problem in loading interface

Discussion in 'Software' started by getmeappu, Apr 16, 2012.

  1. getmeappu

    getmeappu

    Joined:
    Apr 16, 2012
    Messages:
    1
    I am trying to create chating system in java using nio channels.I created simple gui for client login and registration .i also used databse for storing client detailes.but whn i click on the login button ,the chating frame does not appear.

    here is my client-login code

    import javax.swing.*;
    import java.sql.*;
    import java.awt.*;
    import DataBase.DBConnection;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.awt.image.BufferedImage;
    import java.io.File;
    import java.io.IOException;
    import java.util.logging.Level;
    import java.util.logging.Logger;
    import javax.imageio.ImageIO;
    public class Client_login extends JFrame
    {
    JButton login,Register;
    JLabel label1,label2,label3;
    JTextField text1,text2,text3;
    DBConnection dbc=new DBConnection();
    ResultSet rs=null;
    int flag=0;
    ImageIcon image = new ImageIcon( "Desert.jpg" );
    JPanel jPanel1=new JPanel();
    public Client_login()
    {
    setTitle("Login Form");

    setLayout(null);


    label1=new JLabel();
    label1.setText("Username");
    text1=new JTextField(15);
    label2=new JLabel();
    label2.setText("Password");
    text2=new JPasswordField(15);
    label3=new JLabel();
    text3=new JTextField(15);
    login=new JButton("Login");
    Register=new JButton("Register");
    label3.setText("ServerIP");
    label3.setBounds(100,70,100,20);
    text3.setBounds(200,70,200,20);
    label1.setBounds(100,100,100,20);
    text1.setBounds(200,100,200,20);
    label2.setBounds(100,130,100,20);
    text2.setBounds(200,130,200,20);
    login.setBounds(130,169,100,20);
    Register.setBounds(240, 169, 100,20);
    add(label1);
    add(text1);
    add(label2);
    add(text2);
    add(login);
    add(Register);
    add(label3);add(text3);

    setVisible(true);
    setSize(500,400);

    login.addActionListener(new ActionListener(){

    public void actionPerformed(ActionEvent ae)
    {

    String value1=text1.getText();
    String value2=text2.getText();
    String uname=null;String pass=null;
    System.out.println(value1+""+value2);
    if(value1.equals("")|value2.equals(""))
    JOptionPane.showMessageDialog(rootPane, "Enter username and password");
    else{
    try
    {
    String sql="select * from Client_registration where usrname='"+value1+"' and password='"+value2+"'";
    rs=dbc.select(sql);
    if(rs.next())
    {
    uname=rs.getString("usrname");
    pass=rs.getString("password");
    System.out.println("from database"+uname);
    try
    {
    setVisible(false);
    ChatClient cc=new ChatClient(uname,"localhost");
    System.out.println("from database "+uname);
    //OnLineUsers ous=new OnLineUsers(uname,"localhost");
    //Client_form cf=new Client_form(uname,"localhost");
    try {
    BufferedImage image = null;

    //frame.setIconImage(Toolkit.getDefaultToolkit().getImage("chat.gif"));
    // image = ImageIO.read(cf.getClass().getResource("chat.gif"));
    //cf.setIconImage(image);

    }catch(Exception e)
    {

    }

    } catch (Exception ex) {
    Logger.getLogger(Client_login.class.getName()).log(Level.SEVERE, null, ex);
    }
    //JOptionPane.showMessageDialog(rootPane, "Login successfully");
    }
    else{
    JOptionPane.showMessageDialog(rootPane, "Invalid login");
    text1.setText("");
    text2.setText("");
    }


    }
    catch(SQLException e){

    }}
    }
    });

    Register.addActionListener(new ActionListener(){

    public void actionPerformed(ActionEvent ae)
    {
    Client_register cr=new Client_register();

    }

    });
    }



    //ImageIcon image = new ImageIcon( "C:/rose.jpg" );

    public static void main(String[] args) {
    //new Client_login();

    Client_login frame=new Client_login();
    try {
    BufferedImage image = null;

    //frame.setIconImage(Toolkit.getDefaultToolkit().getImage("chat.gif"));
    image = ImageIO.read(frame.getClass().getResource("chat.gif"));
    frame.setIconImage(image);

    }
    catch(Exception e){

    }

    try{

    BufferedImage image = ImageIO.read(frame.getClass().getResource("Desert.gif"));
    JLabel myLabel = new JLabel();
    myLabel = new JLabel(new ImageIcon(image));
    frame.getContentPane().add(myLabel);
    }
    catch(Exception e){

    }
    }
    }



    and my chating_frame code is
    import java.awt.FlowLayout;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.util.logging.Level;
    import java.util.logging.Logger;
    import javax.swing.*;
    import DataBase.DBConnection;
    import java.sql.*;

    /**
    *
    * @author appuraj.kr
    */
    public class ChatClient extends JFrame implements ActionListener
    {
    public String uname;
    public JTextArea taMessages;
    public JTextField tfInput;
    public JButton btnSend,btnExit;
    public BufferedReader br;

    int k=0;
    int f=0;
    int flag=0;
    ResultSet rs=null;
    ResultSet rs1=null;
    String sql=null;
    String user_name=null;
    // DBConnection dbc=new DBConnection();
    //Client_start cst=new Client_start();
    String sname=null;

    public ChatClient(String uname,String servname) throws IOException
    {

    super(uname); // set title for frame
    this.uname = uname;

    sname=servname;


    //System.out.println(this.uname);





    // br=new BufferedReader(new InputStreamReader(System.in));




    /*if(f==0){
    try{
    sql="insert into Client_registration(usrname) values('"+uname+"')";
    flag=dbc.insert(sql);
    if(flag>0)
    System.out.println("inserted");}
    catch(SQLException e){
    e.printStackTrace();
    }*/
    buildInterface();
    //cst.connect(user_name, sname);
    //System.out.println(this.uname);

    // new MessagesThread().start();
    }

    public void buildInterface()
    {
    btnSend = new JButton("Send");
    btnExit = new JButton("Exit");
    taMessages = new JTextArea();
    taMessages.setRows(10);
    taMessages.setColumns(50);
    taMessages.setEditable(false);
    tfInput = new JTextField(50);
    JScrollPane sp = new JScrollPane(taMessages, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
    add(sp,"Center");
    JPanel bp = new JPanel( new FlowLayout());

    bp. add(tfInput);
    bp.add(btnSend);
    bp.add(btnExit);
    add(bp,"South");
    btnSend.addActionListener(this);
    btnExit.addActionListener(this);
    setSize(500,300);
    setVisible(true);
    pack();
    //Client_start cst=new Client_start();
    //cst.connect(user_name, sname);
    }


    public void actionPerformed(ActionEvent evt)
    {
    String line=null;
    String data=null;
    if ( evt.getSource() == btnExit )
    {
    String msg1="end";
    //buffer1=ByteBuffer.wrap(new String(msg1).getBytes());
    //pw.println("end"); // send end to server so that server know about the termination

    System.exit(0);
    } else
    {
    // send message to server
    // pw.println(tfInput.getText());
    // System.out.println("code here");
    //System.out.println(tfInput.getText());
    line=tfInput.getText();
    String incoming=null;

    try
    {

    // cst.send_mesg(line);
    // incoming=cst.read_mesg();
    //
    taMessages.append("server:"+data+ "\n");

    }

    catch (Exception ex)
    {
    Logger.getLogger(ChatClient.class.getName()).log(Level.SEVERE, null, ex);
    }
    tfInput.setText("");

    }
    }




    public static void main(String[] args) {


    {
    String name=null;
    // take username from user
    do{
    name = JOptionPane.showInputDialog(null,"Enter your name :", "Username",JOptionPane.PLAIN_MESSAGE);
    if(name.equals(""))

    JOptionPane.showMessageDialog(null, "username already exists");
    } while(name.equals(""));
    String servername = "localhost";

    try
    {
    new ChatClient( name ,servername);
    } catch(Exception ex)
    {
    ex.printStackTrace();
    }

    }

    }
    }
     
    getmeappu, Apr 16, 2012
    #1
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