Apply suggestions from code review

Co-authored-by: Josh Wong <[email protected]>

Author: brfrn169

microservice-transaction-sample-with-shared-cluster-with-jdbc/client/src/main/java/sample/client/command/RepaymentCommand.java

@@ -14,7 +14,7 @@ public class RepaymentCommand implements Callable<Integer> {
   @Parameters(index = "0", paramLabel = "CUSTOMER_ID", description = "customer ID")
   private int customerId;
 
-  @Parameters(index = "1", paramLabel = "AMOUNT", description = "amount of the money for repayment")
+  @Parameters(index = "1", paramLabel = "AMOUNT", description = "repayment amount")
   private int amount;
 
   @Override

microservice-transaction-sample-with-shared-cluster-with-jdbc/client/src/main/java/sample/client/command/Utils.java

@@ -23,7 +23,7 @@ public static void shutdownChannel(ManagedChannel channel) {
     try {
       channel.shutdown().awaitTermination(5, TimeUnit.SECONDS);
     } catch (InterruptedException e) {
-      System.err.println("failed to shutdown the channel");
+      System.err.println("failed to shut down the channel");
     }
   }
 

microservice-transaction-sample-with-shared-cluster-with-jdbc/customer-service/src/main/java/sample/customer/CustomerService.java

@@ -165,9 +165,9 @@ public void repayment(
 
           int updatedCreditTotal = result.get().creditTotal - request.getAmount();
 
-          // Check if over repayment or not
+          // Check if over-repayment or not
           if (updatedCreditTotal < 0) {
-            throw Status.FAILED_PRECONDITION.withDescription("Over repayment").asRuntimeException();
+            throw Status.FAILED_PRECONDITION.withDescription("Over-repayment").asRuntimeException();
           }
 
           // Reduce credit_total for the customer

microservice-transaction-sample-with-shared-cluster-with-jdbc/order-service/src/main/java/sample/order/OrderService.java

@@ -385,11 +385,11 @@ private void closeConnection(Connection connection) {
 
   @Override
   public void close() {
-    // Shutdown the gRPC channel to Customer service
+    // Shut down the gRPC channel to Customer service
     try {
       channel.shutdown().awaitTermination(5, TimeUnit.SECONDS);
     } catch (InterruptedException e) {
-      logger.warn("Failed to shutdown the channel", e);
+      logger.warn("Failed to shut down the channel", e);
     }
   }
 }