import java.net.ServerSocket;
public class LocalScan {
public static void main(String[] args) {
for (int i = 1; i < 1023; i++) {
testPort(i);
}
System.out.println("Completed");
}
private static void testPort(int i) {
try {
ServerSocket sock = new ServerSocket(i);
} catch (java.io.IOException e) {
System.out.println("Port " + i + " in use.");
}
}
}