GUI layout issues

Question

hi,
i have some problems with my GUI design.
i want it to have a toolbar at the top and a split pane below it. At the moment i have a horizontal split, however, i think that the text which is being written to my pane on the right hand side is not appearing altho the scrollbar indicates that text has been written to it.
also when i click a button on my toolbar some of the toolbar becomes invisible for some reason.
www.nashie.net/program.gif
should give you an example of what i am trying to achieve with my layout.
the current relevent code is as follows (excluding textfield declarations etc):
ImageIcon downloadImage= new ImageIcon("send.gif");
JButton downloadButton = new JButton(downloadImage);
ImageIcon createImage = new ImageIcon("create.gif");
JButton createButton = new JButton(createImage);
JToolBar ToolBar = new JToolBar();
ToolBar.add(createButton);
ToolBar.add(downloadButton);
splitpane.setOneTouchExpandable(true);
splitpane.setDividerLocation(150);
Dimension minimumSize = new Dimension(100, 50);
jsp.setMinimumSize(minimumSize);
arjsp.setMinimumSize(minimumSize);
JPanel pane = new JPanel();
pane.setLayout(new BorderLayout());
pane.add(ToolBar, BorderLayout.NORTH);
pane.add(splitpane, BorderLayout.SOUTH);
setContentPane(pane);
downloadButton.addActionListener(new DownloadAction());
show();
pack();
setSize(400,400);
any ideas how to fix this?

Answer 1

import java.lang.*;
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.basic.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
//GUI design below
public class POP3a extends JFrame {
// public JButton downloadButton = new JButton(
//"Download Message");
public JLabel hostLabel = new JLabel("Host: ");
public JTextField hostField = new JTextField(40);
public JLabel userLabel = new JLabel("Username: ");
public JTextField userField = new JTextField(40);
public JLabel passwordLabel = new JLabel("Password: ");
public JPasswordField passwordField = new JPasswordField(20);
public JTextArea message = new JTextArea();
public JScrollPane jsp = new JScrollPane(message);
public JTextArea archive = new JTextArea(80, 140);
public JScrollPane arjsp = new JScrollPane(archive);
public JSplitPane splitpane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, arjsp, jsp);
public POP3a() { //This is the constructor
super("Nashies - POP3 Program"); //title bar text
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ImageIcon downloadImage= new ImageIcon("send.gif");
JButton downloadButton = new JButton(downloadImage);
ImageIcon createImage = new ImageIcon("create.gif");
JButton createButton = new JButton(createImage);
JToolBar ToolBar = new JToolBar();
ToolBar.add(createButton);
ToolBar.add(downloadButton);
splitpane.setOneTouchExpandable(true);
splitpane.setDividerLocation(150);
Dimension minimumSize = new Dimension(100, 50);
jsp.setMinimumSize(minimumSize);
arjsp.setMinimumSize(minimumSize);
JPanel pane = new JPanel();
pane.setLayout(new BorderLayout());
pane.add(ToolBar, BorderLayout.NORTH);
pane.add(splitpane, BorderLayout.SOUTH);
setContentPane(pane);
downloadButton.addActionListener(new DownloadAction());
show();
pack();
setSize(400,400);
} //end of constructor
public static void main(String args[]) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch(Exception e) {}
POP3a P = new POP3a();
} //end main
private class DownloadAction implements ActionListener {
Socket pop3_socket=null;
DataInputStream input=null;
PrintWriter output=null;
String response_string = null;
String host= new String(hostField.getText());
String user= new String(userField.getText());
String password = new String(passwordField.getText());
int count = 0;
String boundary;
public void actionPerformed (ActionEvent evt) {
try{ //open socket and request emails
// an expansion of POP3Example.java but with LIST and RETR commands
pop3_socket= new Socket(host,110);//open socket to server
output=new PrintWriter(pop3_socket.getOutputStream(),true);
input=new DataInputStream(pop3_socket.getInputStream());
response_string=input.readLine();//get response from server
message.setText(response_string);
output.println("USER " + user);
message.append("\nUSER " +user);
response_string=input.readLine();
message.append("\n" +response_string);
output.println("PASS " +password);
message.append("\nPASS **********" );
response_string=input.readLine();
message.append("\n" +response_string);
output.println("LIST");
message.append("\nLIST " );
response_string=input.readLine();
message.append(response_string);
count=0; //set count to 0
boundary = null;
// while no terminator repeat commands
while (!response_string.equals(".")) {
response_string=input.readLine();
message.append("\n"+response_string);
count++; //increment count by 1 each time
emaildownloader(); //this is the call to emaildownloader!!
output.println("QUIT");//log off server procedure
message.append("\nQUIT");
response_string=input.readLine();
message.append("\nresponse from pop3 server "
+ response_string );
pop3_socket.close();//close the POP3 socket
}// end try statement
catch (UnknownHostException e) {
message.append("response from pop3 server: "
+ "UnknownHostException " + response_string);//error message
catch (IOException e) {
message.append("response from pop3 server: "
+ "IOException "+response_string);//error message
}//end action performed
public void emaildownloader() throws IOException {
int i; //declare i
//set i to 1 to prevent RETR+0 which would return an error
for (i=1; i<count; i++) {
output.println("RETR "+i);
message.append("\nRETR "+i);
response_string=input.readLine();
message.append("\n"+response_string);
//while no terminator print email
while (!response_string.equals(".")) {
response_string=input.readLine();//read the line
int endIndex;
     if (response_string.equals("Content-Type: multipart/mixed;")) {
message.append("\n" +response_string);
     response_string=input.readLine();
boundary=response_string;
endIndex=boundary.length();
endIndex=endIndex-1;
boundary=boundary.substring(11, endIndex);
boundary=("---" +boundary);
boundary=(boundary +"--");
}//end if
//if that readline above equals the line specified
//begin attachment handling
if (response_string.equals("Content-Disposition: attachment;"))
{ //I would try to be more consistant with curly braces than
//I am here, but I am using a small window to work with
//and I couldn't keep it all on one line
response_string=input.readLine();
if (response_string.indexOf("=")>0) {
int endchar;
String filename;//declare filename
FileOutputStream fos=null;
ObjectOutputStream oos=null;
String file;//declare string
//file is equal to the substring
file = response_string.substring(10);
endchar=file.length();
endchar=endchar-1;
filename = file.substring(1, endchar);
message.append("\nFile name: " + filename);
response_string=input.readLine();
message.append("\n" +response_string);
try{
fos = new FileOutputStream (filename);
oos = new ObjectOutputStream (fos);
} catch(IOException e) {
message.append("\nProblem opening file: " +filename);
message.append("\n\tSuccessfully created the file: "
+ filename);
int linecount=0;
//the attachment handling section below
//while(!(response_string.equals(boundary)))
//{ //open while
// try{
// oos.writeObject (response_string);
// response_string=input.readLine();
// linecount++;
// catch(IOException e)
// message.append("\nProblem writing to file: "
// +filename);
// message.append("at line " +linecount);
//}//close while
response_string=input.readLine();
message.append("\n boundary is currently set to: "
+boundary);
}//close if
else { // open else
//again split 'cause my window is too small
message.append("there is an error with the attachment "
+ "handling");
} // close else
response_string=input.readLine();
} //close if
message.append("\n"+response_string);
} //close while ! '.'
} //end for loop
} // close emaildownloader()
} //end DownloadAction
} //end POP3 class
The GUI is highly unstable and the text which should go in the JTextArea called 'message' doesn't get displayed (please note as I am switching my old layout etc over to a new one there is no way of entering hostname, username, password so the response from POP server should be 'response from pop3 server: IOException null' and that should get displayed in 'message' any ideas why the GUI is so screwed up?