Reading array of unknown size from file to array

[Denis Palas]

Dear All

My program needs to read contents of a file into an array , for example my
file contains :


4 3 4
2 3 1 5
1 2
2 4 5 6 7 7

I deeply appreciate your help with this question :

How can I set up an array , specially that my column sizes are different as
you can see , to fill it with contents of a file?


Thank You
Denis

 

[bugbear]

Dear All

My program needs to read contents of a file into an array , for example my
file contains :


4 3 4
2 3 1 5
1 2
2 4 5 6 7 7

I deeply appreciate your help with this question :

How can I set up an array , specially that my column sizes are different as
you can see , to fill it with contents of a file?

You either need 2 passes, or a more dynamic data structure
than an array.

The "obvious" answer is an ArrayList or ArrayLists.

BugBear

 

[Daniel Pitts]

Dear All

My program needs to read contents of a file into an array , for example my
file contains :


4 3 4
2 3 1 5
1 2
2 4 5 6 7 7

I deeply appreciate your help with this question :

How can I set up an array , specially that my column sizes are different as
you can see , to fill it with contents of a file?


Thank You
Denis

You would be better off if you also told us what you expected the array
to look like.

{4,3,4}
{2,3,1,5}
{1, 2}
{2, 4, 5, 6, 7, 7}

If thats the case, then you need to read the file one line at a time,
and then build the array based on the number of tokens. Or use an
ArrayList (which automatically resizes for you).

Hope this helps.

- Daniel.