0IP_Entry.java

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package cdvirtualclient;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.net.*;
/**
 *
 * @author Chayan-Dhaddha
 */
public class IP_Entry extends JFrame implements ActionListener {
    JLabel lbl_ip;
    JTextField txt_ip;
    JButton btn_connect;
    LoginWindow win;
    
    public IP_Entry(){ 
        this.setLayout(null);
        this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
        lbl_ip=new JLabel("Enter server IP :");
        txt_ip=new JTextField("127.0.0.1");
        btn_connect=new JButton("connect");
        this.design();
        this.btn_connect.addActionListener(this);
        this.addWindowListener(new WindowAdapter(){
                                    public void windowClosing(WindowEvent e) {
                                      
                                        if(JOptionPane.showConfirmDialog(IP_Entry.this,"Do you want to exit??","Confirmation",JOptionPane.YES_NO_OPTION)==JOptionPane.YES_OPTION){
                                              System.exit(0);
                                        }
                                    }
                               });
    }
    
    void design(){
        setPosition(lbl_ip,30,30,100,20);
        setPosition(txt_ip,130,30,100,20);
        setPosition(btn_connect,90,70,80,20);
    }
    
    void setPosition(Component C,int x,int y,int w,int h){
        this.add(C);
        C.setBounds(x,y,w,h);
    }
    
    public void actionPerformed(ActionEvent ae){
       if(this.txt_ip.getText().trim().equals("")){
           JOptionPane.showMessageDialog(null, "No IP entry provided","IP ENTRY",JOptionPane.ERROR_MESSAGE);  
           return; 
       }
       try{
           if(ae.getSource()==btn_connect) {
               InetAddress inet=InetAddress.getByName(this.txt_ip.getText().trim());
               CommResource.client=new Socket(inet,2234);
               JOptionPane.showMessageDialog(this,"Successfully Connected...","IP Entry",JOptionPane.INFORMATION_MESSAGE);
               win=new LoginWindow();
               this.dispose();
           }
       }catch(Exception ex){
           JOptionPane.showMessageDialog(this,"Cannot Connect to Server","IP ENTRY",JOptionPane.ERROR_MESSAGE);
       }
   }
}