diff --git a/src/main/java/org/eclipse/tractusx/ssi/lib/crypt/IKey.java b/src/main/java/org/eclipse/tractusx/ssi/lib/crypt/IKey.java
index b2909e29..d67cd5c9 100644
--- a/src/main/java/org/eclipse/tractusx/ssi/lib/crypt/IKey.java
+++ b/src/main/java/org/eclipse/tractusx/ssi/lib/crypt/IKey.java
@@ -33,8 +33,21 @@ public interface IKey {
    */
   int getKeyLength();
 
+  /**
+   * As string for storing purpose.
+   *
+   * @return the string
+   * @throws KeyTransformationException the key transformation exception
+   */
   String asStringForStoring() throws KeyTransformationException;
 
+  /**
+   * As string for exchange purpose.
+   *
+   * @param encodeType the encode type
+   * @return the string
+   * @throws KeyTransformationException the key transformation exception
+   */
   String asStringForExchange(EncodeType encodeType) throws KeyTransformationException;
 
   /**
diff --git a/src/main/java/org/eclipse/tractusx/ssi/lib/did/web/util/DidWebParser.java b/src/main/java/org/eclipse/tractusx/ssi/lib/did/web/util/DidWebParser.java
index 763b9465..73aecce2 100644
--- a/src/main/java/org/eclipse/tractusx/ssi/lib/did/web/util/DidWebParser.java
+++ b/src/main/java/org/eclipse/tractusx/ssi/lib/did/web/util/DidWebParser.java
@@ -34,10 +34,25 @@ public class DidWebParser {
   private static final String WELL_KNOWN_DID_JSON = "/.well-known/did.json";
   private static final String PATH_DID_JSON = "/did.json";
 
+  /**
+   * Parse uri.
+   *
+   * @param did the did
+   * @return the uri
+   * @throws DidParseException the did parse exception
+   */
   public URI parse(Did did) throws DidParseException {
     return parse(did, true);
   }
 
+  /**
+   * Parse uri.
+   *
+   * @param did the did
+   * @param enforceHttps the enforce https
+   * @return the uri
+   * @throws DidParseException the did parse exception
+   */
   public URI parse(Did did, boolean enforceHttps) throws DidParseException {
     if (!did.getMethod().equals(Constants.DID_WEB_METHOD)) {
       throw new DidParseException(
diff --git a/src/main/java/org/eclipse/tractusx/ssi/lib/jwt/SignedJwtFactory.java b/src/main/java/org/eclipse/tractusx/ssi/lib/jwt/SignedJwtFactory.java
index 3199db16..e2ad9e64 100644
--- a/src/main/java/org/eclipse/tractusx/ssi/lib/jwt/SignedJwtFactory.java
+++ b/src/main/java/org/eclipse/tractusx/ssi/lib/jwt/SignedJwtFactory.java
@@ -117,10 +117,8 @@ private static SignedJWT createSignedES256Jwt(
       var algorithm = JWSAlgorithm.EdDSA;
       var type = JOSEObjectType.JWT;
 
-      JWSHeader.Builder jwsHeaderBuilder = new JWSHeader.Builder(algorithm);
-      jwsHeaderBuilder.type(type);
-      jwsHeaderBuilder.keyID(issuer);
-      jwsHeaderBuilder.base64URLEncodePayload(true);
+      JWSHeader.Builder jwsHeaderBuilder =
+          new JWSHeader.Builder(algorithm).type(type).keyID(issuer).base64URLEncodePayload(true);
 
       var header = jwsHeaderBuilder.build();
       var vc = new SignedJWT(header, claimsSet);