B4J Question Arrays

[saunwin]

Hi Guys and Gurus

Dim b() as byte
b(1) = 129

crashes program with java.lang.ArrayIndexOutOfBoundsException: 2
Why ?

Thanks in advance.

 

[Daestrum]

Arrays start at 0, so b(1) is actually the second item.
Try b(0) in your example above and dimension the array 'Dim b(1) as byte'.
If you want 2 items use Dim b(2) as byte, then you can use b(0) and b(1).

 

[saunwin]

Hi Daestrum,

Thanks for the reply.
It does work when dimensioning an array of known size (a number inside the brackets).

Cheers

 

[Erel]

Dim b() As Byte creates an empty array.

Dim b(1) As Byte
b(0) = 129

Or better:

Dim b() As Byte = Array As Byte(129)