{"id":5533,"date":"2025-08-30T10:24:27","date_gmt":"2025-08-30T10:24:27","guid":{"rendered":"https:\/\/codethataint.com\/blog\/?p=5533"},"modified":"2025-09-05T06:08:35","modified_gmt":"2025-09-05T06:08:35","slug":"hello-world-using-simple-spring-batch-application","status":"publish","type":"post","link":"https:\/\/codethataint.com\/blog\/hello-world-using-simple-spring-batch-application\/","title":{"rendered":"Hello World using Simple Spring Batch Application"},"content":{"rendered":"

Simple Spring Batch Job using Job, Step and Tasklet<\/strong><\/p>\n

Job – Big Picture, Step – building block, Tasklet – Worker<\/p><\/blockquote>\n\n\n\n\n\n\n\n
Component<\/th>\nRole<\/th>\nTypical Use Case<\/th>\n<\/tr>\n<\/thead>\n
Job<\/td>\nOrchestrates steps<\/td>\nFull batch process<\/td>\n<\/tr>\n
Step<\/td>\nExecutes a unit of work<\/td>\nReading, processing, writing<\/td>\n<\/tr>\n
Tasklet<\/td>\nPerforms a single task<\/td>\nLogging, cleanup, file ops<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

OrderSchedulerApplication.java<\/strong><\/p>\n

\r\npackage com.mugil.org;\r\n\r\nimport org.springframework.boot.SpringApplication;\r\nimport org.springframework.boot.autoconfigure.SpringBootApplication;\r\n\r\n@SpringBootApplication\r\npublic class OrderSchedulerApplication {\r\n\tpublic static void main(String[] args) {\r\n\t\tSpringApplication.run(OrderSchedulerApplication.class, args);\r\n\t}\r\n}\r\n<\/pre>\n
BatchConfig.java<\/strong><\/p>\n
\r\npackage com.mugil.org.config;\r\n\r\nimport org.springframework.batch.core.*;\r\nimport org.springframework.batch.core.job.builder.JobBuilder;\r\nimport org.springframework.batch.core.repository.JobRepository;\r\nimport org.springframework.batch.core.scope.context.ChunkContext;\r\nimport org.springframework.batch.core.step.builder.StepBuilder;\r\nimport org.springframework.batch.core.step.tasklet.Tasklet;\r\nimport org.springframework.batch.repeat.RepeatStatus;\r\nimport org.springframework.context.annotation.Bean;\r\nimport org.springframework.context.annotation.Configuration;\r\nimport org.springframework.transaction.PlatformTransactionManager;\r\n\r\n@Configuration\r\npublic class BatchConfig {\r\n    @Bean\r\n    public Job job(JobRepository jobRepository, Step step) {\r\n        return new JobBuilder("job", jobRepository)\r\n                .start(step)\r\n                .build();\r\n    }\r\n\r\n    @Bean\r\n    public Step step(JobRepository jobRepository, PlatformTransactionManager transactionManager) {\r\n        StepBuilder stepBuilderOne = new StepBuilder("step1", jobRepository);\r\n        return stepBuilderOne.tasklet(helloWorldTasklet(), transactionManager)\r\n                .build();\r\n    }\r\n\r\n    @Bean\r\n    public Tasklet helloWorldTasklet() {\r\n        return (StepContribution contribution, ChunkContext chunkContext) -> {\r\n            System.out.println("Hello, World!");\r\n            return RepeatStatus.FINISHED;\r\n        };\r\n    }\r\n}\r\n<\/pre>\n
Output<\/strong><\/p>\n
\r\n2025-08-30T15:33:46.902+05:30  INFO 3620 --- [OrderScheduler] [           main] o.s.b.c.l.s.TaskExecutorJobLauncher      : Job: [SimpleJob: [name=job]] launched with the following parameters: [{}]\r\n2025-08-30T15:33:46.909+05:30  INFO 3620 --- [OrderScheduler] [           main] o.s.batch.core.job.SimpleStepHandler     : Executing step: [step1]\r\nHello, World!\r\n2025-08-30T15:33:46.914+05:30  INFO 3620 --- [OrderScheduler] [           main] o.s.batch.core.step.AbstractStep         : Step: [step1] executed in 3ms\r\n2025-08-30T15:33:46.917+05:30  INFO 3620 --- [OrderScheduler] [           main] o.s.b.c.l.s.TaskExecutorJobLauncher      : Job: [SimpleJob: [name=job]] completed with the following parameters: [{}] and the following status: [COMPLETED] in 9ms\r\n\r\n<\/pre>\n
Having separate Tasklet
\nHelloWorldTasklet.java<\/strong><\/p>\n
\r\npublic class HelloWorldTasklet implements Tasklet {\r\n    @Override\r\n    public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {\r\n        System.out.println("Hello, World!");\r\n        return RepeatStatus.FINISHED;\r\n    }\r\n}\r\n<\/pre>\n
FAQ<\/strong><\/p>\n
    \n
  1. You cannot have multiple Tasklets however you can have multiple Steps<\/li>\n<\/ol>\n
    For the above job the following tables would be impacted.<\/p>\n
      \n
    1. batch_job_instance(unique job entity which needs to run)<\/li>\n
    2. batch_job_execution(Instance may have one execution if execution is success or more than one execution if failed)<\/li>\n
    3. batch_step_execution(Job would have multiple steps)<\/li>\n
    4. batch_job_execution_context(Context which is shared by among different steps in job)<\/li>\n<\/ol>\n
      \r\nSELECT BJI.job_name, BSE.step_name, BJE.start_time, BJE.end_time, BJE.status as job_staus, \r\n       BSE.status as step_staus,  BJE.exit_code, BJE.exit_message\r\n  FROM public.batch_job_instance   BJI INNER JOIN \r\n       public.batch_job_execution  BJE ON BJE.job_instance_id = BJI.job_instance_id INNER JOIN \r\n       public.batch_step_execution BSE ON BJE.job_execution_id = BSE.job_execution_id\t   \r\n WHERE BJE.job_execution_id=1;\r\n<\/pre>\n
      Job Execution Context and Step Execution Context<\/strong>
      \nJob Execution Context<\/strong> – Available throughout the entire job execution across various steps. Stores data that needs to be shared across multiple steps or retrieved after a job restart. it survives restarts and failures.<\/p>\n
      I.E.
      \nIf you download a file in Step 1 and need its path in Step 3, store the path in the Job Execution Context.<\/p>\n
      Step Execution Context<\/strong> – Limited to the specific step execution.Stores data relevant only to that step, such as reader\/writer state or counters.
      \nI.E.
      \nA reader might store the last read line number here so it can resume from that point if the step fails. We can pass values between steps and jobs using ExecutionContextPromotionListener.<\/p>\n","protected":false},"excerpt":{"rendered":"
      Simple Spring Batch Job using Job, Step and Tasklet Job – Big Picture, Step – building block, Tasklet – Worker Component Role Typical Use Case Job Orchestrates steps Full batch process Step Executes a unit of work Reading, processing, writing Tasklet Performs a single task Logging, cleanup, file ops OrderSchedulerApplication.java package com.mugil.org; import org.springframework.boot.SpringApplication; import… Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[371],"tags":[],"class_list":["post-5533","post","type-post","status-publish","format-standard","hentry","category-spring-batch"],"_links":{"self":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/5533","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/comments?post=5533"}],"version-history":[{"count":5,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/5533\/revisions"}],"predecessor-version":[{"id":5541,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/5533\/revisions\/5541"}],"wp:attachment":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/media?parent=5533"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/categories?post=5533"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/tags?post=5533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}