Like any Java library, you'll first need to get the JavaConfig jar (and the jars it depends on) into your classpath.

3.1.2. Maven 2

Assuming your project uses a Maven2 build infrastructure, using JavaConfig is as simple as adding the following to your POM

<dependencies>
    <dependency>
        <groupId>org.springframework.javaconfig</groupId>
        <artifactId>spring-javaconfig</artifactId>
        <version>1.0.0.m3</version>
    </dependency>
</dependencies>

	Note
	Please note that this release is not published at the central Maven repository. Instead it is published on Amazon's S3 service, like all Spring milestones. To use it, add the following repository to your POM: <repository> <id>spring-milestone</id> <name>Spring Milestone Repository</name> <url>http://s3.amazonaws.com/maven.springframework.org/milestone</url> </repository>

	Tip
	See Appendix C, Maven2 POM configurations for more information about using Maven2 with Spring JavaConfig

@Configuration
public class ApplicationConfig {
    @Bean
    public TransferService transferService() {
        return new TransferServiceImpl(accountRepository());
    }

    @Bean
    public AccountRepository accountRepository() {
        return new JdbcAccountRepository(dataSource());
    }

    @Bean
    public DataSource dataSource() {
        return new DriverManagerDataSource(...);
    }
}

Let's create a very basic, command-line application to allow users to transfer money from one account to another.

public class SimpleTransferApplication {
    public static void main(String... args) {
        double amount = new Double(args[0]);
        int sourceAcctId = new Integer(args[1]);
        int destAcctId = new Integer(args[2]);

        JavaConfigApplicationContext context = new JavaConfigApplicationContext(ApplicationConfig.class);
        TransferService transferService = context.getBean(TransferService.class);
        transferService.transfer(300.00, sourceAcctId, destAccountId);
    }
}

That's it! You're now ready for Part II, “API Reference”, where you'll walk through each of the features of Spring JavaConfig.