[Java]Null value in String Array when int inserted

[roror3333]

I'm declaring a String array of [2][5]. Up until that point everything is fine. I can insert things into the array.But when I insert an integer value into the array, 'null' keyword is automatically added before that int value.So let's say I inserted 5 into arrayName[1][0]. When I print it afterwards I get 'null5'. Which is weird.What exactly you guys think the problem is. Thanks, C@N.