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How come this code works when I run it normally in Android Studio as Java, but as soon as I run it as an app it shows me a NullPointerExcception?

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1

It works perfectly fine when it's run normally as a java code, but as soon as it's run as an app, the queueManager shows NULL. All this code is put inside onCreate(Bundle savedInstanceState). When it's run as java, the debugger actually shows a queueManager value.

void init() 


 int openOptions = CMQC.MQOO_INQUIRE 

ibm-mq

share|improve this question

edited Mar 8 at 11:20

integrationworker

asked Mar 8 at 11:07

integrationworkerintegrationworker

166

add a comment | 

1

It works perfectly fine when it's run normally as a java code, but as soon as it's run as an app, the queueManager shows NULL. All this code is put inside onCreate(Bundle savedInstanceState). When it's run as java, the debugger actually shows a queueManager value.

void init() 


 int openOptions = CMQC.MQOO_INQUIRE 

ibm-mq

share|improve this question

edited Mar 8 at 11:20

integrationworker

asked Mar 8 at 11:07

integrationworkerintegrationworker

166

add a comment | 

It works perfectly fine when it's run normally as a java code, but as soon as it's run as an app, the queueManager shows NULL. All this code is put inside onCreate(Bundle savedInstanceState). When it's run as java, the debugger actually shows a queueManager value.

void init() 


 int openOptions = CMQC.MQOO_INQUIRE 

ibm-mq

share|improve this question

edited Mar 8 at 11:20

integrationworker

asked Mar 8 at 11:07

integrationworkerintegrationworker

166

void init() 


 int openOptions = CMQC.MQOO_INQUIRE 

share|improve this question

edited Mar 8 at 11:20

integrationworker

asked Mar 8 at 11:07

integrationworkerintegrationworker

166

share|improve this question

edited Mar 8 at 11:20

integrationworker

asked Mar 8 at 11:07

integrationworkerintegrationworker

166

asked Mar 8 at 11:07

integrationworkerintegrationworker

166

asked Mar 8 at 11:07

integrationworkerintegrationworker

166

2 Answers
2

active

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0

Is the MQEnvironment a external library? If yes, have you imported it to your android project?

share|improve this answer

answered Mar 8 at 11:10

HasBertHasBert

435

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes, otherwise I wouldn't even be able to run it
  
  – integrationworker
  Mar 8 at 11:14
  

  
  
  
  

add a comment | 

0

(1) As I have posted here many times, do NOT use MQEnvironment class as it is not thread safe. Put the connection information into a Hashtable and pass the Hastable to the MQQueueManager class. See here for an example of what I'm talking about.

(2) Putting "System.exit(2);" in the middle of your code is bad form and that means the finally clause will not be called. Hence, the code will leave open the queue and connection to queue manager.

(3) In your finally clause, you have the "disconnect" and "close" backwards. You must close the queue before you disconnect from the queue manager.

share|improve this answer

answered Mar 8 at 23:23

RogerRoger

4,859714

add a comment | 

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0

Is the MQEnvironment a external library? If yes, have you imported it to your android project?

share|improve this answer

answered Mar 8 at 11:10

HasBertHasBert

435

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes, otherwise I wouldn't even be able to run it
  
  – integrationworker
  Mar 8 at 11:14
  

  
  
  
  

add a comment | 

0

Is the MQEnvironment a external library? If yes, have you imported it to your android project?

share|improve this answer

answered Mar 8 at 11:10

HasBertHasBert

435

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes, otherwise I wouldn't even be able to run it
  
  – integrationworker
  Mar 8 at 11:14
  

  
  
  
  

add a comment | 

Is the MQEnvironment a external library? If yes, have you imported it to your android project?

share|improve this answer

answered Mar 8 at 11:10

HasBertHasBert

435

share|improve this answer

answered Mar 8 at 11:10

HasBertHasBert

435

answered Mar 8 at 11:10

HasBertHasBert

435

answered Mar 8 at 11:10

HasBertHasBert

435

0

(1) As I have posted here many times, do NOT use MQEnvironment class as it is not thread safe. Put the connection information into a Hashtable and pass the Hastable to the MQQueueManager class. See here for an example of what I'm talking about.

(2) Putting "System.exit(2);" in the middle of your code is bad form and that means the finally clause will not be called. Hence, the code will leave open the queue and connection to queue manager.

(3) In your finally clause, you have the "disconnect" and "close" backwards. You must close the queue before you disconnect from the queue manager.

share|improve this answer

answered Mar 8 at 23:23

RogerRoger

4,859714

add a comment | 

0

(1) As I have posted here many times, do NOT use MQEnvironment class as it is not thread safe. Put the connection information into a Hashtable and pass the Hastable to the MQQueueManager class. See here for an example of what I'm talking about.

(2) Putting "System.exit(2);" in the middle of your code is bad form and that means the finally clause will not be called. Hence, the code will leave open the queue and connection to queue manager.

(3) In your finally clause, you have the "disconnect" and "close" backwards. You must close the queue before you disconnect from the queue manager.

share|improve this answer

answered Mar 8 at 23:23

RogerRoger

4,859714

add a comment | 

(1) As I have posted here many times, do NOT use MQEnvironment class as it is not thread safe. Put the connection information into a Hashtable and pass the Hastable to the MQQueueManager class. See here for an example of what I'm talking about.

(2) Putting "System.exit(2);" in the middle of your code is bad form and that means the finally clause will not be called. Hence, the code will leave open the queue and connection to queue manager.

(3) In your finally clause, you have the "disconnect" and "close" backwards. You must close the queue before you disconnect from the queue manager.

share|improve this answer

answered Mar 8 at 23:23

RogerRoger

4,859714

share|improve this answer

answered Mar 8 at 23:23

RogerRoger

4,859714

answered Mar 8 at 23:23

RogerRoger

4,859714

answered Mar 8 at 23:23

RogerRoger

4,859714