[Solved] Need help! How to solve this exception

Question

If request parameter age is empty, not a number, or missing altogether, you cannot convert it to a number.

You’ll have to decide what to do in such situation, then do it in the cases mentioned above, i.e.:

Check the parameter for non-emptiness
Surround the conversion with try { ... } catch (NumberFormatException e) { ... }

Accepted Answer

If request parameter age is empty, not a number, or missing altogether, you cannot convert it to a number.

You’ll have to decide what to do in such situation, then do it in the cases mentioned above, i.e.:

Check the parameter for non-emptiness
Surround the conversion with try { ... } catch (NumberFormatException e) { ... }