import javax.batch.api.chunk.ItemWriter;
import java.util.logging.Logger;
public class CustomWriter implements ItemWriter {
 private static final Logger LOGGER = Logger.getLogger(CustomWriter.class.getCanonicalName());
 @Override
 public void open(Serializable checkpoint) throws Exception { 
 // some logic
 LOGGER.logp(Level.FINE, CustomWriter.class.getSimpleName(), "open()", "I am opening writing");
 }
 @Override
public void close() throws Exception { 
 // some logic
 LOGGER.logp(Level.FINE, CustomWriter.class.getSimpleName(), "close ()", "I am closing down writing");
 }
 @Override
 public void writeItems(List<Object> items) throws Exception { 
 // some logic
 LOGGER.logp(Level.FINE, CustomWriter.class.getSimpleName(), "writeItens()",
 "I am writing this number of lines: " + items.size());
 }
 @Override
 public Serializable checkpointInfo() throws Exception {
 // some logic
 return "No op writer";
 }
}