Which class is suitable ?

[benny rusli]

Hello people,

i have a question, which class is convenient to use for writing more than 15.000.000 rows in a text file. The following classes are considered :
FileReader and FileWriter from java.io package, RandomAccessFile from java.io package ,or FileChannel from java.nio package. For example i want to write the iterated number into a text file, as the below code shown :

 
for(long i = 0; i<=15000000; i++)
{
    // write to a text file with the one from the above showing classes
}

Any help will be appreciated.

[Mark Van Tuyl]

I would use something like this:

public static void main(String [] args) throws IOException {
    BufferedWriter writer = new BufferedWriter(new FileWriter(new File("test.txt")));
 
    for (int i = 0; i < 15000000; i++) {
        writer.write(i + "\n");
    }
 
    writer.flush();
    writer.close();
}

[ak pillai]

Yes, as mark suggested use buffering for improved performance.

if you need real scalability (i.e. you want to use multi-threading etc) go with java.nio.*.
[ March 12, 2006: Message edited by: ak pillai ]