Spring job memo

import org.springframework.batch.core.Job;
import org.springframework.batch.core.JobParametersBuilder;
import org.springframework.batch.core.launch.JobLauncher;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class CommandLineJobLauncher {

    public static void main(String[] args) {
        if (args.length < 1) {
            System.out.println("Usage: CommandLineJobLauncher <jobName>");
            return;
        }

        String jobName = args[0];

        ApplicationContext context = new ClassPathXmlApplicationContext("batch-config.xml");
        JobLauncher jobLauncher = context.getBean(JobLauncher.class);

        Job job = context.getBean(jobName, Job.class);
        if (job != null) {
            try {
                jobLauncher.run(job, new JobParametersBuilder().toJobParameters());
            } catch (Exception e) {
                e.printStackTrace();
            }
        } else {
            System.out.println("Job not found: " + jobName);
        }
    }
}