Added Jacoco Code Coverage For Sonar.

src/main/java/com/example/service/AzureAppConfigService.java

@@ -14,6 +14,8 @@ import org.slf4j.LoggerFactory;
 public class AzureAppConfigService {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(AzureAppConfigService.class);
+    private static final String EXISTING_KEY = "config.message";
+    private static final String NEW_KEY = "config.dataSource";
     private final ConfigurationClient configurationClient;
     private final SettingSelector settingSelector;
 
@@ -85,17 +87,17 @@ public class AzureAppConfigService {
      */
     public void azureAppConfiguration() {
         try {
-            String readValueByKey = getValueByKey("config.message");
+            String readValueByKey = getValueByKey(EXISTING_KEY);
             LOGGER.info("Message: {}", readValueByKey);
 
-            String writeValueByKey = writeValueByKey("config.datasource", "Data Source URL");
+            String writeValueByKey = writeValueByKey(NEW_KEY, "Data Source URL");
             LOGGER.info("Data Source URL From Application: {}", writeValueByKey);
 
             PagedIterable<ConfigurationSetting> readAllKeyValue = readAllKeyValue();
             readAllKeyValue.forEach(property -> LOGGER.info("Key: {} \t Value: {}", property.getKey(), property.getValue()));
 
-            String deleteValueByKey = deleteValueByKey("config.datasource");
-            LOGGER.warn("[Key: {} \t Value: {}] has been removed successfully", "config.datasource", deleteValueByKey);
+            String deleteValueByKey = deleteValueByKey(NEW_KEY);
+            LOGGER.warn("[Key: {} \t Value: {}] has been removed successfully", NEW_KEY, deleteValueByKey);
 
             LOGGER.info("After Removing Key-Value Read All Values...");
             readAllKeyValue = readAllKeyValue();