Browse a file in java

[Remedy]

Hello,
I want to browse a file and to replace some lines of words by others, is it possible in Java to parse a file line by line ? I know another solution that does not suit me at the moment c open another file where I copy it line by line the contents of the initial file (by not putting much on the lines changed from File out) but it cost me a lot. Can you help me to do otherwise? Any help on this topic on this will be highly appreciated.

[WinDoWLoCuS]

Hello,
Just have a look at the below example, may be it will help you.

while ((line = bf.readLine()) != null) {
System.out.System.out.println(line);
/ / do your coding here 
}

line is a String so you can do all the handling specific to that object (replacing the word by making the other party ) Just try it and then if you have any problem do post back.

[SoftWore]

Hello,
Topic multiple times. In short, if the old chain has the same size as the new channel, you can content yourself to work directly on the original file. Otherwise, you have no choice but to go through another file. This is not a limitation of Java, but applies to all programming languages. In what sense is it costing you a lot? If you describe your problem precisely, then it will be better for us to understand and interpret like wise.

[Remedy]

Hi,
Thank you for the answer already. But this is not what I actually want. I'll explain better, I want to retrieve the current row

that is line is a String

The change (with a line.replaceAll (...)) for example and replace the current line from the file by the line that I just modified, in other words use a single file for make the read / modify rows.

[Logan 2]

Hello,
Even I have some similar problems with my code. The words change in the line being played are not bulky. This cost me to rewrite in another file. for the simple reason that staying in the same directory:
1) I'll have to name the file created by another name,
2) Finish the transfer, then transfer the old file that has been traveled.
3) Then rename the one I just created with the name of the file I deleted.
And c ca is expensive for me. If I can directly bump on a single file and save it to take into account changes in the lines I made this is super easy and fast at the same time.

[Remedy]

Hello,
This is my code, please have a look at it, if i am wrong somewhere then guide me.

Public static void readReplace(String fileName, String oldPattern, String replPattern)
	{
			String ln;
StringBuffer sb = new StringBuffer();
			try {
			FileInputStream fis = new FileInputStream(fileName);
BufferedReader rd = new BufferedReader(new InputStreamReader(
			fis));
			while ((ln = rd.readLine()) != null)
			{
				ln = ln.toLowerCase();
ln = ln.replaceAll(oldPattern.toLowerCase(), replPattern);
sb.append(ln + "\ n");
			}
				rd.close();
BufferedWriter ot = new BufferedWriter(new FileWriter(fileName));
ot.write(sb.function toString() {
    [native code]
}());
ot.close();
 
			} catch (Exception e) {
			}
			
	}