943,572 Members | Top Members by Rank

Ad:
  • Java Discussion Thread
  • Unsolved
  • Views: 18278
  • Java RSS
Sep 10th, 2003
1

How do you output to the screen?

Expand Post »
Ok here is a program I am working on for an assignment.


import java.io.*;

public class Copy {
public static void main(String[] args) throws IOException {
File inputFile = new File("p1.txt");
File outputFile = new File("p2.txt");

FileReader in = new FileReader(inputFile);
FileWriter out = new FileWriter(outputFile);
int c;

while ((c = in.read()) != -1)
out.write(c);

in.close();
out.close();
}
}

Now it works fine and everything, the problem is that I want it to print the outputFile to the screen when I run the application. And I can't figure out how! Our teacher would only say that it has something to do with a buffered reader, and I have never been very talented at those. :cry: If anyone could help with this I would really appreciate it.
Similar Threads
Reputation Points: 11
Solved Threads: 0
Newbie Poster
MyrrhLynn is offline Offline
4 posts
since Sep 2003
Sep 10th, 2003
1

Re: How do you output to the screen?

Can't you use System.out.println somehow?
Team Colleague
Reputation Points: 15
Solved Threads: 2
Junior Poster
whipaway is offline Offline
124 posts
since Feb 2002
Sep 11th, 2003
0

Re: How do you output to the screen?

yeah "somehow" but I don't "knowhow" Someone suggested a try block?
Reputation Points: 11
Solved Threads: 0
Newbie Poster
MyrrhLynn is offline Offline
4 posts
since Sep 2003
Sep 14th, 2003
0
Re: How do you output to the screen?
Well I figured that part out! I had to use a buffered reader. Now I am stuck again though. I have read the data and divided it up with substring(num,num) like it needs to be and trimmed of the extra space. I have a while loop doing this but I can't figure out how to make the while loop do the whole file. Right now I have it using a counter but that won't work for the whole thing.

here it is: any suggestions for what the while condition should be?
import java.io.*;
import java.util.*;
import java.text.*;
import javax.swing.*;
import java.awt.font.*;
import java.awt.*;

public class Copy3 {
public static void main(String[] args) throws IOException {


BufferedReader input = new BufferedReader( new FileReader( "fruits.dat" ));
StringBuffer buffer = new StringBuffer();
String text;
String complete;
String idstring;
String statestring;
String datestring;
String fruitstring;
String gradestring;
String coststring;
String otheroutput;
int counting;
counting = 1;
//otheroutput=input.readLine();


while (counting != 6) {
complete=input.readLine();
if (complete.substring(0,1).equals(" ") )
{
fruitstring=complete.substring(10,20);
fruitstring=fruitstring.trim();
gradestring=complete.substring(20,22);
gradestring=gradestring.trim();
coststring=complete.substring(22,30);
coststring=coststring.trim();
System.out.println(fruitstring);
System.out.println(gradestring);
System.out.println(coststring);
}


else
{
idstring=complete.substring(0,10);
statestring=complete.substring(10,12);
datestring=complete.substring(12,20);
System.out.println(idstring);
System.out.println(statestring);
System.out.println(datestring);
}

//otheroutput=input.readLine();

counting=counting + 1;

}
}
}
Reputation Points: 11
Solved Threads: 0
Newbie Poster
MyrrhLynn is offline Offline
4 posts
since Sep 2003
Oct 20th, 2003
1

Re: How do you output to the screen?

I may be reading your question wrong, and I know you are close to getting it the other way, but this is how I would do it.

public void readFile()
{
String fileName = "INPUT_FILE_NAME", readLine;

// Will read until the end of the file, if it exists \\
try
{
BufferedReader in = new BufferedReader(
new FileReader( fileName ) );
readLine = in.readLine();

while ( readLine != null )
{
System.out.println( readLine );
readLine = in.readLine();
}
in.close();
}

// If file does not exist \\
catch ( IOException iox )
{
System.out.print("File Not Found");
}
}
Reputation Points: 11
Solved Threads: 0
Newbie Poster
Mattg1981 is offline Offline
1 posts
since Oct 2003
Nov 2nd, 2003
0

Re: How do you output to the screen?

lol, reading your first post's code I was saying to myself "BUFFEREDREADER!!!!" But I see you already got it. GJ! and GL.
Reputation Points: 10
Solved Threads: 0
Newbie Poster
Dynam1cz is offline Offline
4 posts
since Nov 2003

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.
Message:
Previous Thread in Java Forum Timeline: Creating the piglatin version of a string
Next Thread in Java Forum Timeline: User clicked no on a java applet from IBM





About Us | Contact Us | Advertise | Acceptable Use Policy
Forum Index | Build Custom RSS Feed


Follow us on Twitter


© 2011 DaniWeb® LLC