diff --git a/acl/src/main/java/org/apache/rocketmq/acl/common/AclUtils.java b/acl/src/main/java/org/apache/rocketmq/acl/common/AclUtils.java
index a03d136212efc685514044621c99e009e09bae7c..b801c69c707ec740b98e9f84d4b05e616d36edb1 100644
--- a/acl/src/main/java/org/apache/rocketmq/acl/common/AclUtils.java
+++ b/acl/src/main/java/org/apache/rocketmq/acl/common/AclUtils.java
@@ -23,7 +23,6 @@ import java.io.FileNotFoundException;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.io.PrintWriter;
-import java.util.ArrayList;
 import java.util.Map;
 import java.util.SortedMap;
 import org.apache.commons.lang3.StringUtils;
@@ -210,9 +209,9 @@ public class AclUtils {
         // expand netaddress
         int separatorCount = StringUtils.countMatches(netaddress, ":");
         int padCount = part - separatorCount;
-        if(padCount > 0){
+        if (padCount > 0) {
             StringBuilder padStr = new StringBuilder(":");
-            for(int i = 0; i < padCount; i++){
+            for (int i = 0; i < padCount; i++) {
                 padStr.append(":");
             }
             netaddress = StringUtils.replace(netaddress, "::", padStr.toString());
@@ -221,7 +220,7 @@ public class AclUtils {
         // pad netaddress
         String[] strArray = StringUtils.splitPreserveAllTokens(netaddress, ":");
         for (int i = 0; i < strArray.length; i++) {
-            if(strArray[i].length() < 4){
+            if (strArray[i].length() < 4) {
                 strArray[i] = StringUtils.leftPad(strArray[i], 4, '0');
             }
         }
diff --git a/example/src/main/java/org/apache/rocketmq/example/simple/PullConsumer.java b/example/src/main/java/org/apache/rocketmq/example/simple/PullConsumer.java
index c6c706b4077f5c37fe666c0f72a847fa9125d68e..4bc63383954ec3c44db62b9b6398bb5dfba41c89 100644
--- a/example/src/main/java/org/apache/rocketmq/example/simple/PullConsumer.java
+++ b/example/src/main/java/org/apache/rocketmq/example/simple/PullConsumer.java
@@ -36,7 +36,7 @@ import org.apache.rocketmq.remoting.exception.RemotingException;
 public class PullConsumer {
 
     public static void main(String[] args) throws MQClientException {
-    	
+
         DefaultMQPullConsumer consumer = new DefaultMQPullConsumer("please_rename_unique_group_name_5");
         consumer.setNamesrvAddr("127.0.0.1:9876");
         Set<String> topics = new HashSet<>();
@@ -46,99 +46,101 @@ public class PullConsumer {
         consumer.start();
 
         ExecutorService executors = Executors.newFixedThreadPool(topics.size(), new ThreadFactory() {
-			@Override
-			public Thread newThread(Runnable r) {
+            @Override
+            public Thread newThread(Runnable r) {
                 return new Thread(r, "PullConsumerThread");
             }
-		});
-        for(String topic : consumer.getRegisterTopics()){
-        	
-        	executors.execute(new Runnable() {
-        		
-        		public void doSomething(List<MessageExt> msgs){
-        			//do you business
-        			System.out.println(msgs);
-        		}
-				@Override
-				public void run() {
-					while(true){
-						try {
-							Set<MessageQueue> messageQueues =  consumer.fetchMessageQueuesInBalance(topic);
-							if(messageQueues == null || messageQueues.isEmpty()){
-								Thread.sleep(1000);
-								continue;
-							}
-							PullResult pullResult = null;
-							for(MessageQueue messageQueue : messageQueues){
-								try {
-									long offset = this.consumeFromOffset(messageQueue);
-									pullResult = consumer.pull(messageQueue, "*", offset, 32);
-									switch (pullResult.getPullStatus()) {
-			                        case FOUND:
-			                        	List<MessageExt> msgs = pullResult.getMsgFoundList();
-			                        	
-			                        	if(msgs != null && !msgs.isEmpty()){
-			                        		this.doSomething(msgs);
-			                        		//update offset to broker
-			                        		consumer.updateConsumeOffset(messageQueue, pullResult.getNextBeginOffset());
-			                        		//print pull tps
-											this.incPullTPS(topic, pullResult.getMsgFoundList().size());
-			                        	}
-			                        	break;
-			                        case OFFSET_ILLEGAL:
-			                        	consumer.updateConsumeOffset(messageQueue, pullResult.getNextBeginOffset());
-			                        	break;
-			                        case NO_NEW_MSG:
-			                        	Thread.sleep(1);
-			                        	consumer.updateConsumeOffset(messageQueue, pullResult.getNextBeginOffset());
-			                        	break;
-			                        case NO_MATCHED_MSG:
-			                        	consumer.updateConsumeOffset(messageQueue, pullResult.getNextBeginOffset());
-			                        	break;
-			                        default:
-								}
-								} catch (RemotingException e) {
-									e.printStackTrace();
-								} catch (MQBrokerException e) {
-									e.printStackTrace();
-								} catch (Exception e){
-									e.printStackTrace();
-								}
-							}
-						} catch (MQClientException e) {
-							//reblance error
-							e.printStackTrace();
-						} catch (InterruptedException e) {
-							e.printStackTrace();
-						} catch (Exception e){
-							e.printStackTrace();
-						}
-					}
-				}
-				
-				public long consumeFromOffset(MessageQueue messageQueue) throws MQClientException{
-					//-1 when started
-					long offset = consumer.getOffsetStore().readOffset(messageQueue, ReadOffsetType.READ_FROM_MEMORY);
-					if(offset < 0){
-						//query from broker
-						offset = consumer.getOffsetStore().readOffset(messageQueue, ReadOffsetType.READ_FROM_STORE);
-					}
-                    if (offset < 0){
-                    	//first time start from last offset
-                    	offset = consumer.maxOffset(messageQueue);
+        });
+        for (String topic : consumer.getRegisterTopics()) {
+
+            executors.execute(new Runnable() {
+
+                public void doSomething(List<MessageExt> msgs) {
+                    //do you business
+
+                }
+
+                @Override
+                public void run() {
+                    while (true) {
+                        try {
+                            Set<MessageQueue> messageQueues = consumer.fetchMessageQueuesInBalance(topic);
+                            if (messageQueues == null || messageQueues.isEmpty()) {
+                                Thread.sleep(1000);
+                                continue;
+                            }
+                            PullResult pullResult = null;
+                            for (MessageQueue messageQueue : messageQueues) {
+                                try {
+                                    long offset = this.consumeFromOffset(messageQueue);
+                                    pullResult = consumer.pull(messageQueue, "*", offset, 32);
+                                    switch (pullResult.getPullStatus()) {
+                                        case FOUND:
+                                            List<MessageExt> msgs = pullResult.getMsgFoundList();
+
+                                            if (msgs != null && !msgs.isEmpty()) {
+                                                this.doSomething(msgs);
+                                                //update offset to broker
+                                                consumer.updateConsumeOffset(messageQueue, pullResult.getNextBeginOffset());
+                                                //print pull tps
+                                                this.incPullTPS(topic, pullResult.getMsgFoundList().size());
+                                            }
+                                            break;
+                                        case OFFSET_ILLEGAL:
+                                            consumer.updateConsumeOffset(messageQueue, pullResult.getNextBeginOffset());
+                                            break;
+                                        case NO_NEW_MSG:
+                                            Thread.sleep(1);
+                                            consumer.updateConsumeOffset(messageQueue, pullResult.getNextBeginOffset());
+                                            break;
+                                        case NO_MATCHED_MSG:
+                                            consumer.updateConsumeOffset(messageQueue, pullResult.getNextBeginOffset());
+                                            break;
+                                        default:
+                                    }
+                                } catch (RemotingException e) {
+                                    e.printStackTrace();
+                                } catch (MQBrokerException e) {
+                                    e.printStackTrace();
+                                } catch (Exception e) {
+                                    e.printStackTrace();
+                                }
+                            }
+                        } catch (MQClientException e) {
+                            //reblance error
+                            e.printStackTrace();
+                        } catch (InterruptedException e) {
+                            e.printStackTrace();
+                        } catch (Exception e) {
+                            e.printStackTrace();
+                        }
+                    }
+                }
+
+                public long consumeFromOffset(MessageQueue messageQueue) throws MQClientException {
+                    //-1 when started
+                    long offset = consumer.getOffsetStore().readOffset(messageQueue, ReadOffsetType.READ_FROM_MEMORY);
+                    if (offset < 0) {
+                        //query from broker
+                        offset = consumer.getOffsetStore().readOffset(messageQueue, ReadOffsetType.READ_FROM_STORE);
+                    }
+                    if (offset < 0) {
+                        //first time start from last offset
+                        offset = consumer.maxOffset(messageQueue);
                     }
                     //make sure
-                    if (offset < 0){
-                    	offset = 0;
+                    if (offset < 0) {
+                        offset = 0;
                     }
-					return offset;
-				}
-				public void incPullTPS(String topic, int pullSize) {
-					consumer.getDefaultMQPullConsumerImpl().getRebalanceImpl().getmQClientFactory()
-							.getConsumerStatsManager().incPullTPS(consumer.getConsumerGroup(), topic, pullSize);
-				}
-        	});
-        	
+                    return offset;
+                }
+
+                public void incPullTPS(String topic, int pullSize) {
+                    consumer.getDefaultMQPullConsumerImpl().getRebalanceImpl().getmQClientFactory()
+                            .getConsumerStatsManager().incPullTPS(consumer.getConsumerGroup(), topic, pullSize);
+                }
+            });
+
         }
 //        executors.shutdown();
 //        consumer.shutdown();