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random acesses from a file

2 replies on 1 page. Most recent reply: Feb 20, 2004 2:10 AM by Viswanatha Basavalingappa

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maxima

Posts: 15
Nickname: maxima
Registered: Nov, 2003

random acesses from a file

Posted: Jan 19, 2004 10:00 AM

i want to acesses randomly data from the text file and then i want to process that data and then i want to store that data in a different file in text format...can you tell me how can i do this???

do i have to use RandomAccessFile ?? stringTokenizer and BufferedReader??? ....but RandomAcessFile does operation in byte format...so processing of the data would be dificult, i feel.

thanks

Viswanatha Basavalingappa

Posts: 84
Nickname: viswagb
Registered: Nov, 2003

Re: random acesses from a file

Posted: Feb 17, 2004 12:21 AM

YES, you can use
RandomAccessFile(File file, String "r") throws FileNotFoundException

Value
Meaning
File file
"file" which you would like to read .
mode
"r" Open for reading only. Invoking any of the write methods of the resulting object will cause an IOException to be thrown.

Then you can ready by lot of diffrent option..
look at.
http://java.sun.com/j2se/1.4.2/docs/api/java/io/RandomAccessFile.html

Viswa
IBM
India
--------

Viswanatha Basavalingappa

Posts: 84
Nickname: viswagb
Registered: Nov, 2003

Re: random acesses from a file

Posted: Feb 20, 2004 2:10 AM

Here is the sample code for the same..

try {
File f = new File("filename");
RandomAccessFile raf = new RandomAccessFile(f, "rw");

// Read a character
char ch = raf.readChar();

// Seek to end of file
raf.seek(f.length());

// Append to the end
raf.writeChars("aString");
raf.close();
} catch (IOException e) {
}

I hope this helps you
Viswa
-------

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