How to create large file fast?

[tyrael]

Hello!

In my application I need to create large empty files (>50Mb) then fill them with data.

My problem is that I do not find any method for creating file with a specific size. My current solution is that I create a file something like this (it is just an example code):

conn = (FileConnection) Connector.open( "file:///"+aFilePath,
Connector.READ_WRITE );
conn.create();

Then I open an outputStream to the file and I write empty data to it (just for example a basic code part):

byte[] zeros = new byte[262144];
out = conn.openOutputStream();

// as many times as needed
while(needed){
out.write(zeros);
}
out.flush();

But this solution is very slow if I have to create a large file. Is there any faster way?

Thank you frou your help!
Br,
Peter

[juarezjunior]

Hi Peter,

AFAIK this is the only way to perform that, there is no way to determine its size in advance.

Kind regards,