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  1. import java.io.BufferedReader;
  2. import java.io.File;
  3. import java.io.IOException;
  4. import java.io.InputStreamReader;
  5. import java.io.PrintStream;
  6. import java.net.Socket;
  7. import java.util.ArrayList;
  8. import java.util.Scanner;
  9.  
  10. class Server {
  11. 	public static ArrayList<ArrayList<Object>> connectedServers = new ArrayList<ArrayList<Object>>();
  12.  
  13. 	public static void main(String[] args) throws IOException {
  14. 		String host = takeInput("Host");
  15. 		int port = takeInputInt("Port");
  16.  
  17. 		Socket a = connectToServer(host, port);
  18. 		}
  19.  
  20. 	public static String takeInput(String inputName) throws IOException {
  21. 		System.out.print(inputName+": ");
  22. 		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
  23. 		String input = br.readLine();
  24. 		return input;
  25. 	}
  26.  
  27. 	public static int takeInputInt(String inputName) throws IOException {
  28. 		System.out.print(inputName+": ");
  29. 		int input = 0;
  30.  
  31. 		Scanner inputInt = new Scanner(System.in);
  32. 		input = inputInt.nextInt();
  33. 		return input;
  34. 	}
  35.  
  36. 	public static Socket connectToServer(String host, int port) throws IOException {
  37. 		ArrayList<Object> element = new ArrayList<>();
  38. 		element.add(host);
  39. 		element.add(port);
  40.  
  41. 		Socket fellowServer = null;
  42. 		if (connectedServers.contains(element) != true) {
  43. 			fellowServer = new Socket(host, port);
  44. 			connectedServers.add(element);
  45. 			element.remove(host);
  46. 			element.remove(0);
  47. 			return fellowServer;
  48. 		}
  49. 		else{
  50. 			return null;
  51. 		}
  52. 	}
  53.  
  54. }
  55.  
Runtime error #stdin #stdout #stderr 0.1s 380672KB
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stdin
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Standard input is empty
stdout
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Host: Port:
stderr
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Exception in thread "main" java.util.NoSuchElementException
	at java.util.Scanner.throwFor(Scanner.java:907)
	at java.util.Scanner.next(Scanner.java:1530)
	at java.util.Scanner.nextInt(Scanner.java:2160)
	at java.util.Scanner.nextInt(Scanner.java:2119)
	at Server.takeInputInt(Main.java:32)
	at Server.main(Main.java:15)
https://ideone.com/kpXV5d
language:
Java (HotSpot 12)
created:
11 years ago
visibility:
public

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