Something

import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
import java.net.*;
import java.io.*;


   	public class showname {//implements ActionListener{
	JFrame f = new JFrame();
	Container c = f.getContentPane();
	JLabel L1 = new JLabel("net:");
	JTextField T1 = new JTextField();

   	public static void main (String agr[]) throws Exception{
		showname a = new showname();
		a.createFrame();

	}

	public void createFrame() throws Exception{
		c.setLayout(null);
		L1.setBounds(20,0,50,20);
		T1.setBounds(50,0,50,20);
		c.add(L1);
		c.add(T1);
		f.setUndecorated(true);
		f.setSize(100,20);
		f.setVisible(true);
		//T1.setText(Conn.detect());
		start();
	}

   public void start() {

	String ip = "202.188.0.133";
	String pingResult = "";

	String pingCmd = "ping " + ip +" -t";

	try {
	Runtime r = Runtime.getRuntime();
	Process p = r.exec(pingCmd);

	BufferedReader in = new BufferedReader(new
	InputStreamReader(p.getInputStream()));
	String inputLine;
	while ((inputLine = in.readLine()) != null) {
		if(inputLine.indexOf("Request timed out")!=-1){
			T1.setText("down");
		}
		else
			if(inputLine.indexOf("Reply from")!=-1)
			T1.setText("up");
		}
	in.close();

	}//try
	catch (IOException e) {
	System.out.println(e);
}
	 /*  int a = 0;
	   	    try{
	   			while(a ==0 ){
	   				ConnectionDetector Conn = new ConnectionDetector();
	   				Conn.detect();
	   				T1.setText("");
	   				T1.setText(Conn.detect());

	   			 }
	   		}catch(Exception ae){
	   			ae.printStackTrace();
		}*/
	}
}