ReadFile.java

//== Read a text-file ==
// Reads the contents of a text-file, and displays the contents
//=======================================================================

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;

public class ReadFile extends EasyApp     // EasyApp contains IBIO
                                           // + standard constructor stuff
{ public static void main(String[] args)
   { new ReadFile(); }                    // Instantiate an object = start program

   List display   = addList("",20,30,550,350,this);     // create a list box for display

   public ReadFile()
   {   String filename = input("File Name");

       try
       {
           BufferedReader file
             = new BufferedReader(new FileReader(filename));
                                                  // open file for reading
           String info = "";
           display.removeAll();                  // clear display list

           while (file.ready())                  // stops at end-of-file
           {
               info = file.readLine();           // read a line of text
               display.add(info);                // put text into display list
           }
           file.close();                         // close file
       }
       catch (IOException e)                     // handle IO errors, such as
       {   output(e.toString()); }               // file-not-found
   }
}