reading ints from file

[skarosi]

hi all,
i guess that u have seen this kind of question hundreds of times, but i cant find anything on the search so here it is.
I want to save some numbers on a file, and then access them.
i have saved the numbers using PrintWriter, and it comes out just fine when i open the file. The problem is that i cant open them
i have used a line for each number, so i nead something like readln, or readLine. i found the BufferedReader, but i am not sure how to use it, let alone that this can only read lines of string, and i cant change them to int.
Thanks

 

[sedj]

BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("file.txt")));
String line = "";
int iLine;
while ((line = br.readLine()) != null) {
  iLine = new Integer(line).intValue();
  System.out.println(iLine);
}

Without knowing how you data is in the file, this may or may not work, but it will work if your file is like :

1
2
3
4
5

BTW, Its considered polite in these forums to acknowledge that a solution has worked for a question you have posed ... a simple "thanks, that worked" is enough. This lets other people searching this site know that a solution works for that particular problem. (I refer to your previous int array question).

Cheers

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Free Database Connection Pooling Software

http://www.primrose.org.uk

 

[skarosi]

thanks for ur reply sedj, but this doesnt seem to work. i get these errors:
C:\Documents and Settings\Ilias\My Documents\DESERTE\V103_DECODE_WITH_A\Gallager2.java:244: incompatible types
found : java.lang.Integer
required: int
iLine=new Integer(line.inValue());
^
C:\Documents and Settings\Ilias\My Documents\DESERTE\V103_DECODE_WITH_A\Gallager2.java:245: cannot resolve symbol
symbol : method inValue ()
location: class java.lang.String
iLine=new Integer(line.inValue());

I import these in the class:
import java.io.*;
import javax.swing.*;
import java.util.*;
import java.awt.*;
do i need something extra?
thanks

 

[sedj]

My code was :

 iLine = new Integer(line).intValue();

You have copied it incorrectly - you have :

iLine=new Integer(line.inValue());

which is not the same ...

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk

 

[skarosi]

yeap, that did it. cheers mate. sorry for the truble