#164 : Maven - Bumped Lombok for JDK21

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

Author: gazbert

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);