Getting character inputs from FileReader in Java.

byteframe · 04-11-2006, 11:15 AM

In java I'm thinking that using FileReader to open a file and read the contents in the right way to go, but for some reason my FileReader object's read() method only returns and int corresponding to what that character is. I need the information from a text file for the declarations of other variables. How would I go about doing this? I fiqured I'd try System.out.println()-ing the information, but again it only spits out the interger value of the characters....ANy suggestions? THank yuo very much.

paulsm4 · 04-11-2006, 12:59 PM

Here's a quick'n'dirty example that might help:

Code:

import java.io.*;

public class psm060411a
{

  public static void main (String[] args)
  {
    // Check arguments
    if (args.length != 1) {
      System.out.println ("USAGE: test <filename>!");
      return;
    }

    // Open file
    BufferedReader in;		
    try {
      in = new BufferedReader (new FileReader (args[0]));
      String s;
      while ((s = in.readLine ()) != null) {
        System.out.println (s);
      }
      in.close();		
    }
    // Error handler
    catch (IOException e) {
      System.err.println ("Read file error: " + e.getMessage ());
    }
    System.out.println ("Hasta la bye bye!");
  }	
}

Here's corresponding sample output:

Quote:

C:>javac -Xlint:all psm060411a.java

C:>java psm060411a
USAGE: test <filename>!

C:>java psm060411a psm060411a.java
import java.io.*;

public class psm060411a
{

public static void main (String[] args)
{
// Check arguments
...
}
System.out.println ("Hasta la bye bye!");
}
}
Hasta la bye bye!

C:>

'Hope that helps .. PSM