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  1. Building a Java project is one of the best ways to strengthen your programming skills and understand how concepts work together in real-world applications. Below is a step-by-step guide to creating a Currency Converter project using Spring Boot, which is beginner-friendly yet covers essential Java development skills.

    Step 1: Set Up Your Environment

    • Install JDK 17+ and set JAVA_HOME.

    • Install an IDE like IntelliJ IDEA or Eclipse.

    • Create a new Spring Boot project with dependencies: Spring Web Spring Security (optional for authentication) H2 Database Jackson (for JSON parsing)

    Step 2: Create the Project Structure

    Your package structure might look like:

    com.example.currencyconverter
    ├── controller
    ├── service
    ├── model
    └── repository
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    Step 3: Implement the Model

    public class Conversion {
    private String fromCurrency;
    private String toCurrency;
    private double amount;
    private double result;

    // Getters and Setters
    }
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    Step 4: Service Layer for API Integration

    Use a public API like ExchangeRate-API:

    @Service
    public class CurrencyService {
    private final RestTemplate restTemplate = new RestTemplate();

    public double convert(String from, String to, double amount) {
    String url = "https://api.exchangerate-api.com/v4/latest/" + from;
    Map<String, Object> response = restTemplate.getForObject(url, Map.class);
    Map<String, Double> rates = (Map<String, Double>) response.get("rates");
    return amount * rates.get(to);
    }
    }
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  1. 100+ Free Java mini projects with Source Code - ProjectsGeek

    100+ Java mini projects with source code to download for free. Feel free to download abstracts, PPT's and project reports of Java projects in core Java, JSP project.

  2. 10 Best Java Projects for Beginners 2026 [With Source Code] - Hackr

    • And there we have it! If you've taken the time to build these 10 Java projects, you should be feeling much more competent and confident with Java. You'll also have a burgeoning Java portfolio that's packed full of interesting and practical Java projects, each demonstrating your dedication and abilities. I also hope you enjoyed following along with ...
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