Hanoi Tower Help

import java.io.*;
import java.util.*;
public class HanoiTower
{
	BufferedReader keyboard = new BufferedReader(new InputStreamReader(System.in));
	public static void main (String[] args)throws IOException
	{
		HanoiTower HoT = new HanoiTower();
		HoT.Tower1();
	}
		
	private void Tower1()throws IOException
	{
		int UserNum;
		ArrayList<String>Peg1 = new ArrayList();
		ArrayList<String>Peg2 = new ArrayList();
		ArrayList<String>Peg3 = new ArrayList();
		String Sides = "", Spaces = "", empty = "", Input;

		System.out.print("Please enter a disk#: ");
		UserNum = Integer.parseInt(Input = keyboard.readLine().trim());
		if(UserNum < 1 || UserNum > 10)
		System.exit(0);
		
		for(int a = 1; a <= UserNum; a++)
		Spaces+=" ";
		empty = (Spaces+"|"+Spaces);
		for(int a = 1; a <= 10; a++)
		{
			Peg1.add(empty);
			Peg2.add(empty);
			Peg3.add(empty);
		}
		for(int a = 1; a <= UserNum; a++)
		{
			Spaces="";
			for(int b = a; b <= a; b++)
				Sides+="*";
			for(int c = (UserNum-a); c > 0; c--)
				Spaces+=" ";
				Peg1.remove(UserNum - a);
				Peg1.add(Spaces+Sides+a+Sides+Spaces);
		}
		/*Prints Tower1*/
		System.out.println("\n\nInitial Start:");
		for(int x = 0; x < 10; x++)
			System.out.print(Peg1.get(x)+" "+Peg2.get(x)+" "+Peg3.get(x)+"\n");
			System.out.println("\n\nStatus: Move #8");
		/*Prints Tower2*/
		Tower2((10-UserNum), empty, Peg1, Peg2, Peg3);
		for(int x = 0; x < 10; x++)
			System.out.print(Peg1.get(x)+" "+Peg2.get(x)+" "+Peg3.get(x)+"\n");
			System.out.println("\n\nFinal Status:");
		/*Prints Tower3*/	
		Tower3((10-UserNum), empty, Peg1, Peg2, Peg3);
		for(int x = 0; x < 10; x++)
			System.out.print(Peg1.get(x)+" "+Peg2.get(x)+" "+Peg3.get(x)+"\n");
	}
	/*Function for Tower2*/
	public static void Tower2(int x, String Space, ArrayList Peg1, ArrayList Peg2, ArrayList Peg3)
	{
		Object Temp = Peg1.get(x);
		Peg1.remove(x);
		Peg1.add(x, Space);
		Peg3.remove(9);
		Peg3.add(0, Temp);
	}
	/*Function for Tower3*/
	public static void Tower3(int x, String Space, ArrayList Peg1, ArrayList Peg2, ArrayList Peg3)
	{
		Object Temp = Peg1.get(x);
		Peg1.remove(x);
		Peg1.add(x, Space);
		Peg3.remove(9);
		Peg3.add(0, Temp);
	}
}