Alonexc opened a new issue, #2653:
URL: https://github.com/apache/incubator-eventmesh/issues/2653

   ### Search before asking
   
   - [X] I had searched in the 
[issues](https://github.com/apache/eventmesh/issues?q=is%3Aissue) and found no 
similar issues.
   
   
   ### Enhancement Request
   
   
![image](https://user-images.githubusercontent.com/91315508/209287588-c48b7ffc-da78-45cb-81f1-2f3aac1b3ff9.png)
   located at:
   
eventmesh-sdk-java/src/main/java/org/apache/eventmesh/client/catalog/EventMeshCatalogClient.java
 line 76
   analysis and explanation:
   This line is in the form of 
   String str = ...
   str.equals("someOtherString");
   A NullPointerException may occur if the String variable str is null. If 
instead the code was restructured to 
   String str = ...
   "someOtherString".equals(str);
   that is, call equals() on the string literal, passing the variable as an 
argument, then this exception could never happen as both equals() check for 
null.
   
   
   ### Describe the solution you'd like
   
   Adjust the code to:String str = "someOtherString".eals(str).
   
   ### Are you willing to submit PR?
   
   - [ ] Yes I am willing to submit a PR!


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