Need help on coding
Hi everyone!
currently i am doing a match making project (networking). my project is almost done, the only problem left is on the clientView side which when either button clicked, it will hang the program if char is input on the age text field. i am only managed to show a "not funny" msg when the input is in negative. hope any kind soul can help mi on the coding which will give an error msg and will not hang the program if a char or float is input on the text field. thks in advance:)
ServerModel.java
import java.net.*;
import java.io.*;
import java.util.*;
public class ServerModel
{
public static void main(String[] args)
{
new ServerModel();
}
ServerView sv = new ServerView();
public ServerModel()
{
try
{
ServerSocket ss = new ServerSocket(8000);
sv.jtaLog.append("Server Started .. waiting for Client\n");
System.out.println("Server started .. waiting for Client");
int clientNo = 1;
while(true)
{
Socket connectToClient = ss.accept();
// Print the connected client number on the console
System.out.println("Start thread for client " + clientNo);
//Create a new thread for connection
HandleClient thread = new HandleClient(connectToClient);
sv.jtaLog.append("Client "+clientNo+" connected!!!\n");
//Start thread
thread.start();
// Increment clientNo
clientNo++;
}
}
catch(IOException e){
sv.jtaLog.append("Server started already! \n"+e);
}
}
class HandleClient extends Thread
{
private Socket connectToClient;
public HandleClient(Socket socket)
{
connectToClient = socket;
}
//Run the thread
public void run()
{
try
{
BufferedReader brFromClient = new BufferedReader(new InputStreamReader(connectToClient.getInputStream()));
PrintWriter pwToClient = new PrintWriter(connectToClient.getOutputStream(),true);
while(true)
{
String btn = brFromClient.readLine();// read which button clicked
if(btn.equals("Register"))
{
// recieve 4 name, age , gender, country from client
String name = brFromClient.readLine();
int age = Integer.parseInt(brFromClient.readLine());//READ LINE FROM CLIENT N ASSIGN TO NAME
String gender = brFromClient.readLine();
String country = brFromClient.readLine();
if (age<=0)
{
pwToClient.println("Not funny");
}
else {
sv.jtaLog.append("New customer registered!!\n"+name+"\n"+age+"\n"+gender+"\n"+country+"\n");
PrintWriter bw = new PrintWriter(new FileWriter("Candidate.txt", true)); //write into text file
//String success = name+"#"+age+"#"+gender+"#"+country+;
bw.println(name+"#"+age+"#"+gender+"#"+country);//write on candidate.txt
//BufferedReader brFile = new BufferedReader(new FileReader("Candidate.txt"));
//String msg0;
//while((msg0= brFile.readLine())!=null)
//bw.println(success);
bw.close();
pwToClient.println("Registered successfully!!");
}
}// end if
else {
int countFound=0;
BufferedReader brFile = new BufferedReader(new FileReader("Candidate.txt"));//READ FROM .TXT
int age = Integer.parseInt(brFromClient.readLine());//READ LINE FROM CLIENT N ASSIGN TO NAME
String gender = brFromClient.readLine();
String country = brFromClient.readLine();
String msg1;//ASSIGN TO MSG
while((msg1= brFile.readLine())!=null)
{
pwToClient.println("Continue Search");
StringTokenizer st = new StringTokenizer(msg1,"#");
String nameT=st.nextToken();//BREAK N ASSIGN
int ageT= Integer.parseInt(st.nextToken());
String genderT=st.nextToken();
String countryT=st.nextToken();
if((age == ageT) && gender.equals(genderT) && country.equals(countryT))
{
pwToClient.println("Found");
pwToClient.println(nameT);
pwToClient.println(ageT);
pwToClient.println(genderT);
pwToClient.println(countryT);
countFound++;
sv.jtaLog.append("Customer searching for...\n"+age+"\n"+gender+"\n"+country+"\n");
}
else
pwToClient.println("Not Found Yet");
}// end while
pwToClient.println("End Search");
if (countFound==0)
pwToClient.println("Record Not Found");
else
pwToClient.println("Total Records Found: "+countFound);
}// end else
}// end while
}catch (NumberFormatException e) {}
catch (IOException ex) {}
}
}
}
clientView.java
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class ClientView extends JApplet
{
private JLabel jlblName = new JLabel("Name: (For Register only)");
private JLabel jlblAge = new JLabel("Age: ");
private JLabel jlblGender = new JLabel("Gender: ");
private JLabel jlblCountry = new JLabel("Country: ");
private JLabel jlbl = new JLabel("Online Match Make", JLabel.CENTER);
private JComboBox jcboGender = new JComboBox();
private JComboBox jcboCountry = new JComboBox();
private JTextField tfName = new JTextField(6);
private JTextField tfAge = new JTextField(2);
private JTextArea jta = new JTextArea(10,5);
private JButton btnSubmit = new JButton ("Submit");
private JButton btnRegister = new JButton ("Register");
private JButton btnClear = new JButton ("Clear");
private ClientModel cm=new ClientModel();
private String s1 ="F";
private String s2 ="Singapore";
public void init()
{
setLayout(new GridLayout(4,1,5,5));
JPanel jp = new JPanel();
jp.setLayout(new GridLayout(1,1));
jp.add(jlbl);
JPanel jp1 = new JPanel();
//add(new JLabel("Online Match Make", JLabel.CENTER),BorderLayout.NORTH);
//jp1.add(new JLabel("Online Match Make", JLabel.CENTER),BorderLayout.NORTH);
jp1.setLayout(new GridLayout(4,2,5,5));
jp1.add(jlblName);
jp1.add(tfName);
tfName.setEditable(false);
tfName.setText("");
jp1.add(jlblAge);
jp1.add(tfAge);
jp1.add(jlblGender);
jp1.add(jcboGender);
jcboGender.addItem("F");
jcboGender.addItem("M");
jp1.add(jlblCountry);
jp1.add(jcboCountry);
jcboCountry.addItem("Singapore");
jcboCountry.addItem("Malaysia");
jcboCountry.addItem("Hong Kong");
JPanel jp2 = new JPanel();
jp2.setLayout(new GridLayout(1,3,20,20));
jp2.add(btnSubmit);
jp2.add(btnRegister);
jp2.add(btnClear);
JPanel jp3 = new JPanel();
jp3.setLayout(new GridLayout(1,1,10,10));
jp3.add(new JScrollPane(jta));
//jp1.add(jta);
jlblName.setForeground(Color.RED);
jlblAge.setForeground(Color.BLUE);
jlblGender.setForeground(Color.BLUE);
jlblCountry.setForeground(Color.BLUE);
add(jp);
add(jp1);
add(jp2);
add(jp3);
btnSubmit.addActionListener(new Submit());
btnRegister.addActionListener(new Register());
btnClear.addActionListener(new Clear());
}
class Submit implements ActionListener
{
public void actionPerformed(ActionEvent e)
{// tells the server Submit button is clicked
String result="";String endOfSearch="";
cm.sendToServer("Submit");
// sends age, gender, country to server
cm.sendToServer(tfAge.getText());
cm.sendToServer(s1);
cm.sendToServer(s2);
s1= (String)jcboGender.getSelectedItem();
s2= (String)jcboCountry.getSelectedItem();
// gets result from server
while (true){
endOfSearch= cm.getFromServer(); //pwToClient.println("Continue Search");
if (endOfSearch.equals("End Search")) break;
result= cm.getFromServer();
if (result.equals("Found"))
{
String name = cm.getFromServer();
String age= cm.getFromServer();
String gender= cm.getFromServer();
String country= cm.getFromServer();
jta.append("Found"+"\n");
jta.append("Name: "+name+"\n");
jta.append("Age: "+age+"\n");
jta.append("Gender: "+gender+"\n");
jta.append("Country: "+country+"\n");
}
}//end while
jta.append(cm.getFromServer()+"\n");
}
}//end of submit
public class Clear implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
/*Clearing TextFields*/
tfName.setText("");
tfAge.setText("");
jta.setText("");
}
}
public class Register implements ActionListener
{
public void actionPerformed(ActionEvent e)
{// tells the server Register button is clicked
jlblName.setForeground(Color.RED);
jlblAge.setForeground(Color.RED);
jlblGender.setForeground(Color.RED);
jlblCountry.setForeground(Color.RED);
if(tfName.getText().equals(""))
{
tfName.setEditable(true);
tfAge.setText("");
jta.setText("");
jta.append("Pls enter both Name & Age\n");
}
else
{
if (tfAge.getText().equals(""))
{
jta.append("Pls enter age\n");
}
else{
cm.sendToServer("Register");
// sends name, age, gender, country to server
cm.sendToServer(tfName.getText());
cm.sendToServer(tfAge.getText());
s1= (String)jcboGender.getSelectedItem();
s2= (String)jcboCountry.getSelectedItem();
cm.sendToServer(s1);
cm.sendToServer(s2);
String msg = cm.getFromServer();
if (msg.equals("Not funny"))
{
jta.append("Not funny");
}
else{
jta.setText("");
jta.append("Registered successfully!!");
tfName.setText("");
tfName.setEditable(false);
jlblName.setForeground(Color.RED);
jlblAge.setForeground(Color.BLUE);
jlblGender.setForeground(Color.BLUE);
jlblCountry.setForeground(Color.BLUE);
}
}
}
}
}
}
Message was edited by:
aces1799
