SevenDriver.java

//provided for us
import java.util.Scanner;   
public class SevenDriver{       
  public static void main(String[] args){      
    System.out.println("Enter number of dice to toss");     
    Scanner s = new Scanner(System.in);      
    int diceCount = s.nextInt(); 
    SevenTally t = new SevenTally(diceCount);
    int experiments = 1000000;
    int wins = 0;
    for(int j = 0; j < experiments; j++)
      if(t.experiment()) wins++;
    System.out.println((double)wins/experiments);
        
  } 
}   

SevenTally.java

import java.lang.Math;
import java.util.*;
public class SevenTally{
    int diceCount;
    public SevenTally(int diceCount)
    {
	diceCount = diceCount;

    }
    public boolean experiment()
    {
	ArrayList<Die> diceList = new ArrayList<Die>(); 
	for(int i = 0;i<diceCount;i++)
	{
	    diceList.add(new Die());
	}
	int arraySize = diceList.size();
	for(Die dice : diceList)
	    {
		System.out.println(dice.getValue());
		for(Die dice2 : diceList)
		    {
			if(dice.getId()!=dice2.getId())
			    {
				System.out.println("vse");
				if(dice.getValue()+dice2.getValue() == 7)
				    {
					return true;
				    }
			    }
		    }

	    }
	return false;

    }
    private class Die{
	int value;
	double id;
	public Die()
	{
	    value = (int)(7*Math.random() +1);
	    id = Math.random();
	}
	public double getId()
	{
	    return id;
	    
	}
	public int getValue()
	{
	    return value;
	}


    }


}