Updated job.adoc to have java config examples

This commit addresses the job.adoc and how to configure the various
pieces of the framework it covers via java configuration.

spring-batch-test/src/test/java/org/springframework/batch/test/JobLauncherTestUtilsTests.java

@@ -15,8 +15,6 @@
  */
 package org.springframework.batch.test;
 
-import static org.junit.Assert.assertEquals;
-
 import org.junit.Test;
 
 import org.springframework.batch.core.ExitStatus;
@@ -36,6 +34,8 @@ import org.springframework.context.annotation.AnnotationConfigApplicationContext
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
+import static org.junit.Assert.assertEquals;
+
 /**
  * @author mminella
  */