Make sure there no multiple empty lines and every file ends with a new line (#1417)

Author: siri-varma

checkstyle.xml

@@ -112,6 +112,7 @@
         <module name="ModifierOrder"/>
         <module name="EmptyLineSeparator">
             <property name="allowNoEmptyLineBetweenFields" value="true"/>
+            <property name="allowMultipleEmptyLines" value="false"/>
         </module>
         <module name="SeparatorWrap">
             <property name="id" value="SeparatorWrapDot"/>
@@ -287,4 +288,5 @@
         <module name="SuppressWarningsHolder"/>
     </module>
     <module name="SuppressWarningsFilter"/>
+    <module name="NewlineAtEndOfFile"/>
 </module>

dapr-spring/dapr-spring-boot-autoconfigure/src/main/java/io/dapr/spring/boot/autoconfigure/client/DaprClientProperties.java

@@ -23,7 +23,6 @@ public class DaprClientProperties {
   private Integer httpPort;
   private Integer grpcPort;
 
-
   /**
    * Constructs a {@link DaprClientProperties}.
    */

dapr-spring/dapr-spring-boot-autoconfigure/src/main/java/io/dapr/spring/boot/autoconfigure/pubsub/DaprPubSubProperties.java

@@ -15,7 +15,6 @@
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
 
-
 @ConfigurationProperties(prefix = DaprPubSubProperties.CONFIG_PREFIX)
 public class DaprPubSubProperties {
 

dapr-spring/dapr-spring-data/src/main/java/io/dapr/spring/data/MySQLDaprKeyValueAdapter.java

@@ -76,7 +76,6 @@ public MySQLDaprKeyValueAdapter(DaprClient daprClient, ObjectMapper mapper, Stri
     this.bindingName = bindingName;
   }
 
-
   @Override
   public <T> Iterable<T> getAllOf(String keyspace, Class<T> type) {
     Assert.hasText(keyspace, "Keyspace must not be empty");

dapr-spring/dapr-spring-data/src/main/java/io/dapr/spring/data/repository/query/DaprPredicate.java

@@ -18,7 +18,6 @@ public DaprPredicate(PropertyPath path, Object expected) {
     this(path, expected, (valueToCompare) -> ObjectUtils.nullSafeEquals(valueToCompare, expected));
   }
 
-
   /**
    * Creates a new {@link DaprPredicate}.
    *

dapr-spring/dapr-spring-messaging/src/main/java/io/dapr/spring/messaging/DaprMessagingTemplate.java

@@ -192,7 +192,6 @@ public SendMessageBuilder<T> withTopic(String topic) {
       return this;
     }
 
-
     @Override
     public void send() {
       template.doSend(topic, message);
@@ -202,7 +201,5 @@ public void send() {
     public Mono<Void> sendAsync() {
       return template.doSendAsync(topic, message);
     }
-
   }
-
 }

dapr-spring/dapr-spring-messaging/src/main/java/io/dapr/spring/messaging/observation/DaprMessagingSenderContext.java

@@ -58,7 +58,6 @@ public Map<String, String> properties() {
     return carrier.properties();
   }
 
-
   /**
    * The name of the bean sending the message (typically a {@code DaprMessagingTemplate}).
    * @return the name of the bean sending the message
@@ -75,7 +74,6 @@ public String getDestination() {
     return this.destination;
   }
 
-
   /**
    * Acts as a carrier for a Dapr message and records the propagated properties for
    * later access by the Dapr.

dapr-spring/dapr-spring-workflows/src/main/java/io/dapr/spring/workflows/config/EnableDaprWorkflows.java

@@ -1,6 +1,5 @@
 package io.dapr.spring.workflows.config;
 
-
 import org.springframework.context.annotation.Import;
 
 import java.lang.annotation.Retention;

examples/src/main/java/io/dapr/examples/workflows/childworkflow/DemoChildWorkflow.java

@@ -13,6 +13,7 @@
 
 package io.dapr.examples.workflows.childworkflow;
 
+import io.dapr.durabletask.interruption.OrchestratorBlockedException;
 import io.dapr.workflows.Workflow;
 import io.dapr.workflows.WorkflowStub;
 import io.dapr.workflows.WorkflowTaskOptions;

sdk-actors/src/main/java/io/dapr/actors/ActorId.java

@@ -123,7 +123,6 @@ public static ActorId createRandom() {
     return new ActorId(id.toString());
   }
 
-
   /**
    * Compares if two actors have the same content.
    *