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Dynamic 2d array size?

Derek Rose
Greenhorn

Joined: Apr 21, 2013
Posts: 10
i have a 2d array that i am filling with data from an sql database. I would like the table to only be as big as the size of the database. 24 rows fit in the JScrollPane before the auto scroll starts so 24 as a default could be ok...how do i change it so i dont get an out of bounds exception once i go past 24?




i tried to make a loop that went through the results first and stored an index value...but then the table displays blank.



then use length instead of 24





But just displays a blank table...it is the correct size table though
Derek Rose
Greenhorn

Joined: Apr 21, 2013
Posts: 10
sorry, dumb mistake i fixed it
Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 39415
    
  28
Derek Rose wrote:i have a 2d array . . .
No, you haven’t. You have an array of arrays, which is different. And better.

Never use == true or == false.
What a strange loop! Was that what you had to fix?
Derek Rose
Greenhorn

Joined: Apr 21, 2013
Posts: 10
I needed to execute a different query for each loop. And I started learning Java last month and your the third person to tell me my logic is weird. That's just the way the solution comes to me haha
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: Dynamic 2d array size?