#164 : Maven - Bumped Lombok for JDK21

* Tweaked maven compiler settings for JDK21.
* Fixed Javadoc earnings in exchange adapters.

bxbot-core/src/main/java/com/gazbert/bxbot/core/config/exchange/ExchangeConfigImpl.java

@@ -42,6 +42,11 @@ public class ExchangeConfigImpl implements ExchangeConfig {
   private NetworkConfig networkConfig;
   private OtherConfig otherConfig;
 
+  /** Creates the Exchange Config impl. */
+  public ExchangeConfigImpl() {
+    // No extra init needed.
+  }
+
   @Override
   public String getExchangeName() {
     return exchangeName;

bxbot-core/src/main/java/com/gazbert/bxbot/core/config/strategy/StrategyConfigItems.java

@@ -39,6 +39,11 @@ public final class StrategyConfigItems implements StrategyConfig {
 
   private Map<String, String> items = new HashMap<>();
 
+  /** Creates the Strategy Config Items. */
+  public StrategyConfigItems() {
+    // No extra init needed.
+  }
+
   @Override
   public String getConfigItem(String key) {
     return items.get(key);

bxbot-core/src/main/java/com/gazbert/bxbot/core/config/strategy/TradingStrategiesBuilder.java

@@ -50,6 +50,11 @@ public class TradingStrategiesBuilder {
 
   private TradingStrategyFactory tradingStrategyFactory;
 
+  /** Creates the Trading Strategies Builder. */
+  public TradingStrategiesBuilder() {
+    // No extra init needed.
+  }
+
   /**
    * Sets the trading strategy factory.
    *

bxbot-core/src/main/java/com/gazbert/bxbot/core/util/ConfigurableComponentFactory.java

@@ -37,6 +37,11 @@
 @Log4j2
 public class ConfigurableComponentFactory {
 
+  /** Creates the Configurable Component Factory. */
+  public ConfigurableComponentFactory() {
+    // No extra init needed.
+  }
+
   /**
    * Loads and instantiates a given class and returns it.
    *

bxbot-domain-objects/src/main/java/com/gazbert/bxbot/domain/exchange/ExchangeConfig.java

@@ -36,7 +36,7 @@
 public class ExchangeConfig {
 
   @Schema(
-          requiredMode = Schema.RequiredMode.REQUIRED,
+      requiredMode = Schema.RequiredMode.REQUIRED,
       description =
           "The Exchange name. It is used in log statements to display the Exchange's name."
               + " Value must be an alphanumeric string. Spaces are allowed.")
@@ -69,6 +69,11 @@ public class ExchangeConfig {
               + "any additional config, e.g. buy/sell fees.")
   private Map<String, String> otherConfig;
 
+  /** Creates the Exchange config. */
+  public ExchangeConfig() {
+    // No extra init needed.
+  }
+
   /**
    * Returns the name.
    *

bxbot-exchanges/src/main/java/com/gazbert/bxbot/exchanges/BitfinexExchangeAdapter.java

@@ -135,6 +135,11 @@ public final class BitfinexExchangeAdapter extends AbstractExchangeAdapter
 
   private Gson gson;
 
+  /** Constructs the Exchange Adapter. */
+  public BitfinexExchangeAdapter() {
+    // No extra init.
+  }
+
   @Override
   public void init(ExchangeConfig config) {
     log.info("About to initialise Bitfinex ExchangeConfig: " + config);

bxbot-exchanges/src/main/java/com/gazbert/bxbot/exchanges/BitstampExchangeAdapter.java

@@ -129,6 +129,11 @@ public class BitstampExchangeAdapter extends AbstractExchangeAdapter implements
 
   private Gson gson;
 
+  /** Constructs the Exchange Adapter. */
+  public BitstampExchangeAdapter() {
+    // No extra init.
+  }
+
   @Override
   public void init(ExchangeConfig config) {
     log.info("About to initialise Bitstamp ExchangeConfig: " + config);

bxbot-exchanges/src/main/java/com/gazbert/bxbot/exchanges/CoinbaseProExchangeAdapter.java

@@ -141,6 +141,11 @@ public final class CoinbaseProExchangeAdapter extends AbstractExchangeAdapter
 
   private Gson gson;
 
+  /** Constructs the Exchange Adapter. */
+  public CoinbaseProExchangeAdapter() {
+    // No extra init.
+  }
+
   @Override
   public void init(ExchangeConfig config) {
     log.info("About to initialise COINBASE PRO ExchangeConfig: " + config);

bxbot-exchanges/src/main/java/com/gazbert/bxbot/exchanges/GeminiExchangeAdapter.java

@@ -160,6 +160,11 @@ public String getStringValue() {
 
   private Gson gson;
 
+  /** Constructs the Exchange Adapter. */
+  public GeminiExchangeAdapter() {
+    // No extra init.
+  }
+
   @Override
   public void init(ExchangeConfig config) {
     log.info("About to initialise Gemini ExchangeConfig: " + config);

bxbot-exchanges/src/main/java/com/gazbert/bxbot/exchanges/KrakenExchangeAdapter.java

@@ -188,9 +188,13 @@ public final class KrakenExchangeAdapter extends AbstractExchangeAdapter
 
   private Mac mac;
   private boolean initializedMacAuthentication = false;
-
   private Gson gson;
 
+  /** Constructs the Exchange Adapter. */
+  public KrakenExchangeAdapter() {
+    // No extra init.
+  }
+
   @Override
   public void init(ExchangeConfig config) {
     log.info("About to initialise Kraken ExchangeConfig: " + config);

bxbot-exchanges/src/main/java/com/gazbert/bxbot/exchanges/TryModeExchangeAdapter.java

@@ -94,6 +94,11 @@ public class TryModeExchangeAdapter extends AbstractExchangeAdapter implements E
   private OpenOrder currentOpenOrder;
   private boolean isOpenOrderCheckReentering;
 
+  /** Constructs the Exchange Adapter. */
+  public TryModeExchangeAdapter() {
+    // No extra init.
+  }
+
   @Override
   public void init(ExchangeConfig config) {
     log.info("About to initialise try-mode adapter with the following exchange config: " + config);

bxbot-rest-api/src/main/java/com/gazbert/bxbot/rest/api/RestApiConfig.java

@@ -54,6 +54,11 @@ public class RestApiConfig {
   @Min(1)
   private int maxLogfileDownloadSize;
 
+  /** Creates the REST API config. */
+  public RestApiConfig() {
+    // No extra init needed.
+  }
+
   /**
    * Returns the max logfile size (in bytes) to be returned by the REST API.
    *

bxbot-rest-api/src/main/java/com/gazbert/bxbot/rest/api/security/authentication/JwtAuthenticationEntryPoint.java

@@ -45,6 +45,11 @@
 @Component
 public class JwtAuthenticationEntryPoint implements AuthenticationEntryPoint {
 
+  /** Creates the JWT Authentication Entry Point. */
+  public JwtAuthenticationEntryPoint() {
+    // No extra init needed.
+  }
+
   /**
    * This is invoked when a user tries to access a secured REST resource without supplying any
    * credentials in the HTTP Authorization header.

bxbot-rest-api/src/main/java/com/gazbert/bxbot/rest/api/security/authentication/JwtAuthenticationFilter.java

@@ -58,6 +58,11 @@ public class JwtAuthenticationFilter extends OncePerRequestFilter {
 
   private JwtUtils jwtUtils;
 
+  /** Creates the JWT Authentication Filter. */
+  public JwtAuthenticationFilter() {
+    // No extra init needed.
+  }
+
   @Override
   protected void doFilterInternal(
       HttpServletRequest request, HttpServletResponse response, FilterChain chain)

bxbot-rest-api/src/main/java/com/gazbert/bxbot/rest/api/security/config/RestCorsConfig.java

@@ -50,6 +50,11 @@ public class RestCorsConfig {
   @Value("${restapi.cors.allowed_origin}")
   private String allowedOrigin;
 
+  /** Creates the REST CORS config. */
+  public RestCorsConfig() {
+    // No extra init needed.
+  }
+
   /**
    * Creates the CORS configuration for the CorsFilter to use.
    *

bxbot-rest-api/src/main/java/com/gazbert/bxbot/rest/api/security/jwt/JwtUtils.java

@@ -92,6 +92,11 @@ public class JwtUtils {
   @Value("${bxbot.restapi.jwt.audience}")
   private String audience;
 
+  /** Creates the JWT Utils. */
+  public JwtUtils() {
+    // No extra init needed.
+  }
+
   /**
    * For simple validation, it is sufficient to check the token integrity by just decrypting it with
    * the signing key and making sure it has not expired. We don't have to call the database for an

bxbot-rest-api/src/main/java/com/gazbert/bxbot/rest/api/security/model/Role.java

@@ -61,6 +61,11 @@ public class Role {
   @ManyToMany(mappedBy = "roles", fetch = FetchType.LAZY)
   private List<User> users;
 
+  /** Creates the Role. */
+  public Role() {
+    // No extra init needed.
+  }
+
   /**
    * Returns the id.
    *

bxbot-rest-api/src/main/java/com/gazbert/bxbot/rest/api/security/model/User.java

@@ -99,6 +99,11 @@ public class User {
       inverseJoinColumns = {@JoinColumn(name = "ROLE_ID", referencedColumnName = "ID")})
   private List<Role> roles;
 
+  /** Creates the User. */
+  public User() {
+    // No extra init needed.
+  }
+
   /**
    * Returns the id.
    *

bxbot-rest-api/src/main/java/com/gazbert/bxbot/rest/api/v1/RestController.java

@@ -49,4 +49,9 @@
             termsOfService = "https://github.com/gazbert/bxbot"))
 @SecurityRequirement(name = "Authorization")
 public abstract class RestController {
+
+  /** Constructs the REST Controller. */
+  public RestController() {
+    // No extra init needed.
+  }
 }

bxbot-strategies/src/main/java/com/gazbert/bxbot/strategies/ExampleScalpingStrategy.java

@@ -155,6 +155,11 @@ public class ExampleScalpingStrategy implements TradingStrategy {
    */
   private BigDecimal minimumPercentageGain;
 
+  /** Constructs the Example Scalping Strategy. */
+  public ExampleScalpingStrategy() {
+    // No extra init.
+  }
+
   /**
    * Initialises the Trading Strategy. Called once by the Trading Engine when the bot starts up;
    * it's a bit like a servlet init() method.

bxbot-yaml-datastore/src/main/java/com/gazbert/bxbot/datastore/yaml/ConfigurationManager.java

@@ -54,6 +54,11 @@ public class ConfigurationManager {
 
   private static final String YAML_HEADER = "---" + System.getProperty("line.separator");
 
+  /** Creates the Configuration Manager. */
+  public ConfigurationManager() {
+    // No extra init needed.
+  }
+
   /**
    * Loads the config from the YAML file.
    *

bxbot-yaml-datastore/src/main/java/com/gazbert/bxbot/datastore/yaml/emailalerts/EmailAlertsType.java

@@ -34,6 +34,11 @@ public class EmailAlertsType {
 
   private EmailAlertsConfig emailAlerts;
 
+  /** Creates the Email Alerts type. */
+  public EmailAlertsType() {
+    // No extra init needed.
+  }
+
   /**
    * Returns the email alerts config.
    *

bxbot-yaml-datastore/src/main/java/com/gazbert/bxbot/datastore/yaml/engine/EngineType.java

@@ -34,6 +34,11 @@ public class EngineType {
 
   private EngineConfig engine;
 
+  /** Creates the Engine type. */
+  public EngineType() {
+    // No extra init needed.
+  }
+
   /**
    * Returns the engine config.
    *

bxbot-yaml-datastore/src/main/java/com/gazbert/bxbot/datastore/yaml/exchange/ExchangeType.java

@@ -34,6 +34,11 @@ public class ExchangeType {
 
   private ExchangeConfig exchange;
 
+  /** Creates the Exchange type. */
+  public ExchangeType() {
+    // No extra init needed.
+  }
+
   /**
    * Returns the exchange config.
    *

bxbot-yaml-datastore/src/main/java/com/gazbert/bxbot/datastore/yaml/market/MarketsType.java

@@ -36,6 +36,11 @@ public class MarketsType {
 
   private List<MarketConfig> markets;
 
+  /** Creates the Market type. */
+  public MarketsType() {
+    // No extra init needed.
+  }
+
   /**
    * Returns the market configs.
    *

bxbot-yaml-datastore/src/main/java/com/gazbert/bxbot/datastore/yaml/strategy/StrategiesType.java

@@ -36,6 +36,11 @@ public class StrategiesType {
 
   private List<StrategyConfig> strategies;
 
+  /** Creates the Strategies type. */
+  public StrategiesType() {
+    // No extra init needed.
+  }
+
   /**
    * Returns the Strategy configs.
    *

pom.xml

@@ -268,7 +268,7 @@
       <dependency>
         <groupId>org.projectlombok</groupId>
         <artifactId>lombok</artifactId>
-        <version>1.18.20</version>
+        <version>1.18.32</version>
       </dependency>
 
       <!--
@@ -362,8 +362,11 @@
           <artifactId>maven-compiler-plugin</artifactId>
           <version>3.11.0</version>
           <configuration>
-            <source>17</source>
-            <target>17</target>
+            <source>21</source>
+            <target>21</target>
+            <compilerArgs>
+              <arg>-Xlint:-options</arg>
+            </compilerArgs>
           </configuration>
         </plugin>