Java - Tiempo limite en lectura de datos

system.out.println("ingrese 1 para continuar, si no ingresa nada despues de 1 seg, el programa acabara");

Dato=x.next(); // aca, si despues de 1 seg no escribe nada, se acabe el programa.

import java.util.Scanner;

class Main{

public static void Main(){

Scanner scan=new Scanner(System.in);

int segActual = (int) System.currenTimeMillis();

int delay = 6000; //6 segundos

while((int)System.currenTimeMillis() <= (segActual + delay)){

//pides tus datos

System.out.println("Ingresa ....");

String dato = scan.nextLine();

System.out.println("El dato es: "+ dato);

}

System.exit(0); //salgo del programa

}

}

package com.zensei;

import java.util.Scanner;

public class Main {

    private static Scanner scanner;

    private static Thread scannerThread = new Thread() {

        public void run() {

            scanner = new Scanner(System.in);

            System.out.println("Ingresa ....");

            String dato = scanner.nextLine();

            System.out.println("El dato es: " + dato);

        }

    };

    public static void main(String [] args) throws InterruptedException {

        scannerThread.start();

        long segActual = System.currentTimeMillis();

        int delay = 6000;

        while(System.currentTimeMillis() <= (segActual + delay)) {

//             System.out.println("Corriendo...");

        }

        System.out.println("Saliendo del programa");

        System.exit(0); //salgo del programa

    }

}

public class TimedReads {

	/* */

	public String read(int threshold) throws IOException, InterruptedException {

		long tref = System.currentTimeMillis();

		while(System.in.available() < 1) {

			if((tref + threshold) < System.currentTimeMillis()) {

				return null; // TODO Throw some exception ...

			}

			Thread.sleep(10L);

		}

		return new BufferedReader(new InputStreamReader(System.in)).readLine();

	}

	/* */

	public static void main(String args[]) throws IOException, InterruptedException {

		System.out.println(new TimedReads().read(5000));

	}

}