From a2f4bf1c6e2b5eea946d65acb208f7e7848f6015 Mon Sep 17 00:00:00 2001
From: Karsten <karsten.budaeus@sbb.ch>
Date: Tue, 22 Oct 2024 13:20:42 +0200
Subject: Minor code Liniting

---
 .../uic/barcode/asn1/datatypes/Asn1Integer.java    |  2 +-
 .../org/uic/barcode/asn1/uper/UperEncoder.java     |  9 ++---
 .../dynamicFrame/api/SimpleDynamicFrame.java       | 35 +++++++---------
 src/main/java/org/uic/barcode/package.html         |  2 +-
 .../java/org/uic/barcode/staticFrame/package.html  |  4 +-
 .../org/uic/barcode/ticket/api/asn/package.html    |  4 +-
 .../org/uic/barcode/ticket/api/impl/package.html   |  2 +-
 .../org/uic/barcode/ticket/api/spec/package.html   |  7 ++--
 .../ticket/api/utils/Api2OpenAsnEncoder.java       | 46 ++++++++++-----------
 .../ticket/api/utils/Api2OpenAsnEncoderV2.java     | 45 ++++++++++-----------
 .../ticket/api/utils/Api2OpenAsnEncoderV3.java     | 47 +++++++++++-----------
 .../uic/barcode/utils/AlgorithmNameResolver.java   | 12 ++++--
 12 files changed, 104 insertions(+), 111 deletions(-)

diff --git a/src/main/java/org/uic/barcode/asn1/datatypes/Asn1Integer.java b/src/main/java/org/uic/barcode/asn1/datatypes/Asn1Integer.java
index e5cfb4c..f4feb42 100644
--- a/src/main/java/org/uic/barcode/asn1/datatypes/Asn1Integer.java
+++ b/src/main/java/org/uic/barcode/asn1/datatypes/Asn1Integer.java
@@ -19,7 +19,7 @@ public class Asn1Integer {
     }
     
     public Long longObject () {
-    	return Long.valueOf(value()); 
+    	return value();
     }
 
 	public Asn1Integer(Long num) {
diff --git a/src/main/java/org/uic/barcode/asn1/uper/UperEncoder.java b/src/main/java/org/uic/barcode/asn1/uper/UperEncoder.java
index 647a550..d834acd 100644
--- a/src/main/java/org/uic/barcode/asn1/uper/UperEncoder.java
+++ b/src/main/java/org/uic/barcode/asn1/uper/UperEncoder.java
@@ -9,10 +9,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.Comparator;
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
 
 import org.uic.barcode.asn1.datatypes.Asn1Default;
 import org.uic.barcode.asn1.datatypes.Asn1Optional;
@@ -31,7 +28,7 @@ import org.uic.barcode.logger.LoggerFactory;
  *
  * @see ITU-T Recommendation <a
  *      href="http://www.itu.int/ITU-T/recommendations/rec.aspx?rec=x.691">X.691</a>
- *
+ * <p>
  *      TODO: Cover the rest of (useful) ASN.1 datatypes and PER-visible constraints,
  *      write unit tests for them. Clean-up, do more refactoring.
  **/
@@ -290,7 +287,7 @@ public final class UperEncoder {
             T obj, Asn1ContainerFieldSorter sorter)
                     throws IllegalArgumentException, IllegalAccessException {
         for (Field f : sorter.extensionFields) {
-        	//CG elements with default value will not be not included
+        	//CG elements with a default value will not be included
             if (f.get(obj) != null && !isDefault(f,f.get(obj)) ) { 
             	return true; 
             }
@@ -356,7 +353,7 @@ public final class UperEncoder {
         if (hasExtensionMarker) {
             boolean extensionIsActive = bitqueue.get();
             if (extensionIsActive) {
-            	//in extensions are encoded as uncontraint integers, thius an Asn1BigInteger type should be used(a lower range bound might be applied). 
+            	//in extensions are encoded as uncontraint integers, thius an Asn1BigInteger type should be used (a lower range bound might be applied).
                 throw new UnsupportedOperationException("int extension are not supported yet");
             }
         }
diff --git a/src/main/java/org/uic/barcode/dynamicFrame/api/SimpleDynamicFrame.java b/src/main/java/org/uic/barcode/dynamicFrame/api/SimpleDynamicFrame.java
index 15f169b..7517880 100644
--- a/src/main/java/org/uic/barcode/dynamicFrame/api/SimpleDynamicFrame.java
+++ b/src/main/java/org/uic/barcode/dynamicFrame/api/SimpleDynamicFrame.java
@@ -115,8 +115,8 @@ public class SimpleDynamicFrame implements IDynamicFrame {
 	
 	/**
 	 * Verify the level 2 signature
-	 * 
-	 * Note:  an appropriate security provider (e.g. BC) must be registered before 
+	 * <p>
+	 * Note: an appropriate security provider (e.g. BC) must be registered before
 	 *
 	 * @return the int
 	 * @throws EncodingFormatException 
@@ -129,10 +129,10 @@ public class SimpleDynamicFrame implements IDynamicFrame {
 	
 	/**
 	 * Verify the level 2 signature
-	 * 
-	 * Note:  an appropriate security provider (e.g. BC) must be registered before 
+	 * <p>
+	 * Note: an appropriate security provider (e.g. BC) must be registered before
 	 *
-	 * @param provider the registered security provider
+	 * @param prov the registered security provider
 	 * @return the return error code
 	 * @throws EncodingFormatException 
 	 */	
@@ -144,7 +144,7 @@ public class SimpleDynamicFrame implements IDynamicFrame {
 		if (getLevel2Data() == null
 				|| getLevel2Data().getLevel1Data() == null 
 				|| getLevel2Data().getLevel1Data().getLevel2KeyAlg() == null
-				|| getLevel2Data().getLevel1Data().getLevel2KeyAlg().length() == 0) {
+				|| getLevel2Data().getLevel1Data().getLevel2KeyAlg().isEmpty()) {
 			return Constants.LEVEL2_VALIDATION_NO_KEY;
 		}
 		
@@ -152,7 +152,7 @@ public class SimpleDynamicFrame implements IDynamicFrame {
 		String level2SigAlg = this.getLevel2Data().getLevel1Data().getLevel2SigningAlg();
 
 	 
-		if (level2KeyAlg == null || level2KeyAlg.length() == 0) {
+		if (level2KeyAlg == null || level2KeyAlg.isEmpty()) {
 			return Constants.LEVEL2_VALIDATION_NO_KEY;
 		}
 		
@@ -166,7 +166,7 @@ public class SimpleDynamicFrame implements IDynamicFrame {
 		} catch (Exception e1) {
 			return Constants.LEVEL2_VALIDATION_KEY_ALG_NOT_IMPLEMENTED;	
 		}
-		if (keyAlgName == null || keyAlgName.length() == 0) {
+		if (keyAlgName == null || keyAlgName.isEmpty()) {
 			return Constants.LEVEL2_VALIDATION_KEY_ALG_NOT_IMPLEMENTED;	
 		}
 		
@@ -259,7 +259,6 @@ public class SimpleDynamicFrame implements IDynamicFrame {
 	public int validateLevel1(PublicKey key, Provider prov, String signatureAlgorithmOid) throws EncodingFormatException {
 
 		if (getLevel2Data() == null
-				|| getLevel2Data().getLevel1Signature() == null
 				|| getLevel2Data().getLevel1Signature() == null
 				|| getLevel2Data().getLevel1Signature().length == 0) {
 			return Constants.LEVEL1_VALIDATION_NO_SIGNATURE;
@@ -274,13 +273,13 @@ public class SimpleDynamicFrame implements IDynamicFrame {
 		if (getLevel2Data() != null 
 				&& getLevel2Data().getLevel1Data() != null 
 				&& getLevel2Data().getLevel1Data().getLevel1SigningAlg() != null
-				&& getLevel2Data().getLevel1Data().getLevel1SigningAlg().length() > 0) {
+				&& !getLevel2Data().getLevel1Data().getLevel1SigningAlg().isEmpty()) {
 				signingAlgorithmOid = getLevel2Data().getLevel1Data().getLevel1SigningAlg();	
 		} else {
 			signingAlgorithmOid = signatureAlgorithmOid;
 		}
 				
-		if (signingAlgorithmOid == null || signingAlgorithmOid.length() == 0) {
+		if (signingAlgorithmOid == null || signingAlgorithmOid.isEmpty()) {
 			return Constants.LEVEL1_VALIDATION_NO_SIGNATURE;
 		}		
 		
@@ -426,12 +425,10 @@ public class SimpleDynamicFrame implements IDynamicFrame {
 
 	/**
 	 * Sign the contained data block.
-	 * 
-	 * Note:  an appropriate security provider (e.g. BC) must be registered before 
+	 * <p>
+	 * Note: an appropriate security provider (e.g. BC) must be registered before
 	 *
 	 * @param key the key
-	 * @return 
-	 * @return the byte[]
 	 * @throws Exception 
 	 */
 	@Override
@@ -443,13 +440,11 @@ public class SimpleDynamicFrame implements IDynamicFrame {
 
 	/**
 	 * Sign the contained data block.
-	 * 
-	 * Note:  an appropriate security provider (e.g. BC) must be registered before 
+	 * <p>
+	 * Note: an appropriate security provider (e.g. BC) must be registered before
 	 *
 	 * @param key the key
-	 * @param security provider - security provider that must be sued to create the signature
-	 * @return 
-	 * @return the byte[]
+	 * @param prov provider - security provider that must be sued to create the signature
 	 * @throws Exception 
 	 */
 	@Override
diff --git a/src/main/java/org/uic/barcode/package.html b/src/main/java/org/uic/barcode/package.html
index 075af29..e68d27f 100644
--- a/src/main/java/org/uic/barcode/package.html
+++ b/src/main/java/org/uic/barcode/package.html
@@ -1,5 +1,5 @@
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<html>
+<html lang="en">
 <head></head>
 <body>
 
diff --git a/src/main/java/org/uic/barcode/staticFrame/package.html b/src/main/java/org/uic/barcode/staticFrame/package.html
index 5ad7515..95e1fc9 100644
--- a/src/main/java/org/uic/barcode/staticFrame/package.html
+++ b/src/main/java/org/uic/barcode/staticFrame/package.html
@@ -1,6 +1,6 @@
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<html>
-<head></head>
+<html lang="en">
+<head><title>static bar code header frame</title></head>
 <body>
 
 	<h1>static bar code header frame</h1>
diff --git a/src/main/java/org/uic/barcode/ticket/api/asn/package.html b/src/main/java/org/uic/barcode/ticket/api/asn/package.html
index 214572b..4d59caa 100644
--- a/src/main/java/org/uic/barcode/ticket/api/asn/package.html
+++ b/src/main/java/org/uic/barcode/ticket/api/asn/package.html
@@ -1,9 +1,9 @@
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<html>
+<html lang="en">
 <head>asn
 </head>
 <body>Provides code generated from the asn.1 specification using
-	the openAsn compiler to implement the asn.1 encoduing and decoding
+	the openAsn compiler to implement the asn.1 encoding and decoding
 	using unaligned PER encoding.
 </body>
 </html>
\ No newline at end of file
diff --git a/src/main/java/org/uic/barcode/ticket/api/impl/package.html b/src/main/java/org/uic/barcode/ticket/api/impl/package.html
index f2ef54e..9c0cffe 100644
--- a/src/main/java/org/uic/barcode/ticket/api/impl/package.html
+++ b/src/main/java/org/uic/barcode/ticket/api/impl/package.html
@@ -1,5 +1,5 @@
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<html>
+<html lang="en">
 <head>Ticket Data Implementation
 </head>
 <body>
diff --git a/src/main/java/org/uic/barcode/ticket/api/spec/package.html b/src/main/java/org/uic/barcode/ticket/api/spec/package.html
index f3961b8..7105cd9 100644
--- a/src/main/java/org/uic/barcode/ticket/api/spec/package.html
+++ b/src/main/java/org/uic/barcode/ticket/api/spec/package.html
@@ -1,13 +1,12 @@
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<html>
+<html lang="en">
 <head>UIC ticket interface
 </head>
 <body>
 	Provides the interface specification of the ticket data. Any ticket
 	data implementation which wants to use the provided encoder / decoder
 	function must implement this interface. A simple implementation is
-	provided in package
-	<b>impl
-		</p>. 
+	provided in the package
+	<b>impl</b>.
 </body>
 </html>
\ No newline at end of file
diff --git a/src/main/java/org/uic/barcode/ticket/api/utils/Api2OpenAsnEncoder.java b/src/main/java/org/uic/barcode/ticket/api/utils/Api2OpenAsnEncoder.java
index 615f646..da8092b 100644
--- a/src/main/java/org/uic/barcode/ticket/api/utils/Api2OpenAsnEncoder.java
+++ b/src/main/java/org/uic/barcode/ticket/api/utils/Api2OpenAsnEncoder.java
@@ -69,8 +69,10 @@ import org.uic.barcode.ticket.api.asn.omv1.SequenceOfRegisteredLuggageType;
 import org.uic.barcode.ticket.api.asn.omv1.SequenceOfServiceBrands;
 import org.uic.barcode.ticket.api.asn.omv1.SequenceOfTariffType;
 import org.uic.barcode.ticket.api.asn.omv1.SequenceOfTicketLinkType;
+import org.uic.barcode.ticket.api.asn.omv1.SequenceOfTimeRangeType;
 import org.uic.barcode.ticket.api.asn.omv1.SequenceOfTravelerId;
 import org.uic.barcode.ticket.api.asn.omv1.SequenceOfTravelerType;
+import org.uic.barcode.ticket.api.asn.omv1.SequenceOfValidityPeriodType;
 import org.uic.barcode.ticket.api.asn.omv1.SequenceOfViaStationType;
 import org.uic.barcode.ticket.api.asn.omv1.SeriesDetailType;
 import org.uic.barcode.ticket.api.asn.omv1.ServiceType;
@@ -92,8 +94,6 @@ import org.uic.barcode.ticket.api.asn.omv1.VatDetailType;
 import org.uic.barcode.ticket.api.asn.omv1.ViaStationType;
 import org.uic.barcode.ticket.api.asn.omv1.VoucherData;
 import org.uic.barcode.ticket.api.asn.omv1.ZoneType;
-import org.uic.barcode.ticket.api.asn.omv1.SequenceOfValidityPeriodType;
-import org.uic.barcode.ticket.api.asn.omv1.SequenceOfTimeRangeType;
 import org.uic.barcode.ticket.api.spec.IBerth;
 import org.uic.barcode.ticket.api.spec.ICarCarriageReservation;
 import org.uic.barcode.ticket.api.spec.ICardReference;
@@ -745,7 +745,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 		}
 
 	
-		if (document.getTariffs() != null && document.getTariffs().size() > 0){
+		if (document.getTariffs() != null && !document.getTariffs().isEmpty()){
 			asnData.setTariffs(encodeTariffCollection(document.getTariffs()));
 		}
 		
@@ -753,7 +753,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 			asnData.setClassCode(convertTravelClass(document.getClassCode()));
 		}
 		
-		if (document.getServiceLevel() != null && document.getServiceLevel().length() > 0) {
+		if (document.getServiceLevel() != null && !document.getServiceLevel().isEmpty()) {
 			asnData.setServiceLevel(document.getServiceLevel());
 		}
 		
@@ -765,7 +765,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 			asnData.setIssuerAutorizationId(Long.valueOf(document.getAuthorizationCode()));
 		}
 
-		if (document.getValidRegionList()!= null && document.getValidRegionList().size() > 0) {
+		if (document.getValidRegionList()!= null && !document.getValidRegionList().isEmpty()) {
 			asnData.setValidRegion(encodeRegionCollection(document.getValidRegionList(), issuingDate));
 		}
 
@@ -795,11 +795,11 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 		asnData.setFromStationNameUTF8(route.getFromStationName());
 		asnData.setToStationNameUTF8(route.getToStationName());		
 		
-		if (route.getValidRegionList()!= null && route.getValidRegionList().size() > 0) {
+		if (route.getValidRegionList()!= null && !route.getValidRegionList().isEmpty()) {
 			asnData.setValidReturnRegion(encodeRegionCollection(route.getValidRegionList(), issuingDate));
 		}
 		
-		if (route.getValidRegionDesc() != null && route.getValidRegionDesc().length() > 0){
+		if (route.getValidRegionDesc() != null && !route.getValidRegionDesc().isEmpty()){
 			asnData.setValidReturnRegionDesc(route.getValidRegionDesc());
 		}
 		
@@ -823,7 +823,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 
 		asnData.setMaxNonHandLuggagePieces(UicEncoderUtils.getRestrictedIntWithDefault(luggageRestriction.getMaxNonHandLuggagePieces(),1,99,1));
 				
-		if (luggageRestriction.getRegisteredLuggage() != null && luggageRestriction.getRegisteredLuggage().size() > 0) {
+		if (luggageRestriction.getRegisteredLuggage() != null && !luggageRestriction.getRegisteredLuggage().isEmpty()) {
 			asnData.setRegisteredLuggage(encodeRegisteredLuggage(luggageRestriction.getRegisteredLuggage()));
 		}
 		
@@ -931,7 +931,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 			asnData.setClassCode(convertTravelClass(document.getClassCode()));
 		}
 		
-		if (document.getServiceLevel() != null && document.getServiceLevel().length() > 0) {
+		if (document.getServiceLevel() != null && !document.getServiceLevel().isEmpty()) {
 			asnData.setServiceLevel(document.getServiceLevel());
 		}
 		
@@ -943,12 +943,12 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 			asnData.setIssuerAutorizationId(Long.valueOf(document.getAuthorizationCode()));
 		}
 
-		if (document.getValidRegionList() != null && document.getValidRegionList().size() > 0) {
+		if (document.getValidRegionList() != null && !document.getValidRegionList().isEmpty()) {
 			asnData.setValidRegion(encodeRegionCollection(document.getValidRegionList(), issuingDate));
 		}		
 		asnData.setValidRegionDesc(document.getValidRegionDesc());
 		
-		if (document.getIncludedAddOns() != null && document.getIncludedAddOns().size() > 0) {
+		if (document.getIncludedAddOns() != null && !document.getIncludedAddOns().isEmpty()) {
 			asnData.setIncludedAddOns(encodeIncludedAddons(document.getIncludedAddOns(),issuingDate, document.getClassCode()));
 		}
 		
@@ -1060,7 +1060,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 		asnData.setExcludedServiceBrands(SequenceOfServiceBrands.getSequence(UicEncoderUtils.encodeRestrictedIntegerCollection(document.getExcludedServiceBrands(),1,32000)));		
 		asnData.setIncludedServiceBrands(SequenceOfServiceBrands.getSequence(UicEncoderUtils.encodeRestrictedIntegerCollection(document.getIncludedServiceBrands(),1,32000)));			
 				
-		if (document.getValidRegionList() != null && document.getValidRegionList().size() > 0) {
+		if (document.getValidRegionList() != null && !document.getValidRegionList().isEmpty()) {
 			asnData.setValidRegion(encodeRegionCollection(document.getValidRegionList(), issuingDate));
 		}
 		asnData.setValidRegionDesc(document.getValidRegionDesc());
@@ -1188,7 +1188,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 			asnData.setCity(Asn1BigInteger.toAsn1(data.getCity()));
 		}
 		
-		if (data.getNUTScode() != null && data.getNUTScode().length() > 0) {
+		if (data.getNUTScode() != null && !data.getNUTScode().isEmpty()) {
 			asnData.setNutsCode(data.getNUTScode());			
 		}
 		
@@ -1236,7 +1236,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 	 * @return the polygone type
 	 * @throws EncodingFormatException the encoding format exception
 	 */
-	private PolygoneType encodePolygone(IPolygone data) throws EncodingFormatException {
+    private PolygoneType encodePolygone(IPolygone data) {
 		if (data == null) return null;	
 		if (data.getEdges() == null || data.getEdges().isEmpty()) {
 			return null;
@@ -1638,7 +1638,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 		
 		asnData.setClassCode(convertTravelClass(document.getClassCode()));
 		
-		if (document.getCountries() != null && document.getCountries().size() > 0){
+		if (document.getCountries() != null && !document.getCountries().isEmpty()){
 			asnData.setCountries(SequenceOfCountries.getSequence(UicEncoderUtils.encodeRestrictedIntegerCollection(document.getCountries(),1,250)));
 		}
 
@@ -1657,7 +1657,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 		
 
 		
-		if(document.getValidRegionList()!= null && document.getValidRegionList().size() > 0) {
+		if(document.getValidRegionList()!= null && !document.getValidRegionList().isEmpty()) {
 			asnData.setValidRegion(encodeRegionCollection(document.getValidRegionList(), issuingDate));
 		}		
 		
@@ -1680,7 +1680,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 	}	
 	
 	
-	private ValidityPeriodDetailType encodeValidityDetails(	IValidityDetails validityDetails, Date referenceDate) throws EncodingFormatException {
+    private ValidityPeriodDetailType encodeValidityDetails(IValidityDetails validityDetails, Date referenceDate) {
 		
 		if ( (validityDetails.getTimeRanges() == null || validityDetails.getTimeRanges().isEmpty())
 				||
@@ -1828,7 +1828,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 			for (String station : document.getStations()) {
 				String ia5 = UicEncoderUtils.getIA5NonNum(station);
 				Long num = UicEncoderUtils.getNum(station);
-				if (ia5 != null && ia5.length() > 0) {
+				if (ia5 != null && !ia5.isEmpty()) {
 					stationsIA5.add(ia5);
 				}
 				if (num != null && num > 0){
@@ -1847,7 +1847,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 			
 			SequenceOfStringUTF8 asnList = new SequenceOfStringUTF8();
 			for ( String text  :document.getStationNames()){
-				if (text.length() > 0) {
+				if (!text.isEmpty()) {
 					asnList.add(text);
 				}
 			}
@@ -1963,7 +1963,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 			
 			CardReferenceType asnCard = new CardReferenceType();
 			
-			if (card.getCardId() != null && card.getCardId().length() > 0){
+			if (card.getCardId() != null && !card.getCardId().isEmpty()){
 				//only longs allowed
 				 try {
 					 long num = Long.parseLong(card.getCardId());
@@ -2100,7 +2100,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 	private IssuingData encodeIssuingDetails(IIssuingDetail data) throws EncodingFormatException {
 		
 		if (data == null){
-			throw new EncodingFormatException("Issuind data missing");
+			throw new EncodingFormatException("Issuing data missing");
 		}
 		
 		IssuingData asnData = new IssuingData();
@@ -2218,7 +2218,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 		asnDocument.getTicket().setCustomerCard(asnData);		
 		
 		
-		if (document.getCardId() != null && document.getCardId().length() > 0){
+		if (document.getCardId() != null && !document.getCardId().isEmpty()){
 		//only longs allowed
 		 try {
 			 long num = Long.parseLong(document.getCardId());
@@ -2375,7 +2375,7 @@ public class Api2OpenAsnEncoder implements Api2AsnEncoder {
 			throw new EncodingFormatException("Extension does not include data");
 		}
 
-		if (extension.getId() == null || extension.getId().length() == 0) {
+		if (extension.getId() == null || extension.getId().isEmpty()) {
 			throw new EncodingFormatException("Extension does not include id");
 		}
 		
diff --git a/src/main/java/org/uic/barcode/ticket/api/utils/Api2OpenAsnEncoderV2.java b/src/main/java/org/uic/barcode/ticket/api/utils/Api2OpenAsnEncoderV2.java
index 0656d49..41a70a0 100644
--- a/src/main/java/org/uic/barcode/ticket/api/utils/Api2OpenAsnEncoderV2.java
+++ b/src/main/java/org/uic/barcode/ticket/api/utils/Api2OpenAsnEncoderV2.java
@@ -18,6 +18,7 @@ import org.uic.barcode.ticket.api.asn.omv2.CardReferenceType;
 import org.uic.barcode.ticket.api.asn.omv2.CodeTableType;
 import org.uic.barcode.ticket.api.asn.omv2.CompartmentDetailsType;
 import org.uic.barcode.ticket.api.asn.omv2.CompartmentGenderType;
+import org.uic.barcode.ticket.api.asn.omv2.CompartmentPositionType;
 import org.uic.barcode.ticket.api.asn.omv2.ConfirmationTypeType;
 import org.uic.barcode.ticket.api.asn.omv2.ControlData;
 import org.uic.barcode.ticket.api.asn.omv2.CountermarkData;
@@ -94,7 +95,6 @@ import org.uic.barcode.ticket.api.asn.omv2.VatDetailType;
 import org.uic.barcode.ticket.api.asn.omv2.ViaStationType;
 import org.uic.barcode.ticket.api.asn.omv2.VoucherData;
 import org.uic.barcode.ticket.api.asn.omv2.ZoneType;
-import org.uic.barcode.ticket.api.asn.omv2.CompartmentPositionType;
 import org.uic.barcode.ticket.api.spec.IBerth;
 import org.uic.barcode.ticket.api.spec.ICarCarriageReservation;
 import org.uic.barcode.ticket.api.spec.ICardReference;
@@ -745,7 +745,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 		}
 
 	
-		if (document.getTariffs() != null && document.getTariffs().size() > 0){
+		if (document.getTariffs() != null && !document.getTariffs().isEmpty()){
 			asnData.setTariffs(encodeTariffCollection(document.getTariffs()));
 		}
 		
@@ -753,7 +753,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 			asnData.setClassCode(TravelClassType.valueOf(document.getClassCode().name()));
 		}
 		
-		if (document.getServiceLevel() != null && document.getServiceLevel().length() > 0) {
+		if (document.getServiceLevel() != null && !document.getServiceLevel().isEmpty()) {
 			asnData.setServiceLevel(document.getServiceLevel());
 		}
 		
@@ -765,7 +765,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 			asnData.setIssuerAutorizationId(Long.valueOf(document.getAuthorizationCode()));
 		}
 
-		if (document.getValidRegionList()!= null && document.getValidRegionList().size() > 0) {
+		if (document.getValidRegionList()!= null && !document.getValidRegionList().isEmpty()) {
 			asnData.setValidRegion(encodeRegionCollection(document.getValidRegionList(), issuingDate));
 		}
 
@@ -795,11 +795,11 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 		asnData.setFromStationNameUTF8(route.getFromStationName());
 		asnData.setToStationNameUTF8(route.getToStationName());		
 		
-		if (route.getValidRegionList()!= null && route.getValidRegionList().size() > 0) {
+		if (route.getValidRegionList()!= null && !route.getValidRegionList().isEmpty()) {
 			asnData.setValidReturnRegion(encodeRegionCollection(route.getValidRegionList(), issuingDate));
 		}
 		
-		if (route.getValidRegionDesc() != null && route.getValidRegionDesc().length() > 0){
+		if (route.getValidRegionDesc() != null && !route.getValidRegionDesc().isEmpty()){
 			asnData.setValidReturnRegionDesc(route.getValidRegionDesc());
 		}
 		
@@ -823,7 +823,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 
 		asnData.setMaxNonHandLuggagePieces(UicEncoderUtils.getRestrictedIntWithDefault(luggageRestriction.getMaxNonHandLuggagePieces(),1,99,1));
 				
-		if (luggageRestriction.getRegisteredLuggage() != null && luggageRestriction.getRegisteredLuggage().size() > 0) {
+		if (luggageRestriction.getRegisteredLuggage() != null && !luggageRestriction.getRegisteredLuggage().isEmpty()) {
 			asnData.setRegisteredLuggage(encodeRegisteredLuggage(luggageRestriction.getRegisteredLuggage()));
 		}
 		
@@ -933,7 +933,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 			asnData.setClassCode(TravelClassType.valueOf(document.getClassCode().name()));
 		}
 		
-		if (document.getServiceLevel() != null && document.getServiceLevel().length() > 0) {
+		if (document.getServiceLevel() != null && !document.getServiceLevel().isEmpty()) {
 			asnData.setServiceLevel(document.getServiceLevel());
 		}
 		
@@ -945,12 +945,12 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 			asnData.setIssuerAutorizationId(Long.valueOf(document.getAuthorizationCode()));
 		}
 
-		if (document.getValidRegionList() != null && document.getValidRegionList().size() > 0) {
+		if (document.getValidRegionList() != null && !document.getValidRegionList().isEmpty()) {
 			asnData.setValidRegion(encodeRegionCollection(document.getValidRegionList(), issuingDate));
 		}		
 		asnData.setValidRegionDesc(document.getValidRegionDesc());
 		
-		if (document.getIncludedAddOns() != null && document.getIncludedAddOns().size() > 0) {
+		if (document.getIncludedAddOns() != null && !document.getIncludedAddOns().isEmpty()) {
 			asnData.setIncludedAddOns(encodeIncludedAddons(document.getIncludedAddOns(),issuingDate, document.getClassCode()));
 		}
 		
@@ -1061,7 +1061,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 		asnData.setExcludedServiceBrands(SequenceOfServiceBrands.getSequence(UicEncoderUtils.encodeRestrictedIntegerCollection(document.getExcludedServiceBrands(),1,32000)));		
 		asnData.setIncludedServiceBrands(SequenceOfServiceBrands.getSequence(UicEncoderUtils.encodeRestrictedIntegerCollection(document.getIncludedServiceBrands(),1,32000)));			
 				
-		if (document.getValidRegionList() != null && document.getValidRegionList().size() > 0) {
+		if (document.getValidRegionList() != null && !document.getValidRegionList().isEmpty()) {
 			asnData.setValidRegion(encodeRegionCollection(document.getValidRegionList(), issuingDate));
 		}
 		asnData.setValidRegionDesc(document.getValidRegionDesc());
@@ -1189,7 +1189,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 			asnData.setCity(Asn1BigInteger.toAsn1(document.getCity()));
 		}
 		
-		if (document.getNUTScode() != null && document.getNUTScode().length() > 0) {
+		if (document.getNUTScode() != null && !document.getNUTScode().isEmpty()) {
 			asnData.setNutsCode(document.getNUTScode());			
 		}
 		
@@ -1235,9 +1235,8 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 	 *
 	 * @param data the data
 	 * @return the polygone type
-	 * @throws EncodingFormatException the encoding format exception
 	 */
-	private PolygoneType encodePolygone(IPolygone data) throws EncodingFormatException {
+    private PolygoneType encodePolygone(IPolygone data) {
 		if (data == null) return null;	
 		if (data.getEdges() == null || data.getEdges().isEmpty()) {
 			return null;
@@ -1642,7 +1641,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 		if (document.getClassCode() != null) {
 			asnData.setClassCode(TravelClassType.valueOf(document.getClassCode().name()));
 		}
-		if (document.getCountries() != null && document.getCountries().size() > 0){
+        if (document.getCountries() != null && !document.getCountries().isEmpty()){
 			asnData.setCountries(SequenceOfCountries.getSequence(UicEncoderUtils.encodeRestrictedIntegerCollection(document.getCountries(),1,250)));
 		}
 
@@ -1661,7 +1660,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 		
 
 		
-		if(document.getValidRegionList()!= null && document.getValidRegionList().size() > 0) {
+		if(document.getValidRegionList()!= null && !document.getValidRegionList().isEmpty()) {
 			asnData.setValidRegion(encodeRegionCollection(document.getValidRegionList(), issuingDate));
 		}		
 		
@@ -1684,7 +1683,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 	}	
 	
 	
-	private ValidityPeriodDetailType encodeValidityDetails(	IValidityDetails validityDetails, Date referenceDate) throws EncodingFormatException {
+    private ValidityPeriodDetailType encodeValidityDetails(IValidityDetails validityDetails, Date referenceDate) {
 		
 		if ( (validityDetails.getTimeRanges() == null || validityDetails.getTimeRanges().isEmpty())
 				||
@@ -1832,7 +1831,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 			for (String station : document.getStations()) {
 				String ia5 = UicEncoderUtils.getIA5NonNum(station);
 				Long num = UicEncoderUtils.getNum(station);
-				if (ia5 != null && ia5.length() > 0) {
+				if (ia5 != null && !ia5.isEmpty()) {
 					stationsIA5.add(ia5);
 				}
 				if (num != null && num > 0){
@@ -1851,7 +1850,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 			
 			SequenceOfStringUTF8 asnList = new SequenceOfStringUTF8();
 			for ( String text  :document.getStationNames()){
-				if (text.length() > 0) {
+				if (!text.isEmpty()) {
 					asnList.add(text);
 				}
 			}
@@ -1967,7 +1966,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 			
 			CardReferenceType asnCard = new CardReferenceType();
 			
-			if (card.getCardId() != null && card.getCardId().length() > 0){
+			if (card.getCardId() != null && !card.getCardId().isEmpty()){
 				//only longs allowed
 				 try {
 					 long num = Long.parseLong(card.getCardId());
@@ -2104,7 +2103,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 	private IssuingData encodeIssuingDetails(IIssuingDetail data) throws EncodingFormatException {
 		
 		if (data == null){
-			throw new EncodingFormatException("Issuind data missing");
+			throw new EncodingFormatException("Issuing data missing");
 		}
 		
 		IssuingData asnData = new IssuingData();
@@ -2220,7 +2219,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 		asnDocument.getTicket().setCustomerCard(asnCustomerCard);		
 		
 		
-		if (document.getCardId() != null && document.getCardId().length() > 0){
+		if (document.getCardId() != null && !document.getCardId().isEmpty()){
 		//only longs allowed
 		 try {
 			 long num = Long.parseLong(document.getCardId());
@@ -2381,7 +2380,7 @@ public class Api2OpenAsnEncoderV2 implements Api2AsnEncoder {
 			throw new EncodingFormatException("Extension does not include data");
 		}
 
-		if (extension.getId() == null || extension.getId().length() == 0) {
+		if (extension.getId() == null || extension.getId().isEmpty()) {
 			throw new EncodingFormatException("Extension does not include id");
 		}
 		
diff --git a/src/main/java/org/uic/barcode/ticket/api/utils/Api2OpenAsnEncoderV3.java b/src/main/java/org/uic/barcode/ticket/api/utils/Api2OpenAsnEncoderV3.java
index d97e7b7..3224336 100644
--- a/src/main/java/org/uic/barcode/ticket/api/utils/Api2OpenAsnEncoderV3.java
+++ b/src/main/java/org/uic/barcode/ticket/api/utils/Api2OpenAsnEncoderV3.java
@@ -11,7 +11,6 @@ import org.uic.barcode.asn1.datatypesimpl.SequenceOfStringIA5;
 import org.uic.barcode.asn1.datatypesimpl.SequenceOfStringUTF8;
 import org.uic.barcode.asn1.datatypesimpl.SequenceOfUnrestrictedLong;
 import org.uic.barcode.ticket.EncodingFormatException;
-import org.uic.barcode.ticket.api.asn.omv3.CompartmentPositionType;
 import org.uic.barcode.ticket.api.asn.omv3.BerthDetailData;
 import org.uic.barcode.ticket.api.asn.omv3.BerthTypeType;
 import org.uic.barcode.ticket.api.asn.omv3.BoardingOrArrivalType;
@@ -20,6 +19,7 @@ import org.uic.barcode.ticket.api.asn.omv3.CardReferenceType;
 import org.uic.barcode.ticket.api.asn.omv3.CodeTableType;
 import org.uic.barcode.ticket.api.asn.omv3.CompartmentDetailsType;
 import org.uic.barcode.ticket.api.asn.omv3.CompartmentGenderType;
+import org.uic.barcode.ticket.api.asn.omv3.CompartmentPositionType;
 import org.uic.barcode.ticket.api.asn.omv3.ConfirmationTypeType;
 import org.uic.barcode.ticket.api.asn.omv3.ControlData;
 import org.uic.barcode.ticket.api.asn.omv3.CountermarkData;
@@ -749,7 +749,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 		}
 
 	
-		if (document.getTariffs() != null && document.getTariffs().size() > 0){
+		if (document.getTariffs() != null && !document.getTariffs().isEmpty()){
 			asnData.setTariffs(encodeTariffCollection(document.getTariffs()));
 		}
 		
@@ -757,7 +757,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 			asnData.setClassCode(TravelClassType.valueOf(document.getClassCode().name()));
 		}
 		
-		if (document.getServiceLevel() != null && document.getServiceLevel().length() > 0) {
+		if (document.getServiceLevel() != null && !document.getServiceLevel().isEmpty()) {
 			asnData.setServiceLevel(document.getServiceLevel());
 		}
 		
@@ -769,7 +769,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 			asnData.setIssuerAutorizationId(Long.valueOf(document.getAuthorizationCode()));
 		}
 
-		if (document.getValidRegionList()!= null && document.getValidRegionList().size() > 0) {
+		if (document.getValidRegionList()!= null && !document.getValidRegionList().isEmpty()) {
 			asnData.setValidRegion(encodeRegionCollection(document.getValidRegionList(), issuingDate));
 		}
 		
@@ -801,11 +801,11 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 		asnData.setFromStationNameUTF8(route.getFromStationName());
 		asnData.setToStationNameUTF8(route.getToStationName());		
 		
-		if (route.getValidRegionList()!= null && route.getValidRegionList().size() > 0) {
+		if (route.getValidRegionList()!= null && !route.getValidRegionList().isEmpty()) {
 			asnData.setValidReturnRegion(encodeRegionCollection(route.getValidRegionList(), issuingDate));
 		}
 		
-		if (route.getValidRegionDesc() != null && route.getValidRegionDesc().length() > 0){
+		if (route.getValidRegionDesc() != null && !route.getValidRegionDesc().isEmpty()){
 			asnData.setValidReturnRegionDesc(route.getValidRegionDesc());
 		}
 		
@@ -829,7 +829,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 
 		asnData.setMaxNonHandLuggagePieces(UicEncoderUtils.getRestrictedIntWithDefault(luggageRestriction.getMaxNonHandLuggagePieces(),1,99,1));
 				
-		if (luggageRestriction.getRegisteredLuggage() != null && luggageRestriction.getRegisteredLuggage().size() > 0) {
+		if (luggageRestriction.getRegisteredLuggage() != null && !luggageRestriction.getRegisteredLuggage().isEmpty()) {
 			asnData.setRegisteredLuggage(encodeRegisteredLuggage(luggageRestriction.getRegisteredLuggage()));
 		}
 		
@@ -940,7 +940,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 			asnData.setClassCode(TravelClassType.valueOf(document.getClassCode().name()));
 		}
 		
-		if (document.getServiceLevel() != null && document.getServiceLevel().length() > 0) {
+		if (document.getServiceLevel() != null && !document.getServiceLevel().isEmpty()) {
 			asnData.setServiceLevel(document.getServiceLevel());
 		}
 		
@@ -952,12 +952,12 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 			asnData.setIssuerAutorizationId(Long.valueOf(document.getAuthorizationCode()));
 		}
 
-		if (document.getValidRegionList() != null && document.getValidRegionList().size() > 0) {
+		if (document.getValidRegionList() != null && !document.getValidRegionList().isEmpty()) {
 			asnData.setValidRegion(encodeRegionCollection(document.getValidRegionList(), issuingDate));
 		}		
 		asnData.setValidRegionDesc(document.getValidRegionDesc());
 		
-		if (document.getIncludedAddOns() != null && document.getIncludedAddOns().size() > 0) {
+		if (document.getIncludedAddOns() != null && !document.getIncludedAddOns().isEmpty()) {
 			asnData.setIncludedAddOns(encodeIncludedAddons(document.getIncludedAddOns(),issuingDate, document.getClassCode()));
 		}
 		
@@ -1070,7 +1070,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 		asnData.setExcludedServiceBrands(SequenceOfServiceBrands.getSequence(UicEncoderUtils.encodeRestrictedIntegerCollection(document.getExcludedServiceBrands(),1,32000)));		
 		asnData.setIncludedServiceBrands(SequenceOfServiceBrands.getSequence(UicEncoderUtils.encodeRestrictedIntegerCollection(document.getIncludedServiceBrands(),1,32000)));			
 				
-		if (document.getValidRegionList() != null && document.getValidRegionList().size() > 0) {
+		if (document.getValidRegionList() != null && !document.getValidRegionList().isEmpty()) {
 			asnData.setValidRegion(encodeRegionCollection(document.getValidRegionList(), issuingDate));
 		}
 		asnData.setValidRegionDesc(document.getValidRegionDesc());
@@ -1201,7 +1201,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 			asnData.setCity(Asn1BigInteger.toAsn1(document.getCity()));
 		}
 		
-		if (document.getNUTScode() != null && document.getNUTScode().length() > 0) {
+		if (document.getNUTScode() != null && !document.getNUTScode().isEmpty()) {
 			asnData.setNutsCode(document.getNUTScode());			
 		}
 		
@@ -1247,9 +1247,8 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 	 *
 	 * @param data the data
 	 * @return the polygone type
-	 * @throws EncodingFormatException the encoding format exception
-	 */
-	private PolygoneType encodePolygone(IPolygone data) throws EncodingFormatException {
+     */
+	private PolygoneType encodePolygone(IPolygone data) {
 		if (data == null) return null;	
 		if (data.getEdges() == null || data.getEdges().isEmpty()) {
 			return null;
@@ -1651,7 +1650,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 		if (document.getClassCode() != null) {
 			asnData.setClassCode(TravelClassType.valueOf(document.getClassCode().name()));
 		}
-		if (document.getCountries() != null && document.getCountries().size() > 0){
+		if (document.getCountries() != null && !document.getCountries().isEmpty()){
 			asnData.setCountries(SequenceOfCountries.getSequence(UicEncoderUtils.encodeRestrictedIntegerCollection(document.getCountries(),1,250)));
 		}
 
@@ -1670,7 +1669,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 		
 
 		
-		if(document.getValidRegionList()!= null && document.getValidRegionList().size() > 0) {
+		if(document.getValidRegionList()!= null && !document.getValidRegionList().isEmpty()) {
 			asnData.setValidRegion(encodeRegionCollection(document.getValidRegionList(), issuingDate));
 		}		
 		
@@ -1729,7 +1728,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 	}
 
 
-	private ValidityPeriodDetailType encodeValidityDetails(	IValidityDetails validityDetails, Date referenceDate) throws EncodingFormatException {
+    private ValidityPeriodDetailType encodeValidityDetails(IValidityDetails validityDetails, Date referenceDate) {
 		
 		if ( (validityDetails.getTimeRanges() == null || validityDetails.getTimeRanges().isEmpty())
 				||
@@ -1877,7 +1876,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 			for (String station : document.getStations()) {
 				String ia5 = UicEncoderUtils.getIA5NonNum(station);
 				Long num = UicEncoderUtils.getNum(station);
-				if (ia5 != null && ia5.length() > 0) {
+				if (ia5 != null && !ia5.isEmpty()) {
 					stationsIA5.add(ia5);
 				}
 				if (num != null && num > 0){
@@ -1896,7 +1895,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 			
 			SequenceOfStringUTF8 asnList = new SequenceOfStringUTF8();
 			for ( String text  :document.getStationNames()){
-				if (text.length() > 0) {
+				if (!text.isEmpty()) {
 					asnList.add(text);
 				}
 			}
@@ -2012,7 +2011,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 			
 			CardReferenceType asnCard = new CardReferenceType();
 			
-			if (card.getCardId() != null && card.getCardId().length() > 0){
+			if (card.getCardId() != null && !card.getCardId().isEmpty()){
 				//only longs allowed
 				 try {
 					 long num = Long.parseLong(card.getCardId());
@@ -2150,7 +2149,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 	private IssuingData encodeIssuingDetails(IIssuingDetail data) throws EncodingFormatException {
 		
 		if (data == null){
-			throw new EncodingFormatException("Issuind data missing");
+			throw new EncodingFormatException("Issuing data missing");
 		}
 		
 		IssuingData asnData = new IssuingData();
@@ -2266,7 +2265,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 		asnDocument.getTicket().setCustomerCard(asnCustomerCard);		
 		
 		
-		if (document.getCardId() != null && document.getCardId().length() > 0){
+		if (document.getCardId() != null && !document.getCardId().isEmpty()){
 		//only longs allowed
 		 try {
 			 long num = Long.parseLong(document.getCardId());
@@ -2425,7 +2424,7 @@ public class Api2OpenAsnEncoderV3 implements Api2AsnEncoder {
 			throw new EncodingFormatException("Extension does not include data");
 		}
 
-		if (extension.getId() == null || extension.getId().length() == 0) {
+		if (extension.getId() == null || extension.getId().isEmpty()) {
 			throw new EncodingFormatException("Extension does not include id");
 		}
 		
diff --git a/src/main/java/org/uic/barcode/utils/AlgorithmNameResolver.java b/src/main/java/org/uic/barcode/utils/AlgorithmNameResolver.java
index 16cd638..cac2bc7 100644
--- a/src/main/java/org/uic/barcode/utils/AlgorithmNameResolver.java
+++ b/src/main/java/org/uic/barcode/utils/AlgorithmNameResolver.java
@@ -8,7 +8,11 @@ import java.util.HashMap;
 /**
  * The Class AlgorithmNameResolver.
  */
-public class AlgorithmNameResolver {
+public final class AlgorithmNameResolver {
+
+	private AlgorithmNameResolver() {
+		// Utility class will not be instantiated.
+	}
 	
 	
 	/** The Constant TYPE_KEY_GENERATOR_ALG. */
@@ -22,7 +26,7 @@ public class AlgorithmNameResolver {
 	
 	
 	/**
-	 * Adds an entry for a mapping of algorithm type and oid to an algorithm name
+	 * Adds an entry for a mapping of an algorithm type and oid to an algorithm name
 	 *
 	 * @param type the algorithm type
 	 * @param oid the algorithm OID
@@ -123,7 +127,7 @@ public class AlgorithmNameResolver {
  		    	 name = service.getAlgorithm();
  		     }
     		 
-    		 if (name != null && name.length() > 0) {
+    		 if (name != null && !name.isEmpty()) {
     			 return name;
     		 }
     	}
@@ -135,7 +139,7 @@ public class AlgorithmNameResolver {
  		       if (service != null) {
  		    	 name = service.getAlgorithm();
  		       }		    	    		    		 
- 		       if (name != null && name.length() > 0) {
+ 		       if (name != null && !name.isEmpty()) {
  		    	 return name;
  		       }
  		}
-- 
cgit v1.2.3