Java Guide: Read CSV & Insert into Database 📄

Learn how to read data from a CSV file and insert it into a database using Java. Explore a step-by-step guide with code examples for a seamless data migration process.
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Handling data stored in CSV (Comma-Separated Values) files is a common task in software development. Many times, we need to read data from these files and store it in a database for further analysis or usage. In this guide, we'll explore how to accomplish this using Java. We'll cover the process step by step and provide code examples to make it easier for you to implement.

Prerequisites

Before we start, ensure that you have the following:

A CSV file containing the data you want to insert into the database.

A database (e.g., MySQL, PostgreSQL) set up with the necessary table structure to accommodate the CSV data.

Step 1: Set up Database Connection

The first step is to establish a connection to your database. In Java, you can use JDBC (Java Database Connectivity) to interact with various databases. Here's an example of how you can set up a database connection using JDBC:

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Replace "jdbc:mysql://localhost:3306/your_database", "your_username", and "your_password" with your database URL, username, and password.

Step 2: Read CSV Data

To read data from a CSV file, you can use a library like OpenCSV. Add the following dependency to your project:

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Now, you can use OpenCSV to read the CSV file:

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Adjust the file path and the SQL query according to your CSV file and database table structure.

Conclusion

By following the steps outlined in this guide, you can easily read data from a CSV file and insert it into a database using Java. This process is crucial for managing large datasets efficiently and is a common requirement in many applications.

Feel free to adapt the code to suit your specific needs and explore additional features provided by libraries like OpenCSV and JDBC.