getParamValue
The getParamValue method shall return a configuration parameter’s value either from the specified group or from the default group.
Return
The getParamValue method returns the value of the specified configuration parameter as a string.
Parameters
groupName
Group from which the configuration parameter’s value is to be returned. Note: If the group is null, then the default group shall be used.
paramName
Name of the configuration parameter.
Throws
This exception shall be thrown if paramName is null.