null

[triggerthat]

Hi guys,

Just abit stuck on something. Basically I've got an array of IDs. I've got a if statement that checks that student doesn’t have a mark already.

Basically I have -


marks[num] != null;

Obviously you can't apply null to a int type so I was wondering how'd you do it?

 

[triggerthat]

Hey,

It's Java. You can't applied null to int.

And as for != 0, it wont work for the first entry considering my num index will start at 0.

 

[triggerthat]

Hi,

Unfortunately the specification states that they have to of type int, and we have to define the index as 0.

Basically I just have to check the array of marks doesn’t have a mark already.