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Can anyone co-develop an app that alerts mobile phone users when in close proximity min 6 feet near another mobile phone user?

Hello everyone, I have just discovered this amazing community. I am wondering if you guys could help provide me with beneficial programming tips or suggestions. I love to code and I am wondering if there are important skills I should obtain or learn about. It would be amazing to see if you guys have any programming tutorials/books/etc... that can be helpful to learn from. I am fairly decent at coding. My older project I worked on was an app on the IOS App Store (took me about 8 months to create), but I now want to learn about creating good-quality code and being able to understand other's code clearly. I currently aspire to become a software engineer one day.

/** * Created by blueghosties on 31/03/16. * this is a simple port scanner that I wrote. * Nothing spectacular, just does what it's suppose to * do. * When it hits an open port, it logs time, date, * IP and port. * I was going to implement ability to jump across * a range of different IP addresses, then * decided against it as it would raise flags. * Thinking about introducing randomised time * between scans as that would lessen the * suspicion of the scan. * * OK...so I implemented the random timing, so shoot me. * You like...no? (said in an outrageous French accent) * * This has been tested and run on Mac OS X * el Capitain, Sierra, Windows 10 and the intel Edison. * Yes, it runs on that awesome, little board. * * I am not responsible for any misuse by others * from running this program or damage that * may be caused by it. You're on your own. * * Enjoy. */ import java.io.*; import java.net.InetSocketAddress; import java.net.Socket; import java.util.Date; import java.util.Random; import java.util.Scanner; public class PortScanner // Super secret code name clPortPoke { public static void main(String []args) throws IOException { int starting_port, ending_port, rand_delay; // BufferedReader s_in = null; // Time to get some....input Scanner input = new Scanner (System.in); System.out.println("ᦐ Blue Ghosties' Simple Java Port Scanner ᦐ"); System.out.println("--------------------------------------------"); System.out.println("Enter in IP ADDRESS: "); String ip_add = input.next(); System.out.println("Enter in starting port: "); starting_port = input.nextInt(); System.out.println("Enter in an ending port (65535 is your limit): "); ending_port = input.nextInt(); System.out.println("Did you want to randomise scanning delay? y/n "); String delay_it = input.next(); String delay_ans; Random randomGenerator = new Random(); // using a delay range....muhahahaha....EVILLE!!! rand_delay = randomGenerator.nextInt(666); if(delay_it.equals("y")) { System.out.println("Delay starting at: " + rand_delay); delay_ans = "yes"; } else { System.out.println("Full throttle...perfect. Vroom vroom!!!"); rand_delay = 0; delay_ans = "no"; } System.out.println("Delay starting at: " + rand_delay); System.out.println("Now checking: " + ip_add); System.out.println("----------------------------------------"); // log file will be written wherever the app is located File file = new File("java_hits.txt"); // You can scan to port 65535 for (int port = starting_port; port <= ending_port; port++) { if(rand_delay > 0) { // Take a random nap...program has narcolepsy // Making sure rand_delay isn't 0 // Trying to mask scan with erratic signal rand_delay = randomGenerator.nextInt(666); rand_delay = rand_delay + 1; System.out.println("Delay set at: " + rand_delay); } else { rand_delay = 0; } try { Thread.sleep(rand_delay); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println("IP -> " + ip_add + " Port: " + port); try { if(!file.exists()) { file.createNewFile(); } else { // instantiate new socket object Socket socket; socket = new Socket(); socket.connect(new InetSocketAddress(ip_add, port), 100); // s_in = new BufferedReader(new InputStreamReader(socket.getInputStream())); // Need to make sure we log any hits with time, date and ports. FileWriter fileWriter = new FileWriter(file, true); Date now = new Date(); // All output to file is below System.out.println("IP -> * " + ip_add + " Port " + port + " is open *"); // System.out.println("Server responded: " + response); String str_start_port = String.valueOf(starting_port); String str_ending_port = String.valueOf(ending_port); String bline = "--------------------------------------------------------------------------\r\n"; String strPort = "ᦐ Scanning ports between " + str_start_port + " and " + str_ending_port + " ᦐ\r\n"; String data = "--> IP Address: " + ip_add + " Port: " + port + " is open. " + now + " <--\r\n"; String delay_set = "--> Was random delay set for the scan? <-- " + delay_ans + "\r\n"; // IF we hit something...log it! fileWriter.write(strPort); fileWriter.write(data); fileWriter.write(delay_set); //fileWriter.write(server_response); fileWriter.write(bline); // These pipes are clean! Close the connection. fileWriter.flush(); fileWriter.close(); socket.close(); } } catch (IOException ex) { //ex.printStackTrace(); } } System.out.println("We're finished."); } }

I'm doing a custom build with long instructions and it says copy a certain batch file and paste it into the start menu. But it's not working. It's not like with Windows 7 where you can just drag and drop. I'm not sure where the start menu folder is. Can anybody help me here? What is the location of the start menu folder in Windows 10?