What are the Spring Batch “default” Context Variables?

Question

In the Spring Batch step-scope documentation, there are three unexplained spring-batch context maps: jobParameters, jobExecutionContext, and

Answer 1

There aren't any default values. Think of jobParameters, jobExecutionContext, and stepExecutionContext as glorified Maps with helper methods for different primitive data types, e.g. getInt(). They're typically accessed from the StepExecution and JobExecution objects passed to *ExecutionListeners, or injecting using value injection, e.g. @Value("#{jobParameters['foo']}").

In this case, input.file.name is just a name chosen by the developer, e.g. maybe corresponding to a command line job parameter specified to the CommandLineJobRunner.