Add a "Two minutes tutorial" to the README

Issue #4329

Author: fmbenhassine

README.md

@@ -8,9 +8,126 @@ If you are looking for a runtime orchestration tool for your Batch applications,
 
 # Getting Started
 
-## Guide
+## Two minutes tutorial
+
+This quick tutorial shows you how to setup a minimal project to run a simple batch job with Spring Batch.
+
+In your favorite IDE, create a new Maven-based Java 17+ project and add the following dependencies:
+
+```xml
+<dependencies>
+    <dependency>
+        <groupId>org.springframework.batch</groupId>
+        <artifactId>spring-batch-core</artifactId>
+        <version>${LATEST_VERSION}</version>
+    </dependency>
+    <dependency>
+        <groupId>org.hsqldb</groupId>
+        <artifactId>hsqldb</artifactId>
+        <version>${LATEST_VERSION}</version>
+        <scope>runtime</scope>
+    </dependency>
+</dependencies>
+```
+
+Then, create a configuration class to define the datasource and transaction manager that will be used by the job repository:
+
+```java
+import javax.sql.DataSource;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.jdbc.support.JdbcTransactionManager;
+import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseBuilder;
+
+@Configuration
+public class DataSourceConfiguration {
+
+	@Bean
+	public DataSource dataSource() {
+		return new EmbeddedDatabaseBuilder()
+			.addScript("/org/springframework/batch/core/schema-hsqldb.sql")
+			.build();
+	}
+
+	@Bean
+	public JdbcTransactionManager transactionManager(DataSource dataSource) {
+		return new JdbcTransactionManager(dataSource);
+	}
+
+}
+```
+
+In this tutorial, an embedded [HSQLDB](http://www.hsqldb.org) database is created and initialized with Spring Batch's meta-data tables.
+
+Finally, create a class to define the batch job:
+
+```java
+import org.springframework.batch.core.Job;
+import org.springframework.batch.core.JobParameters;
+import org.springframework.batch.core.Step;
+import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
+import org.springframework.batch.core.job.builder.JobBuilder;
+import org.springframework.batch.core.launch.JobLauncher;
+import org.springframework.batch.core.repository.JobRepository;
+import org.springframework.batch.core.step.builder.StepBuilder;
+import org.springframework.batch.repeat.RepeatStatus;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.jdbc.support.JdbcTransactionManager;
+
+@Configuration
+@EnableBatchProcessing
+@Import(DataSourceConfiguration.class)
+public class HelloWorldJobConfiguration {
+
+	@Bean
+	public Step step(JobRepository jobRepository, JdbcTransactionManager transactionManager) {
+		return new StepBuilder("step", jobRepository).tasklet((contribution, chunkContext) -> {
+			System.out.println("Hello world!");
+			return RepeatStatus.FINISHED;
+		}, transactionManager).build();
+	}
+
+	@Bean
+	public Job job(JobRepository jobRepository, Step step) {
+		return new JobBuilder("job", jobRepository).start(step).build();
+	}
+
+	public static void main(String[] args) throws Exception {
+		ApplicationContext context = new AnnotationConfigApplicationContext(HelloWorldJobConfiguration.class);
+		JobLauncher jobLauncher = context.getBean(JobLauncher.class);
+		Job job = context.getBean(Job.class);
+		jobLauncher.run(job, new JobParameters());
+	}
+
+}
+```
+
+The job in this tutorial is composed of a single step that prints "Hello world!" to the standard output.
+
+You can now run the `main` method of the `HelloWorldJobConfiguration` class to launch the job. The output should be similar to the following:
+
+```
+INFO: Finished Spring Batch infrastructure beans configuration in 8 ms.
+INFO: Starting embedded database: url='jdbc:hsqldb:mem:testdb', username='sa'
+INFO: No database type set, using meta data indicating: HSQL
+INFO: No Micrometer observation registry found, defaulting to ObservationRegistry.NOOP
+INFO: No TaskExecutor has been set, defaulting to synchronous executor.
+INFO: Job: [SimpleJob: [name=job]] launched with the following parameters: [{}]
+INFO: Executing step: [step]
+Hello world!
+INFO: Step: [step] executed in 10ms
+INFO: Job: [SimpleJob: [name=job]] completed with the following parameters: [{}] and the following status: [COMPLETED] in 25ms
+```
+
+## Getting Started Guide
 
-This is the quickest way to get started with a new Spring Batch project based on Spring Boot. You find the Getting Started Guide here: [Creating a Batch Service](https://spring.io/guides/gs/batch-processing/).
+This guide is a more realistic tutorial that shows a typical ETL batch job that reads data from a flat file, transforms it and writes it to a relational database.
+It is a Spring Batch project based on Spring Boot. You find the Getting Started Guide here: [Creating a Batch Service](https://spring.io/guides/gs/batch-processing/).
 
 ## Samples