Someone

import java.awt.Color;
import java.awt.Font;
import java.io.*;
import java.net.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class Connection {
	private static Socket socket = null;
	private PrintWriter out = null;
	private BufferedReader in = null;
	private static String ip = null;
	private static int port = 0;
	private static JLabel statusLabel = new JLabel("idle");

	public static void main(String[] args) throws IOException {

		statusLabel.setFont(new Font("Arial", 2, 14));
		statusLabel.setForeground(Color.red);
		statusLabel.setBounds(0, 60, 500, 20);
		statusLabel.setVisible(true);
		getConfig();
		createGUI();

	}

	public static void createGUI() {

		JFrame frame = new JFrame("ServerTest");
		frame.setLayout(null);
		JLabel portLabel = new JLabel("port = " + port);
		portLabel.setFont(new Font("Arial", 2, 14));
		portLabel.setBounds(0, 0, 500, 20);
		portLabel.setVisible(true);

		JLabel ipLabel = new JLabel("ip = " + ip);
		ipLabel.setFont(new Font("Arial", 2, 14));
		ipLabel.setBounds(0, 20, 500, 20);
		ipLabel.setVisible(true);

		JButton button = new JButton("Check");
		button.setBounds(0, 100, 80, 20);
		button.setVisible(true);
		button.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {
				Connect();

			}
		});

		frame.setVisible(true);
		frame.add(portLabel);
		frame.add(ipLabel);
		frame.add(button);
		frame.add(statusLabel);
		frame.setSize(250, 250);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

	}

	public static void Connect() {

		try {
			SocketAddress sockaddr = new InetSocketAddress(ip, port);
			socket = new Socket();
			socket.connect(sockaddr, 3000);
			setStatus(Color.green, "Online");

			socket.close();

		} catch (SocketTimeoutException e) {
			setStatus(Color.RED, "Offline");

		} catch (IOException e) {
			setStatus(Color.RED, "No Network Connection");

		} catch (IllegalArgumentException e) {

			setStatus(Color.RED, "Config invalid");

		}

	}

	public static void getConfig() {
		try {
			BufferedReader in = new BufferedReader(new FileReader("server.cfg"));
			String str;
			while ((str = in.readLine()) != null) {

				String gesplit[] = str.split("=");

				for (int i = 0; i < gesplit.length; i++) {

					if (gesplit[i].contains("ip")) {
						ip = gesplit[1];

					}

					if (gesplit[i].contains("port")) {

						port = Integer.parseInt(gesplit[1]);

					}
				}

			}
			in.close();

		} catch (ArrayIndexOutOfBoundsException e)

		{

			setStatus(Color.RED, "Error");
		}

		catch (IOException e) {
			setStatus(Color.RED, "Config not found");
		}
	}

	public static void setStatus(Color kleur, String status) {
		statusLabel.setForeground(kleur);
		statusLabel.setText(status);
	}

}