Minor code clean up

Author: velo

querydsl-examples/querydsl-example-jpa-quarkus/src/main/java/com/querydsl/example/FruitResource.java

@@ -101,8 +101,8 @@ public Response toResponse(Exception exception) {
       LOGGER.error("Failed to handle request", exception);
 
       int code = 500;
-      if (exception instanceof WebApplicationException) {
-        code = ((WebApplicationException) exception).getResponse().getStatus();
+      if (exception instanceof WebApplicationException applicationException) {
+        code = applicationException.getResponse().getStatus();
       }
 
       ObjectNode exceptionJson = objectMapper.createObjectNode();

querydsl-examples/querydsl-example-jpa-spring/src/main/java/com/querydsl/example/Customer.java

@@ -24,7 +24,7 @@ public Customer(String firstName, String lastName) {
 
   @Override
   public String toString() {
-    return String.format("Customer[id=%d, firstName='%s', lastName='%s']", id, firstName, lastName);
+    return "Customer[id=%d, firstName='%s', lastName='%s']".formatted(id, firstName, lastName);
   }
 
   public Long getId() {