problems trying to view the contents of a text file in JTextArea

> maybe try adding a jta.validate(); after the

> jta.setText("");

I don't think there's any need to validate the text area after calling setText.

Is your file perhaps empty?

Try adding a few System.out.println, e.g. print out each line as it is being read and print out sw.toString().

dwga at 2007-7-29 11:59:49 >

hello dwg.

the Order.txt file is not empty. it has an empty line at the top, and "2 Battlestar Galactica Xbox 360 Games" and "12 Scooter Mind the Gap CDs" on separate lines beneath the empty line on the top. do you have any suggestions on how i should get the program to do what it should?

james-mcfaddena at 2007-7-29 11:59:49 >

Functioning code follows. The problem was the large values passed to the JTextArea constructor, combined with no sensible layout manager defined for the panel the JTextArea was being added to.

import java.awt.BorderLayout;

import java.awt.event.*;

import java.awt.*;

import javax.swing.*;

import java.io.*;

public class ViewOrder extends JFrame{

JPanel pnlText, pnlBody, pnlFooter;

JButton btnViewOrder;

JButton btnReturnToOrderSystem;

JLabel jl;

JTextArea jta;

Container contentpane;

public ViewOrder(){

super("View Order");

contentpane = getContentPane();

contentpane.setLayout(new BorderLayout());

pnlText = new JPanel();

pnlBody = new JPanel();

pnlBody.setLayout(new BorderLayout());

pnlFooter = new JPanel();

jta = new JTextArea();

jta.setFont(new Font("Serif", Font.PLAIN, 14));

// Set lineWrap and wrapStyleWord true for the text area

jta.setLineWrap(true);

jta.setWrapStyleWord(true);

jta.setEditable(false);

jl = new JLabel("Text retrieved from file:");

btnViewOrder = new JButton("View Order");

btnReturnToOrderSystem = new JButton("Return to Order System Menu");

pnlText.add(jl);

JScrollPane jsp = new JScrollPane(jta);

pnlBody.add(jsp, BorderLayout.CENTER);

pnlFooter.add(btnViewOrder);

pnlFooter.add(btnReturnToOrderSystem);

contentpane.add(pnlText, BorderLayout.NORTH);

contentpane.add(pnlBody, BorderLayout.CENTER);

contentpane.add(pnlFooter, BorderLayout.SOUTH);

setSize(500, 500);

setVisible(true);

btnViewOrder.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

//Read from file

try{

FileInputStream in = new FileInputStream("Order.txt");

BufferedReader iS = new BufferedReader(new InputStreamReader(in));

StringWriter sw = new StringWriter();

PrintWriter out = new PrintWriter(sw);

String il;

while((il = iS.readLine()) != null){

out.println(il);

}

out.flush();

jta.setText(sw.toString());

in.close();

iS.close();

sw.close();

out.close();

}

catch(java.io.IOException ex){

System.out.println("Cannot read from file");

}

}

});

btnReturnToOrderSystem.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

setVisible(false);

//OrderSystem os = new OrderSystem();

//os.setVisible(true);

}

});

}

public static void main(String[] args){

new ViewOrder();

}

}

Message was edited by:

mbmerrill

mbmerrilla at 2007-7-29 11:59:49 >