Ping

package mouamle.ping.ui;

import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.InputStreamReader;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.ScrollPaneConstants;

public class MainUI implements Runnable{

    private JFrame frame;
    private JTextField IP;
    private JTextArea Res;
    private String commnandx = "";


    Thread t = new Thread(this);

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    MainUI window = new MainUI();
                    window.frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    public MainUI() {
        initialize();
    }

    public void runSystemCommand(String command) {
        try {
            Process p = Runtime.getRuntime().exec(command);
            BufferedReader inputStream = new BufferedReader(
                    new InputStreamReader(p.getInputStream()));

            String s = "";
            // reading output stream of the command
            while ((s = inputStream.readLine()) != null) {
                Res.append(s + "\n");
            }

        } catch (Exception e) {

        }
    }

    private void initialize() {
        frame = new JFrame();
        frame.setBounds(100, 100, 450, 300);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().setLayout(null);

        JButton Ping = new JButton("ping");
        Ping.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                commnandx = "ping " + IP.getText() + " -t";
                t.start();
            }
        });
        Ping.setBounds(335, 11, 89, 23);
        frame.getContentPane().add(Ping);

        IP = new JTextField();
        IP.setBounds(10, 12, 315, 22);
        frame.getContentPane().add(IP);
        IP.setColumns(10);

        JScrollPane scrollPane = new JScrollPane();
        scrollPane
                .setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
        scrollPane.setBounds(10, 45, 414, 205);
        frame.getContentPane().add(scrollPane);

        Res = new JTextArea();
        scrollPane.setViewportView(Res);
    }

    @Override
    public void run() {
        runSystemCommand(commnandx);
    }


}