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File I/O



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Arnab Sarkar
File I/O
1 Answer(s)      8 years ago
Posted in : Java Beginners
View Answers

February 12, 2009 at 1:40 AM

Hi Arnab,
Please check the following code. Run this code at command line and send a text file as argument.

import java.util.ArrayList;

public class FirstWords{

public static void main(String args[]){
try {
File fileName = new File(args[0]);
if(fileName.isFile()) {
BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(fileName),"US-ASCII"));
String line = "";
ArrayList list = new ArrayList();
while((line=reader.readLine())!=null) {
String firstWord = line.substring(0,line.indexOf(" "));
System.out.println("The first words are::" + list.toString());
} catch(IOException ioe) {
System.out.println("ERROR::" + ioe.getMessage());
} catch(Exception ex) {
System.out.println("ERROR::" + ex.getMessage());

Happy programming.

Y. Keerthi Sagar.


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