Corrected string check for emptiness.

shroman · shroman · commit 087d989fcccc · 2017-03-16T23:09:13.000-07:00
diff --git a/tools/src/main/java/org/apache/rocketmq/tools/command/stats/StatsAllSubCommand.java b/tools/src/main/java/org/apache/rocketmq/tools/command/stats/StatsAllSubCommand.java
@@ -189,7 +189,7 @@ public void execute(CommandLine commandLine, Options options, RPCHook rpcHook) t
                     continue;
                 }
 
-                if (selectTopic != null && selectTopic != "" && !topic.equals(selectTopic)) {
+                if (selectTopic != null && !selectTopic.isEmpty() && !topic.equals(selectTopic)) {
                     continue;
                 }
 

Original file line number	Diff line number	Diff line change
`@@ -189,7 +189,7 @@ public void execute(CommandLine commandLine, Options options, RPCHook rpcHook) t`
`189`	`189`	`continue;`
`190`	`190`	`}`
`191`	`191`
`192`		`- if (selectTopic != null && selectTopic != "" && !topic.equals(selectTopic)) {`
	`192`	`+ if (selectTopic != null && !selectTopic.isEmpty() && !topic.equals(selectTopic)) {`
`193`	`193`	`continue;`
`194`	`194`	`}`
`195`	`195`