Solved

get tab delimited data from txt file in java

Posted on 2009-05-10
8
506 Views
Last Modified: 2013-12-22
Hi,

I want to extract tab delimited data from a text file which consists of integers.
I wrote the code for it but not able to get each integer and next line in the text file.

I pasted my code as well as text file..

import java.io.*;
 
public class HeapSort {
 
	public void readData(String filename)  throws Exception {
  		BufferedReader bin = new BufferedReader(new FileReader(filename));
  		
  			String s;
  		
  			s = bin.readLine();
  			while((s) != null)
  			{
  				String[] input = s.split("\t");
    		
    		
  				if (input == null) 
  				{
  					System.err.println( "No data found in the data file: " + filename + "\n");
  				}
 
    		
  				for(int i=0;i<input.length;i++)
  				{
  					System.out.println(input[i]);
  				}
    		
  				s = bin.readLine();
  			} // end of while loop
 
  			
    		bin.close();
 
    		
 
 
	}	// End of function readData
	
	
	public static void main(String[] args) throws Exception
	{
		HeapSort h = new HeapSort();
		h.readData("C:\\Users\\nnnn\\workspace\\HeapSort\\data2.txt");
		
	}
	
}

Open in new window

data2.txt
0
Comment
Question by:mmonline
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 3
8 Comments
 
LVL 86

Expert Comment

by:CEHJ
ID: 24349226
What problem are you having?
0
 

Author Comment

by:mmonline
ID: 24349230
Actually, I am not getting any output from this code..

i donot know if my code is correct or not.
0
 
LVL 86

Accepted Solution

by:
CEHJ earned 500 total points
ID: 24349232
Try instead the following (your file is space-delimited - but the code i posted will work for any whitespace)
String[] input = s.split("\\s+");

Open in new window

0
Creating Instructional Tutorials  

For Any Use & On Any Platform

Contextual Guidance at the moment of need helps your employees/users adopt software o& achieve even the most complex tasks instantly. Boost knowledge retention, software adoption & employee engagement with easy solution.

 

Author Comment

by:mmonline
ID: 24349242
thank you so much.. I ran it and i am able to get first line of data but not all the lines in the text file..
I mean i donot know how to read the next line in the file
0
 

Author Comment

by:mmonline
ID: 24349257
Hey.. I am sorry I got the output.. ur answer is correct
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 24349267
You can tell what the command line one is by doing the following, and what Eclipse's is by looking at the .classpath file
    out.println("public class HelloWorld {");
    out.println("  public static void main(String args[]) {");
    out.println("    System.out.println(\"This is in another java file and here is the classpath\");");
    out.println("    System.out.println(System.getProperty(\"java.class.path\"));");
    out.println("  }");
    out.println("}");
    out.close();

Open in new window

0
 
LVL 86

Expert Comment

by:CEHJ
ID: 24349274
Oops sorry - posted that in the wrong Q
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 24349497
:-)
0

Featured Post

Instantly Create Instructional Tutorials

Contextual Guidance at the moment of need helps your employees adopt to new software or processes instantly. Boost knowledge retention and employee engagement step-by-step with one easy solution.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
Introduction This article is the second of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers the basic installation and configuration of the test automation tools used by…
Viewers learn about the third conditional statement “else if” and use it in an example program. Then additional information about conditional statements is provided, covering the topic thoroughly. Viewers learn about the third conditional statement …
Viewers will learn about basic arrays, how to declare them, and how to use them. Introduction and definition: Declare an array and cover the syntax of declaring them: Initialize every index in the created array: Example/Features of a basic arr…
Suggested Courses

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question