wat do

PortScanner.java

package portscanner;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;

public class PortScanner {
	public static String connect(String host, int port) {
		String output = null;
		try {
			Socket connection = new Socket(host,port);
			connection.setSoTimeout(1000);
			BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
			output = in.readLine();
			connection.close();
		} catch (UnknownHostException e) {
			output = "Unknown host: " + host;
		} catch  (IOException e) {
			output = "Closed";
		}
		return output;
	}
	public static void main(String args[]) {
		Scanner inputz = new Scanner(System.in);
		System.out.print("What host would you like to scan: ");
		String host = inputz.nextLine();
		System.out.println("Scanning ports 1-65535 on " + host);
		for(int port = 1; port < 65536; port++) {
			System.out.println("Port " + port + ":\t" + connect(host,port));
		}
	}
}