hypfvieh · hypfvieh · Jan 12, 2026 · Jan 12, 2026
diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/Marshalling.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/Marshalling.java
@@ -214,7 +214,7 @@ private static String[] recursiveGetDBusType(StringBuffer[] _out, Type _dataType
                 throw new DBusException(ERROR_MULTI_VALUED_ARRAY);
             }
             _out[_level].append(s[0]);
-        } else if (_dataType instanceof Class<?> && DBusSerializable.class.isAssignableFrom((Class<?>) _dataType)
+        } else if (_dataType instanceof Class<?> dtClazz && DBusSerializable.class.isAssignableFrom(dtClazz)
             || _dataType instanceof ParameterizedType pt
                 && DBusSerializable.class.isAssignableFrom((Class<?>) pt.getRawType())) {
             // it's a custom serializable type
@@ -395,12 +395,12 @@ public static int getJavaType(String _dbusType, List<Type> _resultValue, int _li
                     if (ArgumentType.DICT_ENTRY1 == _dbusType.charAt(idx + 1)) {
                         contained = new ArrayList<>();
                         int javaType = getJavaType(_dbusType.substring(idx + 2), contained, 2);
-                        _resultValue.add(new DBusMapType(contained.get(0), contained.get(1)));
+                        _resultValue.add(new DBusMapType(contained.getFirst(), contained.get(1)));
                         idx += javaType + 2;
                     } else {
                         contained = new ArrayList<>();
                         int javaType = getJavaType(_dbusType.substring(idx + 1), contained, 1);
-                        _resultValue.add(new DBusListType(contained.get(0)));
+                        _resultValue.add(new DBusListType(contained.getFirst()));
                         idx += javaType;
                     }
                     break;
@@ -452,7 +452,7 @@ public static int getJavaType(String _dbusType, List<Type> _resultValue, int _li
                 case ArgumentType.DICT_ENTRY1:
                     contained = new ArrayList<>();
                     int javaType = getJavaType(_dbusType.substring(idx + 1), contained, 2);
-                    _resultValue.add(new DBusMapType(contained.get(0), contained.get(1)));
+                    _resultValue.add(new DBusMapType(contained.getFirst(), contained.get(1)));
                     idx += javaType + 1;
                     break;
                 default:
@@ -577,33 +577,33 @@ static Object deSerializeParameter(Object _parameter, Type _type, AbstractConnec
         }
 
         // Turn a signature into a Type[]
-        if (_type instanceof Class && ((Class<?>) _type).isArray() && ((Class<?>) _type).getComponentType().equals(Type.class) && parameter instanceof String) {
+        if (_type instanceof Class<?> tClazz && tClazz.isArray() && tClazz.getComponentType().equals(Type.class) && parameter instanceof String str) {
             List<Type> rv = new ArrayList<>();
-            getJavaType((String) parameter, rv, -1);
+            getJavaType(str, rv, -1);
             parameter = rv.toArray(EMPTY_TYPE_ARRAY);
         }
 
         if (parameter instanceof DBusPath op) {
             LOGGER.trace("Parameter is DBusPath");
-            if (_type instanceof Class && DBusInterface.class.isAssignableFrom((Class<?>) _type)) {
+            if (_type instanceof Class<?> tClazz && DBusInterface.class.isAssignableFrom(tClazz)) {
                 parameter = _conn.getExportedObject(op.getSource(), op.getPath(), (Class<DBusInterface>) _type);
             } else {
                 parameter = new DBusPath(op.getPath());
             }
         }
 
         // its an enum, parse either as the string name or the ordinal
-        if (parameter instanceof String str && _type instanceof Class && Enum.class.isAssignableFrom((Class<?>) _type)) {
+        if (parameter instanceof String str && _type instanceof Class<?> tClazz && Enum.class.isAssignableFrom(tClazz)) {
             LOGGER.trace("Type seems to be an enum");
             parameter = Enum.valueOf((Class<Enum>) _type, str);
         }
 
         // it should be a struct. create it
-        if (parameter instanceof Object[] objArr && _type instanceof Class && Struct.class.isAssignableFrom((Class<?>) _type)) {
+        if (parameter instanceof Object[] objArr && _type instanceof Class<?> tClazz && Struct.class.isAssignableFrom(tClazz)) {
             LOGGER.trace("Creating Struct {} from {}", _type, parameter);
             Type[] ts = Container.getTypeCache(_type);
             if (ts == null) {
-                Field[] fs = ((Class<?>) _type).getDeclaredFields();
+                Field[] fs = tClazz.getDeclaredFields();
                 ts = new Type[fs.length];
                 for (Field f : fs) {
                     Position p = f.getAnnotation(Position.class);
@@ -617,7 +617,7 @@ static Object deSerializeParameter(Object _parameter, Type _type, AbstractConnec
 
             // recurse over struct contents
             parameter = deSerializeParameters(objArr, ts, _conn);
-            for (Constructor<?> con : ((Class<?>) _type).getDeclaredConstructors()) {
+            for (Constructor<?> con : tClazz.getDeclaredConstructors()) {
                 try {
                     LOGGER.trace("Trying to create instance of {} using constructor {} with parameters: {}", _type, con, objArr);
                     parameter = con.newInstance(objArr);
@@ -778,8 +778,8 @@ public static Object[] deSerializeParameters(Object[] _parameters, Type[] _types
                 continue;
             }
 
-            if (types[i] instanceof Class
-                    && DBusSerializable.class.isAssignableFrom((Class<? extends Object>) types[i])
+            if (types[i] instanceof Class<? extends Object> tClazz
+                    && DBusSerializable.class.isAssignableFrom(tClazz)
                 || types[i] instanceof ParameterizedType pt
                     && DBusSerializable.class.isAssignableFrom((Class<? extends Object>) pt.getRawType())) {
                 Class<? extends DBusSerializable> dsc;

diff --git a/...va-core/src/main/java/org/freedesktop/dbus/connections/base/DBusBoundPropertyHandler.java b/...va-core/src/main/java/org/freedesktop/dbus/connections/base/DBusBoundPropertyHandler.java
@@ -155,8 +155,8 @@ protected PropHandled handleGetAll(ExportedObject _exportObject, final MethodCal
                 } catch (Throwable _ex) {
                     getLogger().debug("Failed to invoke method call", _ex);
                     handleException(_methodCall,
-                        new DBusExecutionException(String.format("Error Executing Method %s.%s: %s",
-                        _methodCall.getInterface(), _methodCall.getName(), _ex.getMessage()), _ex));
+                        new DBusExecutionException("Error Executing Method %s.%s: %s".formatted(
+                            _methodCall.getInterface(), _methodCall.getName(), _ex.getMessage()), _ex));
                 }
             });
             return PropHandled.HANDLED;

diff --git a/.../src/main/java/org/freedesktop/dbus/connections/config/ReceivingServiceConfigBuilder.java b/.../src/main/java/org/freedesktop/dbus/connections/config/ReceivingServiceConfigBuilder.java
@@ -165,7 +165,7 @@ public ReceivingServiceConfigBuilder<R> withMethodReturnThreadPriority(int _prio
     /**
      * Use virtual threads for the created signal thread(s).
      * <p>
-     * Default: {@value false};
+     * Default: {@code false}
      *
      * @param _virtual true to use virtual threads, false to use native threads
      * @return this
@@ -180,7 +180,7 @@ public ReceivingServiceConfigBuilder<R> withVirtualSignalThreads(boolean _virtua
     /**
      * Use virtual threads for the created error thread(s).
      * <p>
-     * Default: {@value false};
+     * Default: {@code false}
      *
      * @param _virtual true to use virtual threads, false to use native threads
      * @return this
@@ -195,7 +195,7 @@ public ReceivingServiceConfigBuilder<R> withVirtualErrorThreads(boolean _virtual
     /**
      * Use virtual threads for the created method call thread(s).
      * <p>
-     * Default: {@value false};
+     * Default: {@code false}
      *
      * @param _virtual true to use virtual threads, false to use native threads
      * @return this
@@ -210,7 +210,7 @@ public ReceivingServiceConfigBuilder<R> withMethodCallSignalThreads(boolean _vir
     /**
      * Use virtual threads for the created method return thread(s).
      * <p>
-     * Default: {@value false};
+     * Default: {@code false}
      *
      * @param _virtual true to use virtual threads, false to use native threads
      * @return this
@@ -225,7 +225,7 @@ public ReceivingServiceConfigBuilder<R> withVirtualMethodReturnThreads(boolean _
     /**
      * Use virtual threads for all created thread(s).
      * <p>
-     * Default: {@value false};
+     * Default: {@code false}
      *
      * @param _virtual true to use virtual threads, false to use native threads
      * @return this

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/connections/impl/DBusConnection.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/connections/impl/DBusConnection.java
@@ -212,7 +212,7 @@ public <T extends DBusInterface> T dynamicProxy(String _source, String _path, Cl
             }
 
             RemoteObject ro = new RemoteObject(_source, _path, _type, false);
-            DBusInterface newi = (DBusInterface) Proxy.newProxyInstance(ifcs.get(0).getClassLoader(),
+            DBusInterface newi = (DBusInterface) Proxy.newProxyInstance(ifcs.getFirst().getClassLoader(),
                     ifcs.toArray(Class[]::new), new RemoteInvocationHandler(this, ro));
             getImportedObjects().put(newi, ro);
 
@@ -302,7 +302,7 @@ public void requestBusName(String _busname) throws DBusException {
      * @return unique name
      */
     public String getUniqueName() {
-        return doWithBusNamesAndReturn(bn -> bn.get(0));
+        return doWithBusNamesAndReturn(bn -> bn.getFirst());
     }
 
     /**

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/connections/impl/DirectConnection.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/connections/impl/DirectConnection.java
@@ -87,7 +87,7 @@ <T extends DBusInterface> T dynamicProxy(String _path, Class<T> _type) throws DB
             }
 
             RemoteObject ro = new RemoteObject(null, _path, _type, false);
-            DBusInterface newi = (DBusInterface) Proxy.newProxyInstance(ifcs.get(0).getClassLoader(), ifcs.toArray(EMPTY_CLASS_ARRAY), new RemoteInvocationHandler(this, ro));
+            DBusInterface newi = (DBusInterface) Proxy.newProxyInstance(ifcs.getFirst().getClassLoader(), ifcs.toArray(EMPTY_CLASS_ARRAY), new RemoteInvocationHandler(this, ro));
             getImportedObjects().put(newi, ro);
             return (T) newi;
         } catch (Exception _ex) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/AccessDenied.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/AccessDenied.java
@@ -2,10 +2,13 @@
 
 import org.freedesktop.dbus.exceptions.DBusExecutionException;
 
+import java.io.Serial;
+
 /**
  * Thrown if a message is denied due to a security policy
  */
 public class AccessDenied extends DBusExecutionException {
+    @Serial
     private static final long serialVersionUID = 368173196466740803L;
 
     public AccessDenied(String _message) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/InvalidMethodArgument.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/InvalidMethodArgument.java
@@ -2,10 +2,13 @@
 
 import org.freedesktop.dbus.exceptions.DBusExecutionException;
 
+import java.io.Serial;
+
 /**
  * Thrown if a arguments passed to the method are invalid
  */
 public class InvalidMethodArgument extends DBusExecutionException {
+    @Serial
     private static final long serialVersionUID = 2504012938615867394L;
 
     public InvalidMethodArgument(String _message) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/MatchRuleInvalid.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/MatchRuleInvalid.java
@@ -2,10 +2,13 @@
 
 import org.freedesktop.dbus.exceptions.DBusExecutionException;
 
+import java.io.Serial;
+
 /**
  * Thrown if the match rule is invalid
  */
 public class MatchRuleInvalid extends DBusExecutionException {
+    @Serial
     private static final long serialVersionUID = 6922529529288327323L;
 
     public MatchRuleInvalid(String _message) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/NoReply.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/NoReply.java
@@ -2,10 +2,13 @@
 
 import org.freedesktop.dbus.exceptions.DBusExecutionException;
 
+import java.io.Serial;
+
 /**
  * Thrown if there is no reply to a method call
  */
 public class NoReply extends DBusExecutionException {
+    @Serial
     private static final long serialVersionUID = 5280031560938871837L;
 
     public NoReply(String _message) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/NotSupported.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/NotSupported.java
@@ -2,10 +2,13 @@
 
 import org.freedesktop.dbus.exceptions.DBusExecutionException;
 
+import java.io.Serial;
+
 /**
  * Thrown if a called operation is not supported
  */
 public class NotSupported extends DBusExecutionException {
+    @Serial
     private static final long serialVersionUID = -3937521136197720266L;
 
     public NotSupported(String _message) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/PropertyReadOnly.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/PropertyReadOnly.java
@@ -2,10 +2,13 @@
 
 import org.freedesktop.dbus.exceptions.DBusExecutionException;
 
+import java.io.Serial;
+
 /**
  * Thrown if a attempt to edit read only property
  */
 public class PropertyReadOnly extends DBusExecutionException {
+    @Serial
     private static final long serialVersionUID = -8493757965292570003L;
 
     public PropertyReadOnly(String _message) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/ServiceUnknown.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/ServiceUnknown.java
@@ -2,10 +2,13 @@
 
 import org.freedesktop.dbus.exceptions.DBusExecutionException;
 
+import java.io.Serial;
+
 /**
  * Thrown if the requested service was not available
  */
 public class ServiceUnknown extends DBusExecutionException {
+    @Serial
     private static final long serialVersionUID = -8634413313381034023L;
 
     public ServiceUnknown(String _message) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/Timeout.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/Timeout.java
@@ -2,10 +2,13 @@
 
 import org.freedesktop.dbus.exceptions.DBusExecutionException;
 
+import java.io.Serial;
+
 /**
  * Thrown if a operation timed out
  */
 public class Timeout extends DBusExecutionException {
+    @Serial
     private static final long serialVersionUID = -1212844876312953745L;
 
     public Timeout(String _message) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/UnknownInterface.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/UnknownInterface.java
@@ -2,10 +2,13 @@
 
 import org.freedesktop.dbus.exceptions.DBusExecutionException;
 
+import java.io.Serial;
+
 /**
  * Thrown if a interface does not exist
  */
 public class UnknownInterface extends DBusExecutionException {
+    @Serial
     private static final long serialVersionUID = -6296696668185701195L;
 
     public UnknownInterface(String _message) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/UnknownMethod.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/UnknownMethod.java
@@ -2,10 +2,13 @@
 
 import org.freedesktop.dbus.exceptions.DBusExecutionException;
 
+import java.io.Serial;
+
 /**
  * Thrown if the method called was unknown on the remote object
  */
 public class UnknownMethod extends DBusExecutionException {
+    @Serial
     private static final long serialVersionUID = -6712037259368315246L;
 
     public UnknownMethod(String _message) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/UnknownObject.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/UnknownObject.java
@@ -2,10 +2,13 @@
 
 import org.freedesktop.dbus.exceptions.DBusExecutionException;
 
+import java.io.Serial;
+
 /**
  * Thrown if the object was unknown on a remote connection
  */
 public class UnknownObject extends DBusExecutionException {
+    @Serial
     private static final long serialVersionUID = 4951706443147828582L;
 
     public UnknownObject(String _message) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/UnknownProperty.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/errors/UnknownProperty.java
@@ -2,10 +2,13 @@
 
 import org.freedesktop.dbus.exceptions.DBusExecutionException;
 
+import java.io.Serial;
+
 /**
  * Thrown if a property does not exist in the interface
  */
 public class UnknownProperty extends DBusExecutionException {
+    @Serial
     private static final long serialVersionUID = 7993712944238574483L;
 
     public UnknownProperty(String _message) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/exceptions/AddressResolvingException.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/exceptions/AddressResolvingException.java
@@ -1,7 +1,10 @@
 package org.freedesktop.dbus.exceptions;
 
+import java.io.Serial;
+
 public class AddressResolvingException extends DBusExecutionException {
 
+    @Serial
     private static final long serialVersionUID = -1636993356304776163L;
 
     public AddressResolvingException(String _message) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/exceptions/AuthenticationException.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/exceptions/AuthenticationException.java
@@ -1,8 +1,10 @@
 package org.freedesktop.dbus.exceptions;
 
 import java.io.IOException;
+import java.io.Serial;
 
 public class AuthenticationException extends IOException {
+    @Serial
     private static final long serialVersionUID = 1L;
 
     public AuthenticationException(String _message, Throwable _cause) {

diff --git a/...va-core/src/main/java/org/freedesktop/dbus/exceptions/ClassOutsideOfPackageException.java b/...va-core/src/main/java/org/freedesktop/dbus/exceptions/ClassOutsideOfPackageException.java
@@ -1,10 +1,13 @@
 package org.freedesktop.dbus.exceptions;
 
+import java.io.Serial;
+
 /**
  * @since 5.1.1 - 2024-11-16
  * @author hypfvieh
  */
 public class ClassOutsideOfPackageException extends DBusException {
+    @Serial
     private static final long serialVersionUID = 1L;
 
     public ClassOutsideOfPackageException(Class<?> _clz) {

diff --git a/dbus-java-core/src/main/java/org/freedesktop/dbus/exceptions/DBusConnectionException.java b/dbus-java-core/src/main/java/org/freedesktop/dbus/exceptions/DBusConnectionException.java
@@ -1,5 +1,7 @@
 package org.freedesktop.dbus.exceptions;
 
+import java.io.Serial;
+
 /**
  * Thrown when something goes wrong with the connection to DBus.<p>
  * This includes find the connection parameter (e.g. machine-id file) or establishing the connection.
@@ -8,6 +10,7 @@
  * @since v3.3.0 - 2021-01-27
  */
 public class DBusConnectionException extends DBusException {
+    @Serial
     private static final long serialVersionUID = -1L;
 
     public DBusConnectionException() {