how can I add x # of Integers and do a comparison in an if statement?

Eunice_Lee

Hi,

I'm getting a NullPointerException when I try to add x # of  Integers and do a comparison.

I declare my variables like this:

Integer i1 = 0

Integer i2 = 0

Integer i3 = 0

.....

Integer i[x] = 0

 

I do some logic and assign values to those Integers:

i1= 1

i2 = 1  etc.....

when I try to do this:

if (i1 + i2 + i3 + i4 + .... + i[x] > n)

   do something

It gives me a NullPointerException.

Is this kind of operation not allowed?

I tried using parentheses around like this but it give me a syntax error

Error: The method "if()" was not found..

if ((i1 + i2 + i3 + i4 + .... + i[x]) > n)

 

Any help would be appreciated.

 

Thanks.

Eunice

 

Christopher_Parratt

Hi Eunice,

I assume that the NullPointerException is Java specific?  the reason why you could be getting that is if you did not initialize your array  int myArray[] = new int[20];
 

http://www.javaclass.info/classes/java-array/array-examples-demonstration-and-code-snippets.php

Thanks

-Chris