I'm working on a Chat Client and it works all fine, but if you open the Chat Client you see a bar in the top of my frame, and if you enter your name there and you send a message it will show your name + message. But I don't want people to use certain words or characters, and I have no idea how to do that. I tried to look on the internet but couldn't find anything usefull. so this is my code of my Chat Client, also I want to send messages when you press enter but what I did, doesn't work:
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.io.*;
import java.net.*;
import java.util.*;
class Chat implements KeyListener{
JTextArea incoming;
JTextField output, name;
JButton send;
BufferedReader reader;
PrintWriter writer;
Socket sock;
public static void main(String [] args){
Chat c = new Chat();
c.Start();
}
public void Start(){
JFrame frame = new JFrame("Chat Client Alpha 1.1");
frame.setDefaultCloseOperation(frame.EXIT_ON_CLOSE);
frame.setSize(700,700);
frame.setResizable(false);
frame.setBackground(Color.black);
JPanel center = new JPanel();
JPanel south = new JPanel();
JPanel north = new JPanel();
JLabel EName = new JLabel("Enter your name: ");
incoming = new JTextArea(35,45);
send = new JButton("SEND");
send.addActionListener(new SendMessageListener());
output = new JTextField(40);
name = new JTextField(37);
name.setText("Default");
incoming.setEditable(false);
incoming.setLineWrap(true);
JScrollPane sc = new JScrollPane(incoming);
sc.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
sc.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
north.add(EName);
north.add(name);
center.add(sc);
south.add(output);
south.add(send);
north.setBackground(Color.gray);
center.setBackground(Color.gray);
south.setBackground(Color.gray);
setUpNetworking();
Thread readerThread = new Thread(new IncomingReader());
readerThread.start();
frame.getContentPane().add(BorderLayout.NORTH, north);
frame.getContentPane().add(BorderLayout.CENTER, center);
frame.getContentPane().add(BorderLayout.SOUTH, south);
frame.setVisible(true);
} private void setUpNetworking(){
try{
sock = new Socket("89.99.7.141", 5000);
InputStreamReader streamReader = new InputStreamReader(sock.getInputStream());
reader = new BufferedReader(streamReader);
writer = new PrintWriter(sock.getOutputStream());
incoming.append("Networking Established" + "\n");
}catch(IOException ex){
ex.printStackTrace();
incoming.append("Connecting Failed" + "\n");
}
}
class SendMessageListener implements ActionListener{
public void actionPerformed(ActionEvent e){
try{
writer.println("(" + name.getText() + ")" + " " + output.getText());
writer.flush();
}catch(Exception ex){
ex.printStackTrace();
}
output.setText("");
output.requestFocus();
}
}
public class IncomingReader implements Runnable{
public void run(){
String message;
try{
while((message = reader.readLine()) !=null){
System.out.println("read" + message);
incoming.append(message + "\n");
}
}catch(Exception ex){
ex.printStackTrace();
}
}
}public void keyTyped(KeyEvent e){
if (e.getKeyCode() == KeyEvent.VK_ENTER){
new SendMessageListener();
System.out.println("key typed");
}
}
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER){
new SendMessageListener();
System.out.println("key pressed");
}
}
public void keyReleased(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER){
new SendMessageListener();
System.out.println("key released");
}
}
}
Hopefully you understand what I mean. But what I mean with locking words/characters is that people can not use the word "admin" for example except for me.
Sorry for the bad English, I come from Holland.
You can use a Set containing bad words and then just test whether the typed word is present in set E.g.(hello is the bad word in example below).
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.io.*;
import java.net.*;
import java.util.*;
class Chat implements KeyListener{
JTextArea incoming;
JTextField output, name;
JButton send;
BufferedReader reader;
PrintWriter writer;
Socket sock;
Set<String> badWords = new HashSet<>(Arrays.asList("hello"));
public static void main(String [] args){
Chat c = new Chat();
c.Start();
}
public void Start(){
JFrame frame = new JFrame("Chat Client Alpha 1.1");
frame.setDefaultCloseOperation(frame.EXIT_ON_CLOSE);
frame.setSize(700,700);
frame.setResizable(false);
frame.setBackground(Color.black);
JPanel center = new JPanel();
JPanel south = new JPanel();
JPanel north = new JPanel();
JLabel EName = new JLabel("Enter your name: ");
incoming = new JTextArea(35,45);
send = new JButton("SEND");
send.addActionListener(new SendMessageListener());
output = new JTextField(40);
name = new JTextField(37);
name.setText("Default");
incoming.setEditable(false);
incoming.setLineWrap(true);
JScrollPane sc = new JScrollPane(incoming);
sc.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
sc.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
north.add(EName);
north.add(name);
center.add(sc);
south.add(output);
south.add(send);
north.setBackground(Color.gray);
center.setBackground(Color.gray);
south.setBackground(Color.gray);
setUpNetworking();
Thread readerThread = new Thread(new IncomingReader());
readerThread.start();
frame.getContentPane().add(BorderLayout.NORTH, north);
frame.getContentPane().add(BorderLayout.CENTER, center);
frame.getContentPane().add(BorderLayout.SOUTH, south);
frame.setVisible(true);
} private void setUpNetworking(){
try{
sock = new Socket("89.99.7.141", 5000);
InputStreamReader streamReader = new InputStreamReader(sock.getInputStream());
reader = new BufferedReader(streamReader);
writer = new PrintWriter(sock.getOutputStream());
incoming.append("Networking Established" + "\n");
}catch(IOException ex){
ex.printStackTrace();
incoming.append("Connecting Failed" + "\n");
}
}
class SendMessageListener implements ActionListener{
public void actionPerformed(ActionEvent e){
try {
if (badWords.contains(output.getText())) {
writer.println("(" + name.getText() + ")" + " " + "sorry bad words are not allowed");
} else if (output.getText().length() > 0){
writer.println("(" + name.getText() + ")" + " " + output.getText());
}
writer.flush();
}catch(Exception ex){
ex.printStackTrace();
}
output.setText("");
output.requestFocus();
}
}
public class IncomingReader implements Runnable{
public void run(){
String message;
try{
while((message = reader.readLine()) !=null){
System.out.println("read" + message);
incoming.append(message + "\n");
}
}catch(Exception ex){
ex.printStackTrace();
}
}
}public void keyTyped(KeyEvent e){
if (e.getKeyCode() == KeyEvent.VK_ENTER){
new SendMessageListener();
System.out.println("key typed");
}
}
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER){
new SendMessageListener();
System.out.println("key pressed");
}
}
public void keyReleased(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER){
new SendMessageListener();
System.out.println("key released");
}
}
}