chore: Fix some compiler warnings.

Signed-off-by: Markus Sabadello <[email protected]>

Author: peacekeeper

src/main/java/com/danubetech/verifiablecredentials/VerifiableCredential.java

@@ -80,6 +80,7 @@ public static VerifiableCredential fromJsonLdObject(LinkedHashMap<String, Object
 		return fromJsonLdObject(jsonLdObject, true);
 	}
 
+	@SuppressWarnings("unchecked")
 	public static VerifiableCredential fromJsonString(String jsonString, boolean validate) throws JsonParseException, IOException {
 
 		LinkedHashMap<String, Object> jsonLdObject = (LinkedHashMap<String, Object>) JsonUtils.fromString(jsonString);
@@ -151,6 +152,7 @@ public void setCredentialSubject(String subject) {
 			this.getJsonLdCredentialSubject().put(JSONLD_TERM_ID, subject);
 	}
 
+	@SuppressWarnings("unchecked")
 	public List<String> getContext() {
 
 		return (List<String>) this.jsonLdObject.get(JsonLdConsts.CONTEXT);
@@ -164,6 +166,7 @@ public void setContext(List<String> context) {
 			this.jsonLdObject.put(JsonLdConsts.CONTEXT, context);
 	}
 
+	@SuppressWarnings("unchecked")
 	public List<String> getType() {
 
 		Object object = this.jsonLdObject.get(JSONLD_TERM_TYPE);

src/main/java/com/danubetech/verifiablecredentials/VerifiablePresentation.java

@@ -57,6 +57,7 @@ public static VerifiablePresentation fromJsonLdObject(LinkedHashMap<String, Obje
 		return fromJsonLdObject(jsonLdObject, true);
 	}
 
+	@SuppressWarnings("unchecked")
 	public static VerifiablePresentation fromJsonString(String jsonString, boolean validate) throws JsonParseException, IOException {
 
 		LinkedHashMap<String, Object> jsonLdObject = (LinkedHashMap<String, Object>) JsonUtils.fromString(jsonString);
@@ -121,6 +122,7 @@ public static VerifiablePresentation fromJwtVerifiableCredential(JwtVerifiableCr
 		return fromJwtVerifiableCredential(jwtVerifiableCredential, true);
 	}
 
+	@SuppressWarnings("unchecked")
 	public VerifiableCredential getVerifiableCredential() {
 
 		Object verifiableCredentialObject = this.getJsonLdObject().get(JSONLD_TERM_VERIFIABLE_CREDENTIAL);

src/main/java/com/danubetech/verifiablecredentials/jwt/JwtObject.java

@@ -166,6 +166,8 @@ public boolean verify_P256K_ES256K(com.nimbusds.jose.jwk.ECKey publicKey) throws
 
 	private static class EscapedSlashWorkaroundJWSObject extends JWSObject {
 
+		private static final long serialVersionUID = -587898962717783109L;
+
 		public EscapedSlashWorkaroundJWSObject(final JWSHeader header, final JWTClaimsSet claimsSet) {
 
 			super(header, new Payload(claimsSet.toJSONObject().toJSONString().replace("\\/", "/")));

src/main/java/com/danubetech/verifiablecredentials/w3ctestsuite/Generator.java

@@ -153,6 +153,8 @@ static String readInput(File input) throws Exception {
 		String line;
 		while ((line = reader.readLine()) != null) buffer.append(line);
 
+		reader.close();
+
 		return buffer.toString();
 	}
 }