How is the use and interaction with Java technologies carried out during the development process?

Java technologies are used in the development process for creating, testing, and deploying applications on the Java platform. Key aspects of working with them:

• Using standard libraries and APIs: developers utilize a rich set of Java classes and interfaces to solve various tasks — from working with collections to network communication.

• Frameworks and tools: Spring, Hibernate, Maven, Gradle, and others help organize project structure, manage dependencies, and automate builds.

• Development environments (IDEs): IntelliJ IDEA, Eclipse, NetBeans provide a convenient interface for writing, debugging, and testing code.

• Interaction with JVM: Java applications are compiled into bytecode, which is executed by the JVM, ensuring portability and security.

• Integration with other technologies: via JDBC for database access, REST API for web service interaction, etc.

Example of using JDBC to connect to a database:

import java.sql.*;

public class DatabaseExample {
    public static void main(String[] args) throws SQLException {
        String url = "jdbc:mysql://localhost:3306/mydb";
        String user = "root";
        String password = "password";

        Connection conn = DriverManager.getConnection(url, user, password);
        Statement stmt = conn.createStatement();
        ResultSet rs = stmt.executeQuery("SELECT * FROM users");

        while (rs.next()) {
            System.out.println(rs.getString("username"));
        }

        rs.close();
        stmt.close();
        conn.close();
    }
}