Reading in files from array of files

Question

I'm new to Java and am attempting to read in files from java, but I can't seem to figure out why this is happening. I'm getting IOExceptions and errors when I'm trying to read in the files. I just don't like how BufferedReader handles reading in files. I don't understand what it is attempting to do. I heard a friend mention BufferedInputStream to read in files and files from an array of files.

Question: How can I correctly, from the array of files, read in multiple files?

Comment: I realize there is no code which looks like no effort, but no matter how long I stare at java documentation, it just doesn't make sense to me. I was wondering if someone could make an example and I could study that code for BufferedStreams. From the little research I did do, I like the look of it better, and the description is better, but how do I actually do it?

Answer 1

Use my Generic readFile class. I modified it to read an array of files. It used BufferedInputStream, which needs a FileInputStream. DataInputStream takes a BufferedInputStream as a parameter, so you also need a DataInputStream. I'm not sure how to directly answer your question...its rather general but I hope this helps you.

import java.io.*;

public class Foo 
{

    public void readFile(File[] myFile) 
    {

       FileInputStream fiStream = null;
       BufferedInputStream biStream = null;
       DataInputStream diStream = null;
       foreach(File file in myFile)
       {

           try 
           {
               fiStream = new FileInputStream(file);

               biStream = new BufferedInputStream(fiStream);
               diStream = new DataInputStream(biStream);

               while (dis.available() != 0) 
               {
                System.out.println(dis.readLine());
               }

           } catch (IOException e)
           {
               e.printStackTrace();
           } finally 
           {
              try 
              {
                  fiStream.close();
                  biStream.close();
                  diStream.close();
              } catch (IOException ex)
              {
                  ex.printStackTrace();
              }
           }
       }
    }
}