port checking in java nothing fancy

PortCheck.java

import java.net.Socket;

public class PortCheck {

    int port = -1;

    public void info(String s) {
        System.out.println("INFO: " + s);
    }
    public void err(String s) {
        System.out.println("ERR: " + s);
    }

    public void checkPortAvailable(String server, int port) {
        info("testing port " + server + " " + port);
        Socket s = null;
        try {
            s = new Socket(server, port);
        } catch(Exception e) {
            err("1 " + e.getMessage());
        } finally {
            if (s!=null) {
                try {
                    s.close();
                } catch(Exception e) {
                    err("2 " + e.getMessage());
                }
            }
        }
    }

    public void parseargs(String[] args) {
        for(int i=0;i<args.length;i++) {
            if ("-p".equals(args[i])) {
                port = Integer.parseInt(args[++i]);
            }
        }
    }

    public void announce() { }
    public void finish() { }

    public void run() {
        announce();
        checkPortAvailable("localhost", port);
        checkPortAvailable("127.0.0.1", port);
        finish();
    }

    public static void main(String[] args) {
        PortCheck pc = new PortCheck();
        pc.parseargs(args);
        pc.run();
    }

}