// define job parameters
JobParametersBuilder parameters = new JobParametersBuilder();

// create two steps
TaskletStep step1 = new TaskletStep();
TaskletStep step2 = new TaskletStep();
step1.setName("PreProcessingStep");
step2.setName("ChunkReadWriteStep");

// create two TaskLets
Tasklet tasklet1 = new PreProcessingTasklet();
Tasklet tasklet2; <------ HOW DO I ATTACH MY reader/writer IN THIS TASKLET??

// attach the TaskLet to the step
step1.setTasklet(tasklet1);
step2.setTasklet(tasklet2);

// attach the steps to the job
SimpleJob job = new SimpleJob("MyBatchJob");
job.addStep(step1);
job.addStep(step2);

jobLauncher.run(job, parameters.toJobParameters());

<job id="MyBatchJob">
    <step id="preprocessing" next="readWriteStep">
        <tasklet ref="PreProcessingTasklet"/>
    </step>
    <step id="readWriteStep">
        <tasklet>
            <chunk reader="FlatFileItemReader" writer="DBItemWriter"/>
        </tasklet>
    </step>
</job>