FILE READING

[sat]

Hello Friends

i'm working on java.(JBUilder 3 and JDK1.2)


i need your suggestion for the follwing task..

OBJECTIVE : Getting data(records) from .txt files (tab seperated) and .csv files. and display records in JTable. File size may be 1mb to 5GB.

WHAT I DID for file reading :

BufferedReader in= new BufferedReader( new InputStreamReader ( new FileInputStream(filePath)));

while((s1=in.readLine()) != null) {
// prepare table model
}//end of while

NOTE: THIS IS TAKING LONG TIME (FOR READING 364KB FILE IT'S TAKING 10SECONDS) 64MB RAM && PII

SUGGESTION FROM U:

IS THERE ANY EFFICIENT METHOD TO READ FROM FILE??????????????(As Fast as Possible)
if, please suggest..

Thanx

sat

[Axel Goldbach]

Hi,

I think Java is efficient enough in reading from files. The following code takes 1973 milliseconds for 6.022.093 bytes (!!!) of a text file:

import java.io.*;

public class Test
{
public static void main ( String args[] ) throws Exception
{
String s = null;

BufferedReader in = new BufferedReader ( new InputStreamReader ( new FileInputStream ( "test.txt" ) ) );

long start = System.currentTimeMillis ();
while ( ( s = in.readLine () ) != null );
long stop = System.currentTimeMillis ();
System.out.println ( "elapsed=" + ( stop - start ) );

in.close ();
}
}



I think you've got a problem with the handling of your table.

Bye
Axel