import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.sql.*;
import java.util.*;
public class NetSend extends JFrame implements ActionListener
{
JComboBox list = new JComboBox();
JTextField message = new JTextField(20);
JButton send = new JButton("Send");
JTextField result = new JTextField(25);
private static Connection cn = null;
private static Statement st= null;
private ResultSet r= null;
public NetSend(String title){
setTitle(title);
initialise();
Container c = getContentPane();
c.setLayout(new FlowLayout(FlowLayout.CENTER));
c.add(list);
c.add(message);
send.addActionListener(this);
send.setMnemonic(KeyEvent.VK_S);
c.add(send);
result.setEditable(false);
result.setBackground(Color.yellow);
result.setForeground(Color.red);
c.add(result);
}
public void actionPerformed(ActionEvent ae){
if(ae.getSource()==send){
String dest = String.valueOf(list.getSelectedItem());
String msg = message.getText();
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
cn = DriverManager.getConnection("jdbc:odbc:netsend","mcp","mcp");
st=cn.createStatement();
ResultSet r=st.executeQuery("xp_cmdshell 'net send "+dest+" "+msg+"'");
result.setText("Message Sent");
}catch(Exception e){result.setText("Error in Sending Message");}
}
}
public void initialise(){
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
cn = DriverManager.getConnection("jdbc:odbc:netsend","mcp","mcp");
st=cn.createStatement();
r=st.executeQuery("xp_cmdshell 'net view'");
String temp = new String();
int i = 1;
ArrayList machNames = new ArrayList();
while(r.next())
{
machNames.add(r.getString("output"));
}
for(int x=3;x<machNames.size()-3;x++){
temp = String.valueOf(machNames.get(x));
list.addItem(temp.substring(2,temp.length()));
}
result.setText("Type your message and press ALT and S");
}
catch(Exception e){result.setText("Not able to retrieve the hosts");}
}
public static void main(String args[])
{
NetSend ns = new NetSend("Send your messages to PC's in LAN");
ns.setVisible(true);
ns.setSize(400,400);
}
}
