[nicool]

I am reading file line by line using bufferedReader in java.
My file contains very long lines (about 913434 characters per line).

FileInputStream inStream=new FileInputStream(inFile);
DataInputStream inDataStream=new DataInputStream(inStream);
BufferedReader br=new BufferedReader(new InputStreamReader(inDataStream));

String str=null;
while ((str = br.readLine()) !=null){
         System.out.println(str);
}

But it's always give some portion of line . It's failed to read whole line.
Please , help me on How to read whole line ?

Thanks,

This post has been edited by smohd: 07 November 2011 - 03:45 AM
Reason for edit:: code tags added

[Veitch]

Maybe it helps to specifiy a bigger buffer size:

new BufferedReader(new InputStreamReader(inDataStream), size)

[nicool]

I tried this also but no any effect.....

[Veitch]

Are you sure that your console is not just breaking the line itself?
Are you sure that you have no carriage return or linefeed in the line?

[g00se]

Please post example file

[cfoley]

I tried this which generates a file with a few line a million characters long. Then it reads them using your method and prints the line lengths. It works fine. Maybe there is something up with your file or maybe veitch is right that the console isn't displaying the lines correctly.

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;


public class BigLineReader {
	
	public static void main(String[] args) throws IOException {
		BigLineReader test = new BigLineReader();
		File f = test.createFile();
		test.analyseFile(f);
		
	}

	File createFile() throws IOException {
		File f = File.createTempFile("BigFileTest", ".tmp");
		f.deleteOnExit();
		String str = bigString(1000000);
		PrintWriter out = new PrintWriter(f);
		for(int i = 0; i < 10; i++) {
			out.println(str);
		}
		out.close();
		return f;
	}

	String bigString(int size) {
		StringBuilder b = new StringBuilder(size);
		for(int i = 0; i < size; i++) {
			b.append(i%10);
		}
		return b.toString();
	}

	void analyseFile(File f) throws IOException {
		FileInputStream inStream=new FileInputStream(f);
		DataInputStream inDataStream=new DataInputStream(inStream);
		BufferedReader br=new BufferedReader(new InputStreamReader(inDataStream));

		String str=null;
		while ((str = br.readLine()) !=null){
			System.out.println(str.length());
		}

		br.close();
		inDataStream.close();

	}

}

Also, your line is almost a million character long. How can you tell the difference by looking weather it's all there or if only most of it is there?

[nicool]

Sorry @all!! :-)
Problem is just because of i forgot to close FileWriter object.....
Now its working correctly....
Thanks for your Suggestions...

This post has been edited by nicool: 07 November 2011 - 11:34 AM