Java Problem (C++ Learning Community)

Title: Java Problem

Rmstn1580 - January 3, 2007 06:29 AM (GMT)

I'm attempting to create a program that acts as a server, and when it gets connections from a client, it sends the text and the client opens a new window and displays the text. I got it to connect and send and everything, but the text says "84" instead of what it's supposed to say. I don't know if that's a problem with the bytes or what. Well, here's my code. I've taken out a few of the non-needed classes.

Server code

CODE

package halturnerserver;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.lang.Thread.*;
import java.io.*;

class Window extends JFrame {
Window() {
super("Server Control");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Content x = new Content();

add(x);

pack();
setVisible(true);
}
}

class Content extends JPanel implements ActionListener {
JPanel row1 = new JPanel();
JPanel row2 = new JPanel();
JLabel status = new JLabel("Disconnected");
JButton connect = new JButton("Connect");
JButton disconnect = new JButton("Disconnect");

Content() {
GridLayout gl = new GridLayout(1, 2, 1, 1);
FlowLayout center = new FlowLayout(FlowLayout.CENTER);
setLayout(gl);

row1.setLayout(center);
row2.setLayout(center);

connect.setEnabled(true);
disconnect.setEnabled(false);

connect.addActionListener(this);
disconnect.addActionListener(this);

row1.add(status);
row2.add(connect);
row2.add(disconnect);

add(row1);
add(row2);
}

public void actionPerformed(ActionEvent evt) {
Object o = evt.getSource();
Server s = new Server();
try {
if(o == connect) {
connect.setEnabled(false);
disconnect.setEnabled(true);
status.setText("Connected");
s.start();
s.setPriority(10);
}
if(o == disconnect) {
connect.setEnabled(true);
disconnect.setEnabled(false);
status.setText("Disconnected");
s.join();
}
}catch(InterruptedException e) {
Error x = new Error(e.toString());
}
}
}

class Server extends Thread {
public void run() {
while(true) {
try {
int port = 4321;
ServerSocket ss = new ServerSocket(port);
while(true) {
Socket s = ss.accept();

OutputStream os = s.getOutputStream();
DataOutputStream dos = new DataOutputStream(os);
dos.writeBytes("This is a test");

s.close();
}
}
catch(Exception e) {
Error x = new Error(e.toString());
}
}
}
}

class Main {
public static void main(String args[]) {
Window x = new Window();
}
}

Client code

CODE

package halturnerclient;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.lang.Thread.*;
import javax.swing.ImageIcon.*;
import java.io.*;

class Error extends JFrame implements ActionListener {
JButton ok = new JButton(" Ok ");
Error(String text) {
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

JPanel row1 = new JPanel();
JPanel row2 = new JPanel();
JLabel message = new JLabel(text);

GridLayout gl = new GridLayout(2, 1, 1, 1);
setLayout(gl);
FlowLayout center = new FlowLayout(FlowLayout.CENTER);

row1.setLayout(center);
row2.setLayout(center);

ok.addActionListener(this);

row1.add(message);
row2.add(ok);

add(row1);
add(row2);

pack();
setVisible(true);
}

public void actionPerformed(ActionEvent evt) {
Object o = evt.getSource();
if(o == ok) {
setVisible(false);
}
}
}

class Window extends JFrame {
Window() {
super("Hal Turner Show");
setSize(300, 150);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Content x = new Content();

add(x);

setVisible(true);
}
}

class Content extends JPanel implements ActionListener {
Font titleFont = new Font("Dialog", Font.BOLD, 16);
JPanel infoRow = new JPanel();
JPanel buttonRow = new JPanel();
JMenuBar menuBar = new JMenuBar();
JMenu menu = new JMenu("File");
JMenuItem about = new JMenuItem("About");
JMenuItem help = new JMenuItem("Help");
JButton connect = new JButton("Receive Data");
JLabel message = new JLabel("No data has been sent for");

Content() {
BorderLayout bl = new BorderLayout();
setLayout(bl);
FlowLayout center = new FlowLayout(FlowLayout.CENTER);
FlowLayout left = new FlowLayout(FlowLayout.LEFT);

infoRow.setLayout(left);
buttonRow.setLayout(center);

connect.addActionListener(this);

infoRow.add(message);
buttonRow.add(connect);

help.addActionListener(this);
about.addActionListener(this);
menu.add(help);
menu.add(about);
menuBar.add(menu);

add(menuBar, BorderLayout.NORTH);
add(infoRow, BorderLayout.SOUTH);
add(buttonRow, BorderLayout.WEST);

setVisible(true);
}

public void actionPerformed(ActionEvent evt) {
Object o = evt.getSource();
Client c = new Client();
try {
if(o == connect) {
message.setText("Data has been sent for");
c.start();
}
if(o == about) {
About a = new About();
}
if(o == help) {
Help h = new Help();
}
}catch(Exception e) {
Error x = new Error(e.toString());
}finally {
try {
c.join();
}catch(Exception e) {
Error er = new Error(e.toString());
}
}
}
}

class Client extends Thread {
public void run() {
try {
String server = "127.0.0.1";
int port = 4321;

Socket s = new Socket(server, port);

InputStream is = s.getInputStream();
DataInputStream dis = new DataInputStream(is);
byte i = dis.readByte();
Byte b = new Byte(i);

//Info info = new Info(b.toString());
Error y = new Error(b.toString());

s.close();
}catch(Exception e) {
Error x = new Error(e.toString());
}
}
}

class Info extends JFrame {
Info(String text) {
super("Received Text from Server");
setSize(300, 300);
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

JPanel row = new JPanel();
JLabel dataArea = new JLabel(text);

FlowLayout center = new FlowLayout(FlowLayout.CENTER);
setLayout(center);
row.setLayout(center);

row.add(dataArea);

add(row);

setVisible(true);
}
}

class Main {
public static void main(String args[]) {
Window x = new Window();
}
}

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