> please suggest if there is any other better way to read the report
JaCoCo offers several ways to create a coverage report:
1) Ant
2) Maven
3) Eclipse
4) Java APIs
In any case please make sure that the class files used for report
generation are the same class files than the ones used at runtime.
A good entry point is the documentation:
http://www.eclemma.org/jacoco/trunk/doc/
Regards,
-marc