How can I display the IP address of current MySql connections connected?

Something like this will work?

Process p = Runtime.getRuntime().exec netstat;
System.out.println(p);

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Check out http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html

and the help for netstat on your platform

Tested but It is not showing the IPs.

import javax.swing.*;
 
public class NewClass
{
    public static void main(String args[])
    {
       
try
{
 
//Runtime.getRuntime().exec("netstat");
Process p = Runtime.getRuntime().exec("netstat");
JOptionPane.showMessageDialog(null, p);
//System.out.println(p);
}
catch(Exception e) {
System.out.println("Error creating the FileInfo panel: " +
e);
e.printStackTrace();
}
}
}

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You won't get the right output like that. Look at the command and its options and how to capture its output stream which is covered at the link i posted

I also need to run continuous beep() if there is access to MySql.

:-)