导入的jar文件会创建空包

Question

I am importing a Jar file "com.ibm.mq.jar" into my workspace(Eclipse IDE). While importing, a screen came where I could see all the classes in the Jar file.

After I imported it into the work space, I was able to import the package and following statement didn't give any error.

  import com.ibm.mq.*;

But, in code I am not able to use any of the classes which were there in the package. Like, "MQC" is a class in the package, but in code it doesn't reflect("MQC cannot be resolved as a type" error comes if I try to use it).

This jar file actually contains Websphere MQ API classes.

Can anyone advise, what am I missing.

Answer 1

If you're using MQ 7, check its documentation here . There was some stuff going on about deprecation of com.ibm.mq.mqc and, depending on the version you use, that class was replaced by com.ibm.mq.constants.MQConstants . Like this one, there are other cases.

In fact com.ibm.mq only contains the exception MQException , so you won't find any classes there. I suggest you check the version you're using and dig a little deeper into the docs, as a first step.