Java.net.ConnectException: Connection refused: connect?

[gedalyahu]

Please help, when ever I run this program it works. But it gives an java.net.ConnectException: Connection refused: connect. How do you fix this. I know the coding it correct and everything this. Also I checked my firewall and everything! Thanks!!



package p6;

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

public class StudentClient extends JApplet {
private JTextField jtfName = new JTextField(32);
private JTextField jtfStreet = new JTextField(32);
private JTextField jtfCity = new JTextField(20);
private JTextField jtfState = new JTextField(2);
private JTextField jtfZip = new JTextField(5);

// Button for sending a student to the server
private JButton jbtRegister = new JButton("Register to the Server");

// Indicate if it runs as application
private boolean isStandAlone = false;

// Host name or ip
String host = "localhost";

public void init() {
// Panel p1 for holding labels Name, Street, and City
JPanel p1 = new JPanel();
p1.setLayout(new GridLayout(3, 1));
p1.add(new JLabel("Name"));
p1.add(new JLabel("Street"));
p1.add(new JLabel("City"));

// Panel jpState for holding state
JPanel jpState = new JPanel();
jpState.setLayout(new BorderLayout());
jpState.add(new JLabel("State"), BorderLayout.WEST);
jpState.add(jtfState, BorderLayout.CENTER);

// Panel jpZip for holding zip
JPanel jpZip = new JPanel();
jpZip.setLayout(new BorderLayout());
jpZip.add(new JLabel("Zip"), BorderLayout.WEST);
jpZip.add(jtfZip, BorderLayout.CENTER);

// Panel p2 for holding jpState and jpZip
JPanel p2 = new JPanel();
p2.setLayout(new BorderLayout());
p2.add(jpState, BorderLayout.WEST);
p2.add(jpZip, BorderLayout.CENTER);

// Panel p3 for holding jtfCity and p2
JPanel p3 = new JPanel();
p3.setLayout(new BorderLayout());
p3.add(jtfCity, BorderLayout.CENTER);
p3.add(p2, BorderLayout.EAST);

// Panel p4 for holding jtfName, jtfStreet, and p3
JPanel p4 = new JPanel();
p4.setLayout(new GridLayout(3, 1));
p4.add(jtfName);
p4.add(jtfStreet);
p4.add(p3);

// Place p1 and p4 into StudentPanel
JPanel studentPanel = new JPanel(new BorderLayout());
studentPanel.setBorder(new BevelBorder(BevelBorder.RAISED));
studentPanel.add(p1, BorderLayout.WEST);
studentPanel.add(p4, BorderLayout.CENTER);

// Add the student panel and button to the applet
add(studentPanel, BorderLayout.CENTER);
add(jbtRegister, BorderLayout.SOUTH);

// Register listener
jbtRegister.addActionListener(new ButtonListener());

// Find the IP address of the Web server
if (!isStandAlone)
host = getCodeBase().getHost();
}

/** Handle button action */
private class ButtonListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
try {
// Establish connection with the server
Socket socket = new Socket(host, 5000);

// Create an output stream to the server
ObjectOutputStream toServer =
new ObjectOutputStream(socket.getOutputStrea…

// Get text field
String name = jtfName.getText().trim();
String street = jtfStreet.getText().trim();
String city = jtfCity.getText().trim();
String state = jtfState.getText().trim();
String zip = jtfZip.getText().trim();

// Create a Student object and send to the server
StudentAddress s =
new StudentAddress(name, street, city, state, zip);
toServer.writeObject(s);
}
catch (IOException ex) {
System.err.println(ex);
}
}
}

/** Run the applet as an application */
public static void main(String[] args) {
// Create a frame
JFrame frame = new JFrame("Register Student Client");

// Create an instance of the applet
StudentClient applet = new StudentClient();
applet.isStandAlone = true;

// Get host
if (args.length == 1) applet.host = args[0];

// Add the applet instance to the frame
frame.add(applet, BorderLayout.CENTER);

// Invoke init() and start()
applet.init();
applet.start();

// Display the frame
frame.pack();
frame.setVisible(true);
}
}

[adalwine]

This exception occurs when the service your are trying to connect to, is NOT running...

Check that you do a listener running on port number 5000 on your local machine.