Why don't IDEs and compilers give warnings for shadowed variable definitions?
So many students have that problem.
Type: Posts; User: Norm
Why don't IDEs and compilers give warnings for shadowed variable definitions?
So many students have that problem.
This error message says you are trying to use a variable with a null value at line 52.
Look at line 52 and see what variable is null and backtrack to see why it does not have a valid value.
If you...