 2,

Elias hit the Enter key.

"It’s the network," the SysAdmin said, sipping coffee. "Packet loss on the VLAN." "It’s the database config," the DBA argued, staring at a wall of logs. "The max_connections is too low." "It’s the code," the Lead Developer muttered. "We’re leaking connections somewhere." "It’s the network," the SysAdmin said, sipping coffee

For three weeks, the migration had been a slow-motion car crash. "Project Serenity" was supposed to be a simple lift-and-shift of the legacy monolith to a new cloud-native architecture. But the database—a massive, stubborn PostgreSQL cluster that held the company's entire financial history—was refusing to play nice.

<dependency> <groupId>com.zaxxer</groupId> <artifactId>HikariCP</artifactId> <version>5.1.0</version> </dependency> HikariConfig config = new HikariConfig(); config.setJdbcUrl("jdbc:postgresql://localhost/mydb"); config.setUsername("user"); config.setPassword("pass"); config.setMaximumPoolSize(10); config.setMinimumIdle(5); config.setConnectionTimeout(30000); config.setIdleTimeout(600000); config.setPoolName("PostgresPool");

Class.forName("org.postgresql.Driver"); // not required in modern Java