Why does saving text from a jtextarea to a text file result in....?

Question

one long string that includes square blocks when the new line should be?
Why can't I read normal text from a text file. It looks like i have to save it first for it to be read.
Also why is it that my application succesfully reads and displays the contents of a text file that i just saved but when i manually open that file I don't see it. All i can see is what the text that i manually entered into the text file.
I use a buffered reader so wondered if there was some caching but have no idea.

Answer 1

one long string that includes square blocks when the new line should be? If you use something like:
write(textArea.getText())
then "\n" will be written to the file as a newline string, but on a Windows platform the newline string is "\r\n".
You should be using the read(...) and write(...) methods of the JTextArea and the newline string will be handled correctly.
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
class TextAreaLoad
     public static void main(String a[])
          final JTextArea edit = new JTextArea(5, 40);
          JButton read = new JButton("Read some.txt");
          read.addActionListener( new ActionListener()
               public void actionPerformed(ActionEvent e)
                    try
                         FileReader reader = new FileReader( "some.txt" );
                         BufferedReader br = new BufferedReader(reader);
                         edit.read( br, null );
                         br.close();
                         edit.requestFocus();
                    catch(Exception e2) { System.out.println(e2); }
          JButton write = new JButton("Write some.txt");
          write.addActionListener( new ActionListener()
               public void actionPerformed(ActionEvent e)
                    try
                         FileWriter writer = new FileWriter( "some.txt" );
                         BufferedWriter bw = new BufferedWriter( writer );
                         edit.write( bw );
                         bw.close();
                         edit.setText("");
                         edit.requestFocus();
                    catch(Exception e2) {}
          JFrame frame = new JFrame("TextArea Load");
          frame.getContentPane().add( new JScrollPane(edit), BorderLayout.NORTH );
          frame.getContentPane().add(read, BorderLayout.WEST);
          frame.getContentPane().add(write, BorderLayout.EAST);
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.pack();
          frame.setLocationRelativeTo( null );
          frame.setVisible(true);
}