BATCH-325:Added close() to readers and writers.

spring-batch-samples/src/main/java/org/springframework/batch/sample/dao/JdbcGameDao.java

@@ -34,4 +34,7 @@ public class JdbcGameDao extends JdbcDaoSupport implements ItemWriter {
 		this.getJdbcTemplate().update(INSERT_GAME, args);
 	}
 
+	public void close() throws Exception {
+	}
+
 }

spring-batch-samples/src/main/java/org/springframework/batch/sample/dao/JdbcPlayerSummaryDao.java

@@ -28,4 +28,7 @@ public class JdbcPlayerSummaryDao extends JdbcDaoSupport implements ItemWriter {
 		getJdbcTemplate().update(INSERT_SUMMARY, args);
 	}
 
+	public void close() throws Exception {
+	}
+
 }

spring-batch-samples/src/main/java/org/springframework/batch/sample/item/writer/CustomerCreditIncreaseWriter.java

@@ -34,4 +34,7 @@ public class CustomerCreditIncreaseWriter implements ItemWriter {
 		customerCreditDao.writeCredit(customerCredit);
 	}
 
+	public void close() throws Exception {
+	}
+
 }

spring-batch-samples/src/main/java/org/springframework/batch/sample/item/writer/CustomerCreditUpdateWriter.java

@@ -42,4 +42,7 @@ public class CustomerCreditUpdateWriter implements ItemWriter {
         this.dao = writer;
     }
 
+	public void close() throws Exception {
+	}
+
 }

spring-batch-samples/src/main/java/org/springframework/batch/sample/item/writer/DummyItemWriter.java

@@ -27,4 +27,7 @@ public class DummyItemWriter implements ItemWriter {
 		// NO-OP
 	}
 
+	public void close() throws Exception {
+	}
+
 }

spring-batch-samples/src/main/java/org/springframework/batch/sample/item/writer/PlayerItemWriter.java

@@ -15,4 +15,7 @@ public class PlayerItemWriter implements ItemWriter {
 	public void setPlayerDao(PlayerDao playerDao) {
 		this.playerDao = playerDao;
 	}
+
+	public void close() throws Exception {
+	}
 }

spring-batch-samples/src/main/java/org/springframework/batch/sample/item/writer/StagingItemWriter.java

@@ -73,4 +73,7 @@ public class StagingItemWriter extends JdbcDaoSupport implements
 						new int[] { Types.BIGINT, Types.BIGINT, Types.BLOB, Types.CHAR});
 	}
 
+	public void close() throws Exception {
+	}
+
 }